D21C 9/005
Organic compounds
Official title: {organic compounds}
D21C9/005 (Organic compounds) appears on 241 US grants and 260 published applications in this corpus.
Search patents in D21C- Granted patents
- 241
- Published applications
- 260
- Assignees
- 166
- Inventors
- 630
- Latest grant
- 3 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 7 | 0 |
| 2000 | 2 | 0 |
| 2001 | 11 | 1 |
| 2002 | 12 | 9 |
| 2003 | 16 | 11 |
| 2004 | 3 | 10 |
| 2005 | 5 | 11 |
| 2006 | 9 | 8 |
| 2007 | 2 | 6 |
| 2008 | 3 | 12 |
| 2009 | 4 | 1 |
| 2010 | 5 | 3 |
| 2011 | 5 | 8 |
| 2012 | 2 | 4 |
| 2013 | 3 | 9 |
| 2014 | 4 | 13 |
| 2015 | 6 | 14 |
| 2016 | 14 | 12 |
| 2017 | 8 | 18 |
| 2018 | 10 | 17 |
| 2019 | 12 | 17 |
| 2020 | 13 | 20 |
| 2021 | 16 | 14 |
| 2022 | 6 | 12 |
| 2023 | 8 | 9 |
| 2024 | 7 | 4 |
| 2025 | 3 | 12 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Carboxylated cellulose nanofiber and preparation method thereof3 Jun 2025US 12,320,069 B2Northeast Forestry University
- Fluff pulp13 May 2025US 12,297,600 B2Stora Enso OYJ
- Strong and tough structural wood materials, and methods for fabricating and use thereof29 Apr 2025US 12,285,882 B2University of Maryland, College Park
- Carboxymethylated cellulose nanofibers22 Oct 2024US 12,123,109 B2Nippon Paper Industries Co., Ltd.
- Nanocellulose production co-located at a pulp and paper mill3 Sep 2024US 12,077,910 B2GranBio Intellectual Property Holdings, LLC
- Process for producing hygienized pulp8 Oct 2026US 2026/0308846 A1Kemira Oyj
- Process for producing rigid cellulosic product20 Aug 2026US 2026/0243023 A1Honext Material, Sl
- Graft polymerization of cationic monomers into cellulosic fibers for simultaneous sustainable dyeing and finishing9 Jul 2026US 2026/0193834 A1North Carolina State University
- Wax and oil resistant agent for pulp5 Feb 2026US 2026/0035861 A1Daikin Industries, Ltrd.
- Producing nanofibers, microfibers, and lignin from lignocellulosic biomass22 Jan 2026US 2026/0022519 A1University of Washington
Most cited
By later US patents
- Absorbent structure containing individualized, polycarboxylic acid crosslinked wood pulp cellulose fibers694US 5,137,537 AThe Procter & Gamble Cellulose Company · 1992
- Individualized cellulosic fibers crosslinked with polyacrylic acid polymers185US 5,549,791 AThe Procter & Gamble Company · 1996
- Process for preparing individualized, polycarboxylic acid crosslinked fibers178US 5,190,563 AThe Proctor & Gamble Company · 1993
- Absorbent articles with nits and free-flowing particles154US 6,667,424 B1Kimberly-Clark Worldwide, Inc. · 2003
- Softening and conditioning fibers with imidazolinium compounds149US 4,720,383 AQuaker Chemical Corporation · 1988