The patent has been granted The patent has been granted, Grant of patent is intended, Examination is in progress, Request for examination was made, The international publication has been made, unknown EP Register Verified

TWO COMPONENT POLYURETHANE SYSTEM FOR LIQUID APPLIED SOUND DEADENER

Publication No. EP3873958

•

App No. EP19809263

•

Filed by H.B. Fuller Company

•

Filed on 2019-10-31

•

Issued/Published on 2025-12-03

Official EPO Register

Publication No. EP3873958 A1

Application No. EP19809263 Filed: 2019-10-31

Grant Date 2025-12-03 Mention of grant

Active Oppositions 1 Active EPO Oppositions

Patent Abstract / Summary

Patent abstract is being processed or was not provided in English by the publishing office.

IPC Classifications

C08G18/32, C08G18/36, C08G18/48, C08G18/66, C08G18/76, C09D175/08

Priority Claims

US 201862753590P Date: 2018-10-31

Designated Contracting States (38 EPC States)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Parties & Representation

Applicants

H.B. Fuller Company

1200 Willow Lake Boulevard P.O. Box 64683, St. Paul, Minnesota 55164-0683

Inventors (2)

WITTWEB, Wolfgang

Hanauer Strasse 47, 66953 Pirmasens

BACKES, Timo

Steinkauler Weg 6, 66839 Schmelz

Representatives / Agents

Maiwald GmbH

Elisenhof, Elisenstraße 3

Hansen, Norbert

Maiwald Patentanwalts- und, Rechtsanwaltsgesellschaft mbH

Keller Schneider Patent- und Markenanwälte AG

Monbijoustrasse 68, Postfach

Key Procedural Dates

Request-For-Examination 2021-04-29

Mention Of Grant Published 2025-12-03

First-Examination-Report-Despatched 2023-05-26

Legal Status & Event History

Official European Patent Office legal and procedural status changes recorded for this file.

46 Events Recorded

Date	Code	Event Description	Auth
2020-05-09	STAA	INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT	EP
2019-12-04	STAA	INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT	EP
2021-08-06	PUAI	PUBLIC REFERENCE MADE UNDER ARTICLE 153(3) EPC TO A PUBLISHED INTERNATIONAL APPLICATION THAT HAS ENTERED THE EUROPEAN PHASE	EP
2021-08-06	STAA	INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT	EP
2021-09-08	17P	REQUEST FOR EXAMINATION FILED	EP
2021-09-08	AK	DESIGNATED CONTRACTING STATES	EP
2022-02-09	DAX	REQUEST FOR EXTENSION OF THE EUROPEAN PATENT (DELETED)	EP
2022-02-09	DAV	REQUEST FOR VALIDATION OF THE EUROPEAN PATENT (DELETED)	EP
2023-05-26	STAA	INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT	EP
2023-06-28	17Q	FIRST EXAMINATION REPORT DESPATCHED	EP
2024-09-10	GRAP	DESPATCH OF COMMUNICATION OF INTENTION TO GRANT A PATENT	EP
2024-09-10	STAA	INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT	EP
2024-10-16	INTG	INTENTION TO GRANT ANNOUNCED	EP
2024-12-20	GRAS	GRANT FEE PAID	EP
2024-12-21	TPAC	OBSERVATIONS FILED BY THIRD PARTIES	EP
2025-01-08	GRAJ	INFORMATION RELATED TO DISAPPROVAL OF COMMUNICATION OF INTENTION TO GRANT BY THE APPLICANT OR RESUMPTION OF EXAMINATION PROCEEDINGS BY THE EPO DELETED	EP
2025-01-08	GRAL	INFORMATION RELATED TO PAYMENT OF FEE FOR PUBLISHING/PRINTING DELETED	EP
2025-01-08	STAA	INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT	EP
2025-01-08	GRAP	DESPATCH OF COMMUNICATION OF INTENTION TO GRANT A PATENT	EP
2025-02-12	INTC	INTENTION TO GRANT ANNOUNCED (DELETED)	EP
2025-07-11	GRAS	GRANT FEE PAID	EP
2025-07-11	STAA	INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT	EP
2025-07-15	GRAP	DESPATCH OF COMMUNICATION OF INTENTION TO GRANT A PATENT	EP
2025-08-13	INTG	INTENTION TO GRANT ANNOUNCED	EP
2025-10-31	GRAA	(EXPECTED) GRANT	EP
2025-10-31	STAA	INFORMATION ON THE STATUS OF AN EP PATENT APPLICATION OR GRANTED EP PATENT	EP
2025-11-06	TPAC	OBSERVATIONS FILED BY THIRD PARTIES	EP
2025-12-03	AK	DESIGNATED CONTRACTING STATES	EP
2025-12-03	REG	REFERENCE TO A NATIONAL CODE	EP
2025-12-18	REG	REFERENCE TO A NATIONAL CODE	EP
2025-12-31	REG	REFERENCE TO A NATIONAL CODE	EP
2026-01-21	U01	REQUEST FOR UNITARY EFFECT FILED	EP
2026-01-21	U07	UNITARY EFFECT REGISTERED	EP
2026-01-28	REG	REFERENCE TO A NATIONAL CODE	EP
2026-04-10	PG25	LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2026-04-13	PG25	LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2026-04-14	PG25	LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2026-04-17	PG25	LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2026-07-03	PG25	LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2026-07-18	PG25	LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2026-07-21	PG25	LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2026-07-25	PG25	LAPSED IN A CONTRACTING STATE [ANNOUNCED VIA POSTGRANT INFORMATION FROM NATIONAL OFFICE TO EPO]	EP
2026-09-04	PLBI	OPPOSITION FILED	EP
2026-09-09	REG	REFERENCE TO A NATIONAL CODE	EP
2026-09-17	PLAX	NOTICE OF OPPOSITION AND REQUEST TO FILE OBSERVATION + TIME LIMIT SENT	EP
2026-10-07	26	OPPOSITION FILED	EP

Patent & Non-Patent Citations

Cited documents and prior art referenced in search and examination reports.

24 Citations

Cited Patent Documents

EP2009036 2008-12-31

Espacenet

WO9955783 1999-11-04

Espacenet

JPS57102917 1982-06-26

Espacenet

US2002007037 2002-01-17

Espacenet

JPH0251572 1990-02-21

Espacenet

DE19818892 1999-11-04

Espacenet

EP2626854 2015-07-22

Espacenet

US2016002495 2016-01-07

Espacenet

US2014290527 2014-10-02

Espacenet

Non-Patent Scientific Literature (NPL)

- ANONYMOUS: "SikaFloor Marine PU-Red Visco-elastic damping compound ", SIKA, 1 January 2005 (2005-01-01), pages 1 - 2, XP093239504

- ANONYMOUS /: "IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND OF THE COMPANY/UNDERTAKING", SIKA SAFETY DATA SHEET, 22 December 2008 (2008-12-22), pages 1 - 6, XP093239481

- ANONYMOUS /: "IDENTIFICATION OF THE SUBSTANCE/PREPARATION AND OF THE COMPANY/UNDERTAKING ", SIKA SAFETY DATA SHEET, 16 May 2000 (2000-05-16), pages 1 - 5, XP093239496

- BROOKFIELD: "MORE SOLUTIONS TO STICKY PROBLEMS A Guide to Getting More From Your Brookfield Viscometer", 1 December 2005 (2005-12-01), pages 1 - 55, XP055064554, Retrieved from the Internet <URL:http://www.brookfieldengineering.com/download/files/more_solutions.pdf>

- ANONYMOUS: "Loi de mélange pour la viscosité — Wikipédia", WIKIPEDIA, WIKIPEDIA, 22 August 2020 (2020-08-22), pages 1 - 4, XP093433876, Retrieved from the Internet <URL:https://fr.wikipedia.org/w/index.php?title=Loi_de_mélange_pour_la_viscosité&oldid=174035969>

- D3 - Testimony of Marcel Ras with attachments D3A, D3B and D3C (28 October 2025)

- D4 - Testimony by Marko Vidovic (13 December 2024)

- TOKI SANGYO: "Model b Viscometer", HTTP://WWW.SINJUNG.CO.KR, TOKI SANGYO, 10 September 2026 (2026-09-10), pages 1 - 6, XP093433882, Retrieved from the Internet <URL:http://www.sinjung.co.kr/product/jd/B.pdf>

- BROOKFIELD AMETEK: "DV2Plus Viscometer - The Global Standard in Viscosity Control", HTTPS://WWW.BROOKFIELDENGINEERING.COM, BROOKFIELD AMETEK, 1 June 2025 (2025-06-01), pages 1 - 2, XP093433887, Retrieved from the Internet <URL:https://www.brookfieldengineering.com/products/viscometers/laboratory-viscometers/-/media/252ef28da7804c99aff803144d8b0f2a.ashx?la=en&revision=33d82159-cff2-4c49-8d38-d11cea76c6fc>

- "An Introduction to Rheology, 1. Auflage", 1 January 1989, ELSEVIER SCIENCE PUBLISHERS B.V., ELSEVIER, ISBN: 0-444-87140-3, article "Table of contents", XP009568743

- HASEEBUDDIN SYED, RAJU K V S N, KRISHNA D, REDDY P J, YASEEN M: "Temperature Dependence of Viscosity of Polyurethane Polyol Solutions: Application of Rheological Models", JOURNAL OF APPLIED POLYMER SCIENCE, vol. 59, no. 1, 3 January 1996 (1996-01-03), US, pages 29 - 36, XP093433898, ISSN: 0021-8995, DOI: 10.1002/(SICI)1097-4628(19960103)59:1 29::AID-APP5 3.0.CO;2-O

- KATSAROS GEORGE, TSOUKALA MAGDALINI, GIANNOGLOU MARIANNA, TAOUKIS PETROS: "Effect of storage on the rheological and viscoelastic properties of mayonnaise emulsions of different oil droplet size", HELIYON, vol. 6, no. 12, 1 December 2020 (2020-12-01), GB , pages e05788, XP093214674, ISSN: 2405-8440, DOI: 10.1016/j.heliyon.2020.e05788

- MILANI JAFAR MOHAMMADZADEH, NAGHAVI ENAYAT‐ALLAH, GOLKAR ABDOLKHALEGH, KHOSRAVI TANDIS: "Rheological behavior of different phases of grape molasses after storage: Effect of concentration and temperature", JOURNAL OF FOOD PROCESSING AND PRESERVATION, vol. 43, no. 8, 1 August 2019 (2019-08-01), US, pages 1 - 10, XP093433901, ISSN: 0145-8892, DOI: 10.1111/jfpp.14013

- MACKEY K. L., MORGAN R. G., STEFFE J. F.: "EFFECTS OF SHEAR‐THINNING BEHAVIOR ON MIXER VISCOMETRY TECHNIQUES", JOURNAL OF TEXTURE STUDIES, vol. 18, no. 3, 1 January 1987 (1987-01-01), US, pages 231 - 240, XP093433906, ISSN: 0022-4901, DOI: 10.1111/j.1745-4603.1987.tb00900.x

- IR ABDELRAZIQ, TH NIERAT: "Rheology Properties of Castor Oil: Temperature and Shear Rate-dependence of Castor Oil Shear Stress", JOURNAL OF MATERIAL SCIENCE & ENGINEERING, vol. 05, no. 01, 15 December 2015 (2015-12-15), pages 1 - 6, XP093433910, ISSN: 2169-0022, DOI: 10.4172/2169-0022.1000220

Worldwide Patent Family

Related applications and patents in the same INPADOC worldwide family.

14 Family Members

Country	Publication Number	Kind	Publication Date	Action
EP	EP3873958A1	A1	2021-09-08	Espacenet
EP	EP3873958B1	B1	2025-12-03	Espacenet
EP	EP3873958C0	C0	2025-12-03	Espacenet
CN	CN112969735A	A	2021-06-15	Espacenet
CN	CN112969735B	B	2023-03-10	Espacenet
JP	JP2022509543A	A	2022-01-20	Espacenet
JP	JP7391101B2	B2	2023-12-04	Espacenet
KR	KR20210086642A	A	2021-07-08	Espacenet
KR	KR102926165B1	B1	2026-02-10	Espacenet
PL	PL3873958T3	T3	2026-02-23	Espacenet
US	US2022186069A1	A1	2022-06-16	Espacenet
US	US12312513B2	B2	2025-05-27	Espacenet
WO	WO2020092800A1	A1	2020-05-07	Espacenet
WO	WO2020092800A8	A8	2020-07-16	Espacenet

Official File Inspection EPC Art. 128 Public Dossier

Complete European Patent Register Dossier (148 Total Documents)

The full inspection file for Application EP19809263 contains 148 total documents, including all notices of opposition, proprietor counter-statements, examination communications, third-party observations, and procedural forms. Below are all major recorded procedural filings and publication specifications.

Open 148-Doc Register Dossier

Dossier Filing

Date: 2025-11-06 Procedure: Examination EPIDOSNTIPA

Inspect on Register

TWO COMPONENT POLYURETHANE SYSTEM FOR LIQUID APPLIED SOUND DEADENER

Patent Abstract / Summary

IPC Classifications

Priority Claims

Designated Contracting States (38 EPC States)

Parties & Representation

Applicants

Inventors (2)

Representatives / Agents

Key Procedural Dates

Patent Oppositions

Sika Technology AG

Legal Status & Event History

Patent & Non-Patent Citations

Cited Patent Documents

Non-Patent Scientific Literature (NPL)

Worldwide Patent Family

Complete European Patent Register Dossier (148 Total Documents)

Recorded Filings & Patent Specifications

European Patent Specification - Granted Patent (B1)

Official European Patent Register Full Dossier

European Patent Application with Search Report (A1)

New entry: Communication of a notice of opposition and request to file observations + time limit

Invitation to proprietor to file observations on the notice of opposition

Opposition filed

Lapse of the patent in a contracting state

Lapse of the patent in a contracting state

Lapse of the patent in a contracting state

Lapse of the patent in a contracting state

Lapse of the patent in a contracting state

New entry: Observations by third parties

Observations by a third party

(Expected) grant

New entry: Receipt of the translation of the claim(s)

New entry: Renewal fee paid

Renewal fee payment

New entry: Communication of intention to grant a patent

New entry: Payment of fee for grant

New entry: Payment of fee for publishing/printing

New entry: Reply to examination report

New entry: Despatch of examination report + time limit

Communication from the examining division

Deletion - Disapproval of the communication of intention to grant the patent by the applicant or resumption of examination proceedings by the EPO

Deletion: Payment of fee for publishing/printing

New entry: Communication of intention to grant a patent

New entry: Observations by third parties

New entry: Payment of fee for grant

New entry: Payment of fee for publishing/printing

Observations by a third party

Intention to grant the patent

DISSAPPROVAL_OF_COMMUNICATION_OF_INTENTION_TO_GRANT_PATENT

New entry: Renewal fee paid

Renewal fee payment

Intention to grant the patent

New entry: Communication of intention to grant a patent

New entry: Renewal fee paid

Renewal fee payment

New entry: Reply to examination report

New entry: Despatch of examination report + time limit

First examination report

Communication from the examining division

Change - representative

New entry: Renewal fee paid

Renewal fee payment

Change - extension states

Change: Validation states

Amendment by applicant

Amendments

New entry: Renewal fee paid

Renewal fee payment

Publication in section I.1 EP Bulletin

The date on which the examining division becomes responsible, has been established

Request for examination filed

PCT data prior to European publication

PCT data prior to European publication

PCT data prior to European publication

Change - representative

PCT data prior to European publication

Payment of national basic fee

Payment of the first designation fee