C08J 2379/04
Polycondensates having nitrogen-containing heterocyclic rings in the main chain
Official title: Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
C08J2379/04 (Polycondensates having nitrogen-containing heterocyclic rings in the main chain) appears on 1,853 US grants and 2,122 published applications in this corpus.
Search patents in C08J- Granted patents
- 1,853
- Published applications
- 2,122
- Assignees
- 777
- Inventors
- 4,626
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 10 | 0 |
| 1978 | 10 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 9 | 0 |
| 1982 | 15 | 0 |
| 1983 | 11 | 0 |
| 1984 | 13 | 0 |
| 1985 | 19 | 0 |
| 1986 | 32 | 0 |
| 1987 | 23 | 0 |
| 1988 | 20 | 0 |
| 1989 | 39 | 0 |
| 1990 | 53 | 0 |
| 1991 | 38 | 0 |
| 1992 | 48 | 0 |
| 1993 | 33 | 0 |
| 1994 | 30 | 0 |
| 1995 | 20 | 0 |
| 1996 | 20 | 0 |
| 1997 | 19 | 0 |
| 1998 | 13 | 0 |
| 1999 | 15 | 0 |
| 2000 | 13 | 0 |
| 2001 | 12 | 4 |
| 2002 | 18 | 18 |
| 2003 | 14 | 12 |
| 2004 | 9 | 36 |
| 2005 | 11 | 34 |
| 2006 | 17 | 39 |
| 2007 | 16 | 47 |
| 2008 | 15 | 39 |
| 2009 | 20 | 50 |
| 2010 | 30 | 65 |
| 2011 | 29 | 57 |
| 2012 | 39 | 58 |
| 2013 | 32 | 69 |
| 2014 | 37 | 60 |
| 2015 | 48 | 96 |
| 2016 | 66 | 122 |
| 2017 | 66 | 107 |
| 2018 | 79 | 143 |
| 2019 | 89 | 146 |
| 2020 | 115 | 166 |
| 2021 | 99 | 146 |
| 2022 | 94 | 160 |
| 2023 | 110 | 172 |
| 2024 | 122 | 122 |
| 2025 | 85 | 91 |
| 2026 | 59 | 63 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Synthesis of self-healing benzoxazine polymers through melt polymerization6 Oct 2026US 12,753,281 B2Kaneka Corporation
- Composite film having a functional layer and display device comprising same29 Sep 2026US 12,747,329 B2Microworks Solutions Co., Ltd.
- Method for manufacturing polyimide film with reduced gloss22 Sep 2026US 12,742,046 B2Taimide Technology Incorporation
- Curable film composition, curable film, and cured product thereof22 Sep 2026US 12,742,059 B2Thintronics, Inc.
- Toughened resin composition15 Sep 2026US 12,735,533 B2Iteq Corporation
- Polyamide-imide-based film, preparation method thereof, and cover window and display device comprising the same8 Oct 2026US 2026/0308325 A1Microworks Solutions Co., Ltd.
- Light-transmissive film, manufacturing method therefor, and display device comprising same8 Oct 2026US 2026/0308359 A1Kolon Industries, Inc.
- Polyimide film and method for producing same1 Oct 2026US 2026/0297270 A1PI Advanced Materials Co., Ltd.
- Resin composition and article made therefrom1 Oct 2026US 2026/0297327 A1Elite Material Co., Ltd.
- Composite ion-conducting membrane1 Oct 2026US 2026/0302300 A1Johnson Matthey Hydrogen Technologies Limited
Most cited
By later US patents
- Aerogel metallic compositions1,501US 7,071,287 B2Aspen Aerogels, Inc. · 2006
- Proton conducting polymers used as membranes200US 5,525,436 ACase Western Reserve University · 1996
- Coatings comprising carbon nanotubes and methods for forming same164US 7,060,241 B2Eikos, Inc. · 2006
- Composite solid polymer electrolyte membranes158US 6,248,469 B1Foster-Miller, Inc. · 2001
- Self reinforced thermoplastic composite laminate130US 5,275,877 AEdison Polymer Innovation Corporation · 1994