D21H 17/52
Epoxy resins
D21H17/52 (Epoxy resins) appears on 99 US grants and 91 published applications in this corpus.
Search patents in D21H- Granted patents
- 99
- Published applications
- 91
- Assignees
- 67
- Inventors
- 248
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 8 | 4 |
| 2003 | 3 | 3 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 2 |
| 2007 | 1 | 3 |
| 2008 | 2 | 2 |
| 2009 | 0 | 1 |
| 2010 | 2 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 4 |
| 2013 | 1 | 7 |
| 2014 | 4 | 8 |
| 2015 | 5 | 24 |
| 2016 | 19 | 5 |
| 2017 | 7 | 1 |
| 2018 | 3 | 3 |
| 2019 | 2 | 3 |
| 2020 | 4 | 0 |
| 2021 | 4 | 5 |
| 2022 | 1 | 2 |
| 2023 | 3 | 3 |
| 2024 | 1 | 2 |
| 2025 | 2 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Paper-based electromagnetic shielding composite with flame retardant properties and its preparation method and application12 Aug 2025US 12,385,186 B2Jiangnan University
- Double-crosslinked cellulose nanofiber film with high strength and high transmittance and method for manufacturing the same14 Jan 2025US 12,195,921 B2Hyundai Motor Company
- Ash retention additive and methods of using the same20 Aug 2024US 12,065,785 B2Polymer Ventures, Inc.
- Paper strength improvement using metal chelates and synthetic cationic polymers5 Dec 2023US 11,834,792 B2Kemira Oyj
- Compositions for use in impregnation of paper bushings8 Aug 2023US 11,718,706 B2Huntsman Advanced Materials Licensing (Switzerland) GmbH
- Paper supports for confectionery products and method fo preparation thereof13 Aug 2026US 2026/0234873 A1Perfetti Van Melle S.P.A.
- Absorbent material and method of providing an absorbent material17 Apr 2025US 2025/0122670 A1Neenah Gessner GmbH
- Paper material with virucidal, biocidal and barrier properties to water, fats and oils6 Mar 2025US 2025/0075431 A1Fedrigoni S.P.A.
- Recyclable paper of high wet strength13 Feb 2025US 2025/0052008 A1Billerud Aktiebolag (publ)
- Uv-curable ethylene scavenging compositions18 Apr 2024US 2024/0124669 A1Johnson Matthey Public Limited Company
Most cited
By later US patents
- Crosslinked vinyl alcohol/vinylamine copolymers for dry end paper addition68US 5,281,307 AAir Products and Chemicals, Inc. · 1994
- Sizing method and sizing composition for use therein50US 4,279,794 AHercules Incorporated · 1981
- Disposable cellulosic wiper41US 8,187,422 B2Georgia-Pacific Consumer Products LP · 2012
- Tissue having high improved cross-direction stretch30US 8,834,677 B2Kimberly-Clark Worldwide, Inc. · 2014
- Sizing method and sizing composition for use therein28US 4,295,931 AHercules Incorporated · 1981