C08G 73/1021
Characterised by the catalyst used
Official title: {characterised by the catalyst used}
C08G73/1021 (Characterised by the catalyst used) appears on 63 US grants and 74 published applications in this corpus.
Search patents in C08G- Granted patents
- 63
- Published applications
- 74
- Assignees
- 55
- Inventors
- 249
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 2 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 6 |
| 2015 | 2 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 4 |
| 2018 | 1 | 4 |
| 2019 | 3 | 8 |
| 2020 | 5 | 6 |
| 2021 | 4 | 4 |
| 2022 | 4 | 12 |
| 2023 | 3 | 2 |
| 2024 | 3 | 8 |
| 2025 | 5 | 6 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water based polyimide-powder coating composition and method for manufacturing composite separator for lithium secondary battery using same29 Sep 2026US 12,749,769 B2University Industry Foundation, Yonsei University Wonju Campus
- Polyimide film for graphite sheet, manufacturing method therefor, and graphite sheet manufactured therefrom13 Jan 2026US 12,522,701 B2PI Advanced Materials Co., Ltd.
- Polyimide film for graphite sheet, manufacturing method therefor, and graphite sheet manufactured therefrom30 Dec 2025US 12,509,554 B2PI Advanced Materials Co., Ltd.
- Low-dialectric polyimide film and method for producing same16 Dec 2025US 12,497,487 B2PI Advanced Materials Co., Ltd.
- Highly adhesive and low-dialectric polyimide film and method for producing same16 Dec 2025US 12,497,488 B2PI Advanced Materials Co., Ltd.
- Polyimide film, and preparation method and use thereof20 Aug 2026US 2026/0242555 A1PetroChina Company Limited
- Processable polyimide-phthalonitrile application forms and methods thereof22 Jan 2026US 2026/0022215 A1The Boeing Company
- Polyimide precursor1 Jan 2026US 2026/0001995 A1PI Advanced Materials Co., Ltd.
- Catalyst for synthesizing polyimide and preparation method and application thereof23 Oct 2025US 2025/0325968 A1BYD Company Limited
- Resin composition, method for producing same, and cured product of resin composition4 Sep 2025US 2025/0277077 A1
Most cited
By later US patents
- Copolyetherimides and phase catalyzed method for their preparation36US 5,908,915 AGeneral Electric Company · 1999
- Preparation of N-substituted oligo-imides29US 4,225,497 ARhone-Poulenc Industries · 1980
- Method for making polyetherimides using a sodium chloride or ferric sulfate catalyst22US 3,998,840 AGeneral Electric Company · 1976
- Process for preparing polyimide resins20US 5,502,143 API Material Research Laboratory · 1996
- Process for preparing a carbon fiber reinforced composite article which utilizes a polyimide matrix17US 4,395,514 ACelanese Corporation · 1983