D21H 17/47
Condensation polymers of aldehydes or ketones
D21H17/47 (Condensation polymers of aldehydes or ketones) appears on 279 US grants and 164 published applications in this corpus.
Search patents in D21H- Granted patents
- 279
- Published applications
- 164
- Assignees
- 196
- Inventors
- 661
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 17 | 0 |
| 1978 | 13 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 12 | 0 |
| 1982 | 4 | 0 |
| 1983 | 11 | 0 |
| 1984 | 11 | 0 |
| 1985 | 9 | 0 |
| 1986 | 8 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 8 | 0 |
| 1999 | 8 | 0 |
| 2000 | 6 | 0 |
| 2001 | 6 | 1 |
| 2002 | 4 | 4 |
| 2003 | 5 | 8 |
| 2004 | 11 | 9 |
| 2005 | 3 | 8 |
| 2006 | 3 | 11 |
| 2007 | 6 | 18 |
| 2008 | 2 | 6 |
| 2009 | 5 | 10 |
| 2010 | 3 | 4 |
| 2011 | 3 | 10 |
| 2012 | 6 | 10 |
| 2013 | 6 | 6 |
| 2014 | 7 | 5 |
| 2015 | 4 | 8 |
| 2016 | 2 | 6 |
| 2017 | 6 | 7 |
| 2018 | 5 | 2 |
| 2019 | 5 | 7 |
| 2020 | 3 | 2 |
| 2021 | 5 | 2 |
| 2022 | 2 | 5 |
| 2023 | 1 | 2 |
| 2024 | 2 | 7 |
| 2025 | 1 | 3 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods for manufacturing laminate, impregnated decorative paper and laminate obtained thereby25 Aug 2026US 12,715,206 B2Unilin BV
- Method for producing wet-running friction paper28 Jul 2026US 12,692,663 B2Schaeffler Technologies AG & Co. KG
- Coated articles and their method of manufacturing and use28 Apr 2026US 12,612,733 B2Surfactor Germany GmbH
- Method for manufacturing a laminate, an aminoplast resin catalyst used therein, and a laminate obtained thereby23 Dec 2025US 12,502,880 B2Unilin BV
- Preparation method of tea residue fiber raw materials and application thereof22 Oct 2024US 12,123,142 B2
- Structure for producing casting, method for producing same, and method for producing casting using same16 Jul 2026US 2026/0199964 A1Kao Corporation
- Phenolic resin composition and article11 Jun 2026US 2026/0159719 A1Sumitomo Bakelite Co., Ltd.
- Highly wear-resistant wet paper-based friction material, preparation method and use thereof12 Feb 2026US 2026/0042947 A1China National Pulp & Paper Research Inst. Co.,Ltd
- Fluorine-containing compound13 Nov 2025US 2025/0346778 A1Daikin Industries, Ltd.
- Conductive paper, production method thereof, metallic adherend and production method thereof30 Oct 2025US 2025/0333906 A1NSK-Warner K. K.
Most cited
By later US patents
- Binder coated discontinuous fibers with adhered particulate materials234US 5,432,000 AWeyerhaeuser Company · 1995
- Conductive laminate flooring134US 4,724,187 ANevamar Corporation · 1988
- Polyethylene glycol as a binder material for fibers91US 5,498,478 AWeyerhaeuser Company · 1996
- Method for the production of fibre composite materials impregnated with resin82US 4,483,889 AKemaNord AB · 1984
- Nonwoven glass fiber mat for facing gypsum board and method of making69US 5,772,846 AJohns Manville International, Inc. · 1998