C08G 59/4035
Hydrazines
Official title: {Hydrazines; Hydrazides}
C08G59/4035 (Hydrazines) appears on 60 US grants and 42 published applications in this corpus.
Search patents in C08G- Granted patents
- 60
- Published applications
- 42
- Assignees
- 55
- Inventors
- 190
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 0 | 4 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 2 | 3 |
| 2014 | 0 | 0 |
| 2015 | 1 | 3 |
| 2016 | 2 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 1 | 4 |
| 2021 | 3 | 8 |
| 2022 | 2 | 1 |
| 2023 | 1 | 1 |
| 2024 | 4 | 4 |
| 2025 | 1 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Recovery and reuse of acid digested amine/epoxy-based composite matrices4 Nov 2025US 12,460,063 B2University of Southern California
- Sheet-form insulating varnish and producing method therefor, electrical device, and rotary electric machine23 Jul 2024US 12,043,734 B2Mitsubishi Electric Corporation
- Or relating to curing agents26 Mar 2024US 11,939,421 B2Hexcel Composites Limited
- Thermosetting epoxy resin composition having low curing temperature and good storage stability6 Feb 2024US 11,891,507 B2Sika Technology AG
- Curatives23 Jan 2024US 11,879,052 B2Hexcel Composites Limited
- One-part curable epoxy composition5 Mar 2026US 2026/0062549 A1Henkel AG & Co. KGaA
- Epoxy resin composition27 Nov 2025US 2025/0361355 A1Mitsubishi Gas Chemical Company, Inc.
- Epoxy resin composition, cured product, encapsulant and adhesive30 Jan 2025US 2025/0034319 A1Asahi Kasei Kabushiki Kaisha
- Rubber composition, vulcanizate, and vulcanized molded object14 Nov 2024US 2024/0376244 A1Denka Company Limited
- Epoxy resin composition, prepreg, and fiber-reinforced composite material23 May 2024US 2024/0166798 A1Toray Industries, Inc.
Most cited
By later US patents
- Co-curing agents for epoxy resins42US 4,268,656 ANational Starch and Chemical Corporation · 1981
- Epoxy resins having reversible crosslinks42US 4,882,399 APolytechnic University · 1989
- Epoxy resin powder including ethylene vinyl acetate40US 4,009,224 AMinnesota Mining and Manufacturing Company · 1977
- Curable composition40US 4,360,649 ASumitomo Chemical Company, Limited · 1982
- One-pack type epoxy sealant with amine-type curing agent, for liquid crystal cell, display apparatus and recording apparatus31US 5,150,239 ACanon Kabushiki Kaisha · 1992