D21H 17/17
Ketenes
Official title: Ketenes, e.g. ketene dimers
D21H17/17 (Ketenes) appears on 237 US grants and 164 published applications in this corpus.
Search patents in D21H- Granted patents
- 237
- Published applications
- 164
- Assignees
- 116
- Inventors
- 459
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 6 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 8 | 0 |
| 1989 | 7 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 13 | 2 |
| 2002 | 8 | 6 |
| 2003 | 5 | 6 |
| 2004 | 5 | 6 |
| 2005 | 3 | 4 |
| 2006 | 0 | 4 |
| 2007 | 4 | 6 |
| 2008 | 2 | 5 |
| 2009 | 3 | 3 |
| 2010 | 3 | 9 |
| 2011 | 2 | 4 |
| 2012 | 6 | 8 |
| 2013 | 2 | 1 |
| 2014 | 6 | 11 |
| 2015 | 5 | 3 |
| 2016 | 2 | 7 |
| 2017 | 7 | 4 |
| 2018 | 11 | 9 |
| 2019 | 4 | 9 |
| 2020 | 4 | 12 |
| 2021 | 6 | 4 |
| 2022 | 7 | 11 |
| 2023 | 8 | 9 |
| 2024 | 10 | 7 |
| 2025 | 4 | 3 |
| 2026 | 3 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Oil resistant article21 Apr 2026US 12,606,958 B2SWM Holdings US, LLC
- Unbleached natural brown copier paper and process thereof24 Feb 2026US 12,559,887 B2Shree Krishna Paper Mills and Industries Limited
- Hemp paper packaging material for foodstuff17 Feb 2026US 12,553,184 B2Wm. Wrigley Jr. Company
- Moisture/oil-resistant fiber/starch composite materials28 Oct 2025US 12,454,795 B2The United States of America as represented by the Secretary of Agriculture
- Fiber-based microwavable bowls with selective spray coating23 Sep 2025US 12,421,668 B2Footprint International, LLC
- Oil Resistant Sheet Product8 Oct 2026US 2026/0308851 A1SWM Holdco Luxembourg
- A method for producing a fiber based article1 Oct 2026US 2026/0297852 A1Kemira Oyj
- Woven fabric30 Jul 2026US 2026/0218420 A1Spinnova Oyj
- Nonwoven fabrics, products comprising the same and methods for manufacturing nonwoven fabrics23 Jul 2026US 2026/0210049 A1Spinnova Oyj
- Aqueous dispersion of alkyl ketene dimer and its use23 Jul 2026US 2026/0210054 A1Kemira Oyj
Most cited
By later US patents
- Decor sheet and decorative laminates prepared therefrom79US 5,601,930 AThe Mead Corporation · 1997
- Composition and method for improved ink jet printing performance79US 6,207,258 B1Hercules Incorporated · 2001
- Aqueous sizing compositions75US 4,522,686 AHercules Incorporated · 1985
- Ketene dimer paper sizing compositions54US 4,240,935 AHercules Incorporated · 1980
- Sizing method and sizing composition for use therein50US 4,279,794 AHercules Incorporated · 1981