C08J 2479/04
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
C08J2479/04 (Polycondensates having nitrogen-containing heterocyclic rings in the main chain) appears on 242 US grants and 380 published applications in this corpus.
Search patents in C08J- Granted patents
- 242
- Published applications
- 380
- Assignees
- 195
- Inventors
- 938
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 3 | 2 |
| 2006 | 0 | 2 |
| 2007 | 1 | 1 |
| 2008 | 1 | 2 |
| 2009 | 1 | 3 |
| 2010 | 1 | 3 |
| 2011 | 3 | 6 |
| 2012 | 4 | 8 |
| 2013 | 5 | 9 |
| 2014 | 3 | 5 |
| 2015 | 3 | 15 |
| 2016 | 6 | 22 |
| 2017 | 5 | 27 |
| 2018 | 18 | 35 |
| 2019 | 24 | 22 |
| 2020 | 24 | 32 |
| 2021 | 22 | 35 |
| 2022 | 22 | 34 |
| 2023 | 25 | 39 |
| 2024 | 26 | 23 |
| 2025 | 21 | 35 |
| 2026 | 11 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Curable film composition, curable film, and cured product thereof22 Sep 2026US 12,742,059 B2Thintronics, Inc.
- Method for producing composite material2 Jun 2026US 12,643,267 B2Teijin Limited
- Method for manufacturing a new sound-absorbing and noise-reducing material by using polyimide foam scraps2 Jun 2026US 12,643,986 B2
- Additive mixtures for rheology modification of polymers7 Apr 2026US 12,595,343 B2BASF SE
- Thermoplastic resin foam, thermoplastic resin foam sheet, fiber-reinforced resin composite, method for manufacturing thermoplastic resin foam, thermoplastic resin foam molded article, method for manufacturing thermoplastic resin foam molded article, and foamed resin composite31 Mar 2026US 12,590,208 B2Sekisui Kasei Co., Ltd.
- Polyimide film, and preparation method and use thereof20 Aug 2026US 2026/0242555 A1PetroChina Company Limited
- Resin composition and uses of the same13 Aug 2026US 2026/0234399 A1Taiwan Union Technology Corporation
- Polymer matrix composites and methods for manufacturing the same6 Aug 2026US 2026/0226283 A1The Florida International University Board of Trustees
- Process for producing a single-material particle-foam component30 Jul 2026US 2026/0217926 A1Evonik Operations GmbH
- Aqueous composition for barrier coating30 Jul 2026US 2026/0217931 A1
Most cited
By later US patents
- Polypropylene film with primer of a water dispersed epoxy resin coating60US 4,214,039 AMobil Oil Corporation · 1980
- Resilient cushion52US 6,555,214 B12003
- Process for coating polymer surfaces and coated products produced using such process36US 4,980,231 ASnyder Laboratories, Inc. · 1990
- Biaxially oriented polyester film and magnetic recording medium31US 8,609,264 B2Toray Industries, Inc. · 2013
- Porous poly(aryl ether ketone) membranes, processes for their preparation and use thereof27US 6,887,408 B2Porogen Corporation · 2005