C08G 59/4021
Ureas
Official title: {Ureas; Thioureas; Guanidines; Dicyandiamides}
C08G59/4021 (Ureas) appears on 337 US grants and 456 published applications in this corpus.
Search patents in C08G- Granted patents
- 337
- Published applications
- 456
- Assignees
- 214
- Inventors
- 1,115
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 1 |
| 2003 | 2 | 8 |
| 2004 | 2 | 8 |
| 2005 | 2 | 4 |
| 2006 | 8 | 5 |
| 2007 | 0 | 5 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 2 | 8 |
| 2011 | 3 | 20 |
| 2012 | 4 | 16 |
| 2013 | 8 | 16 |
| 2014 | 5 | 15 |
| 2015 | 10 | 12 |
| 2016 | 18 | 17 |
| 2017 | 6 | 14 |
| 2018 | 15 | 28 |
| 2019 | 19 | 28 |
| 2020 | 19 | 32 |
| 2021 | 18 | 49 |
| 2022 | 25 | 41 |
| 2023 | 23 | 33 |
| 2024 | 21 | 36 |
| 2025 | 18 | 28 |
| 2026 | 16 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- One component polymerizable composition for trickle impregnation1 Sep 2026US 12,723,129 B2Huntsman Advanced Materials (Switzerland) GmbH
- Epoxy curing agents and uses thereof25 Aug 2026US 12,715,957 B2Evonik Operations GmbH
- Composition2 Jun 2026US 12,644,031 B2Kansai Helios Austria GmbH
- Coating compositions26 May 2026US 12,637,538 B2PPG Industries Ohio, Inc.
- Epoxy resin composition, prepreg, and fiber-reinforced composite material19 May 2026US 12,630,708 B2Toray Industries, Inc.
- Heat-curing epoxy resin composition having high storage stability24 Sep 2026US 2026/0286200 A1Sika Technology AG
- One component composition based on epoxy resins10 Sep 2026US 2026/0265592 A1Henkel AG & Co. KGaA
- Coupling agents27 Aug 2026US 2026/0250435 A1Lubrizol Advanced Materials, Inc.
- Curable Resin Composition and Adhesive Composition27 Aug 2026US 2026/0250504 A1Kuk Do Chemical Co., Ltd.
- Epoxy resin composition and method of production of same20 Aug 2026US 2026/0242590 A1Nippon Steel Corporation
Most cited
By later US patents
- Heat-curable, thermally expandable moulded park127US 6,573,309 B1Henkel-Teroson GmbH · 2003
- Activatable material115US 6,846,559 B2L&L Products, Inc. · 2005
- Co-curing agents for epoxy resins42US 4,268,656 ANational Starch and Chemical Corporation · 1981
- Curable composition40US 4,360,649 ASumitomo Chemical Company, Limited · 1982
- Porous surface for laboratory apparatus and laboratory apparatus having said surface36US 5,989,692 ACytonix Corporation · 1999