D01C
Chemical or biological treatment of natural filamentary or fibrous material to obtain
Official title: Chemical or biological treatment of natural filamentary or fibrous material to obtain filaments or fibres for spinning; carbonising rags to recover animal fibres
D01C (Chemical or biological treatment of natural filamentary or fibrous material to obtain) appears on 118 US grants and 174 published applications in this corpus.
Search patents in D01C- Granted patents
- 118
- Published applications
- 174
- Assignees
- 146
- Inventors
- 418
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 4 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 3 |
| 2006 | 2 | 1 |
| 2007 | 0 | 4 |
| 2008 | 1 | 4 |
| 2009 | 3 | 3 |
| 2010 | 1 | 7 |
| 2011 | 1 | 2 |
| 2012 | 3 | 4 |
| 2013 | 3 | 4 |
| 2014 | 3 | 3 |
| 2015 | 5 | 12 |
| 2016 | 2 | 7 |
| 2017 | 5 | 18 |
| 2018 | 5 | 4 |
| 2019 | 10 | 12 |
| 2020 | 8 | 13 |
| 2021 | 3 | 12 |
| 2022 | 7 | 3 |
| 2023 | 9 | 16 |
| 2024 | 8 | 13 |
| 2025 | 5 | 16 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
Recent patents
- Process for producing and using fibrillated biodegradable microfibers7 Jul 2026US 12,674,278 B2
- Method for sericin removal19 May 2026US 12,630,945 B2Wenzhou Muqing Biotechnology Co., Ltd
- Method for extracting keratin from wool/natural fibers using ionic liquids reinforced with sonication13 Jan 2026US 12,522,632 B2Najran University
- Method for producing yarn from sugarcane1 Jul 2025US 12,344,963 B2Jin Jiang An Run Textile Co., Ltd.
- Methods for making synthetic hair from plant fiber17 Jun 2025US 12,331,428 B2Rebundle, Inc.
- Process for converting raw bagasse into processed bagasse and processed bagasse made accordingly8 Oct 2026US 2026/0308642 A1
- Method for preparing lyocell fibers from sugarcane bagasse as raw material19 Mar 2026US 2026/0078530 A1Jinjiang Anrun Textile Co., Ltd.
- System and methods for producing functionalized natural fibers5 Mar 2026US 2026/0062521 A1Heartland Industries, Inc.
- A method of treating a sunflower plant stems12 Feb 2026US 2026/0043173 A1
- Natural plant fiber pile fabric textile29 Jan 2026US 2026/0028754 A1BioFluff Inc.
Most cited
By later US patents
- Method of producing fibers from a straw and board products made therefrom25US 5,656,129 AMasonite Corporation · 1997
- High-strength fibrous material consisting of natural fibres, method for the production thereof, and use of same for producing composite materials22US 8,784,503 B2Flasin Faser GmbH · 2014
- Method of preparing soluble collagen fibers18US 4,295,894 ASeton Company · 1981
- Method for degumming and bleaching decorticated plant bast fiber18US 4,617,383 AHelmic, Inc. · 1986
- Process for producing curl shrunk silk yarn16US 4,141,207 A1979