C08B 15/04
Carboxycellulose
Official title: Carboxycellulose, e.g. prepared by oxidation with nitrogen dioxide
C08B15/04 (Carboxycellulose) appears on 169 US grants and 237 published applications in this corpus.
Search patents in C08B- Granted patents
- 169
- Published applications
- 237
- Assignees
- 109
- Inventors
- 445
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 4 |
| 2002 | 3 | 2 |
| 2003 | 5 | 6 |
| 2004 | 2 | 2 |
| 2005 | 2 | 5 |
| 2006 | 3 | 0 |
| 2007 | 0 | 5 |
| 2008 | 1 | 1 |
| 2009 | 1 | 3 |
| 2010 | 2 | 3 |
| 2011 | 4 | 5 |
| 2012 | 2 | 4 |
| 2013 | 1 | 14 |
| 2014 | 4 | 10 |
| 2015 | 9 | 14 |
| 2016 | 16 | 8 |
| 2017 | 7 | 14 |
| 2018 | 4 | 14 |
| 2019 | 5 | 23 |
| 2020 | 13 | 13 |
| 2021 | 15 | 25 |
| 2022 | 14 | 18 |
| 2023 | 13 | 18 |
| 2024 | 17 | 8 |
| 2025 | 10 | 11 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polysaccharide derivatives for detergent compositions15 Sep 2026US 12,735,511 B2
- Fibrous cellulose, fibrous cellulose dispersion, and fibrous cellulose production method16 Jun 2026US 12,655,233 B2Oji Holdings Corporation
- Cationic dyes and uses thereof12 May 2026US 12,624,215 B2Ever Dye
- Viscous aqueous composition and skin external preparation17 Feb 2026US 12,551,427 B2DKS Co. Ltd.
- Nanocellulose compositions and processes to produce same9 Dec 2025US 12,492,267 B2GranBio Intellectual Property Holdings, LLC
- Modified carboxymethyl cellulose, their compositions and the uses thereof27 Aug 2026US 2026/0250428 A1ISP Investments Inc.
- Cationic dyes and uses thereof20 Aug 2026US 2026/0242608 A1Ever Dye
- Methods for Preparing Self-Structured Cellulose Aerogel Materials from Hydrogel and Their Applications30 Apr 2026US 2026/0117037 A1
- Anionically modified cellulose nanofiber-containing powder16 Apr 2026US 2026/0103543 A1Nippon Paper Industries Co., Ltd.
- Carbon nanotube dispersion9 Apr 2026US 2026/0098174 A1Mitsubishi Pencil Company, Limited
Most cited
By later US patents
- Powdered oxidized cellulose189US 6,627,749 B1University of Iowa Research Foundation · 2003
- Process for the production of polysaccharide-based polycarboxylates100US 5,541,316 AHenkel Kommanditgesellschaft auf Aktien · 1996
- Method of making carboxylated cellulose fibers and products of the method94US 6,379,494 B1Weyerhaeuser Company · 2002
- Method for the controlled oxidation of polysaccharides91US 8,252,921 B2Centre National de la Recherche Scientifique (CNRS) · 2012
- Cellulose oxidation by nitrogen dioxide in a perfluorinated tertiary amine solvent83US 7,645,874 B2Xylos Corporation · 2010