C08L 61/20
Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached
Official title: Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen (with aminophenols C08L61/04)
C08L61/20 (Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached) appears on 1,142 US grants and 674 published applications in this corpus.
Search patents in C08L- Granted patents
- 1,142
- Published applications
- 674
- Assignees
- 525
- Inventors
- 2,566
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 31 | 0 |
| 1977 | 36 | 0 |
| 1978 | 44 | 0 |
| 1979 | 45 | 0 |
| 1980 | 30 | 0 |
| 1981 | 30 | 0 |
| 1982 | 21 | 0 |
| 1983 | 32 | 0 |
| 1984 | 23 | 0 |
| 1985 | 23 | 0 |
| 1986 | 15 | 0 |
| 1987 | 23 | 0 |
| 1988 | 11 | 0 |
| 1989 | 24 | 0 |
| 1990 | 19 | 0 |
| 1991 | 25 | 0 |
| 1992 | 19 | 0 |
| 1993 | 19 | 0 |
| 1994 | 33 | 0 |
| 1995 | 25 | 0 |
| 1996 | 18 | 0 |
| 1997 | 30 | 0 |
| 1998 | 30 | 0 |
| 1999 | 28 | 0 |
| 2000 | 21 | 0 |
| 2001 | 30 | 9 |
| 2002 | 25 | 31 |
| 2003 | 34 | 32 |
| 2004 | 21 | 29 |
| 2005 | 9 | 31 |
| 2006 | 11 | 30 |
| 2007 | 18 | 18 |
| 2008 | 10 | 36 |
| 2009 | 9 | 31 |
| 2010 | 12 | 34 |
| 2011 | 23 | 24 |
| 2012 | 16 | 35 |
| 2013 | 16 | 35 |
| 2014 | 16 | 32 |
| 2015 | 31 | 36 |
| 2016 | 31 | 30 |
| 2017 | 29 | 22 |
| 2018 | 16 | 22 |
| 2019 | 17 | 24 |
| 2020 | 15 | 20 |
| 2021 | 23 | 24 |
| 2022 | 13 | 16 |
| 2023 | 16 | 25 |
| 2024 | 16 | 22 |
| 2025 | 22 | 16 |
| 2026 | 8 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multilayer film and method for producing same22 Sep 2026US 12,742,048 B2Toray Industries, Inc.
- Acrylic polyester resin and an aqueous coating composition containing the same15 Sep 2026US 12,735,524 B2PPG Industries Ohio, Inc.
- Modified melamine-formaldehyde resin, a paper impregnated with a modified melamine-formaldehyde resin, a method for manufacturing a floor panel, and use of dicyandiamide as a modifier in a melamine-formaldehyde resin26 May 2026US 12,636,861 B2Unilin BV
- Formaldehyde-free binder compositions and methods of making the binders under controlled acidic conditions19 May 2026US 12,630,474 B2Johns Manville
- Binder compositions and composite19 May 2026US 12,630,705 B2Bakelite Chemicals LLC
- Formaldehyde-free binder compositions and methods of making the binders under controlled acidic conditions6 Aug 2026US 2026/0225951 A1Johns Manville
- Engineered wood adhesives and engineered wood product therefrom30 Jul 2026US 2026/0217980 A1Cargill, Incorporated
- Method for producing drawn/ironed can and drawn/ironed can9 Jul 2026US 2026/0192981 A1Toyo Seikan Group Holdings, Ltd.
- Resin composition, cured product, prepreg, metal foil-clad laminate, resin composite sheet, and printed wiring board18 Jun 2026US 2026/0167815 A1Mitsubishi Gas Chemical Company, Inc.
- Single-component adhesive compositions11 Jun 2026US 2026/0159725 A1Ohio State Innovation Foundation
Most cited
By later US patents
- Aminoplast curable film-forming compositions providing films having resistance to acid etching485US 6,235,858 B1PPG Industries Ohio, Inc. · 2001
- Fire retardant compositions and methods for preserving wood products255US 6,620,349 B12003
- Composite color-plus-clear coating utilizing carbamate-functional polymer composition in the clearcoat148US 5,356,669 ABASF SE · 1994
- Collagen-containing preparations108US 4,001,442 AElastin-Werk Aktiengesellschaft · 1977
- Method for forming tranparent multilayers86US 5,009,936 ANippon Paint Co., Ltd. · 1991