D01F 13/00
Recovery of starting material, waste material or solvents during the manufacture of
Official title: Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like
D01F13/00 (Recovery of starting material, waste material or solvents during the manufacture of) appears on 124 US grants and 138 published applications in this corpus.
Search patents in D01F- Granted patents
- 124
- Published applications
- 138
- Assignees
- 110
- Inventors
- 397
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 3 |
| 2004 | 3 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 4 |
| 2007 | 1 | 0 |
| 2008 | 0 | 4 |
| 2009 | 2 | 3 |
| 2010 | 1 | 4 |
| 2011 | 3 | 2 |
| 2012 | 2 | 2 |
| 2013 | 2 | 9 |
| 2014 | 0 | 3 |
| 2015 | 5 | 3 |
| 2016 | 4 | 8 |
| 2017 | 2 | 3 |
| 2018 | 3 | 2 |
| 2019 | 3 | 6 |
| 2020 | 4 | 12 |
| 2021 | 9 | 9 |
| 2022 | 6 | 17 |
| 2023 | 7 | 12 |
| 2024 | 16 | 15 |
| 2025 | 7 | 10 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for providing a filtered spinning dope12 May 2026US 12,624,477 B2Treetotextile AB
- Lyocell fibers and methods of producing the same17 Mar 2026US 12,577,706 B2Aalto University Foundation sr
- Quantitative Raman spectroscopy10 Mar 2026US 12,571,737 B2Aalto University Foundation sr
- Method of making articles from recyclable fabrics6 Jan 2026US 12,515,378 B2Lubrizol Advanced Materials, Inc.
- Recycling of acid-superbase conjugate ionic liquids by water removal in the lyocell spinning process30 Dec 2025US 12,509,801 B2Aalto University Foundation sr
- A method of treating regenerated cellulose fiber for textile and non-woven applications20 Aug 2026US 2026/0243016 A1Asia Pacific Rayon Limited
- Methods for producing liquid crystal polymer filaments26 Mar 2026US 2026/0084358 A1Kuraray Co., Ltd.
- Method for preparing lyocell fibers from sugarcane bagasse as raw material19 Mar 2026US 2026/0078530 A1Jinjiang Anrun Textile Co., Ltd.
- Polyurethane elastic fiber25 Dec 2025US 2025/0389056 A1
- Method for isolating fibers polylactic acid-based from a mixture of textile fibers and recovery of the latter no longer containing polylactic acid11 Dec 2025US 2025/0376569 A1Noosa
Most cited
By later US patents
- Electrodialytic water splitting process and apparatus for conversion of alkali metal sulfate values derived from spent rayon spin baths38US 4,504,373 AAllied Corporation · 1985
- Method for recovering terephthalic acid and ethylene glycol from polyester materials32US 3,952,053 ASafetech, Inc. · 1976
- Process for the concentration of sulfuric acid16US 4,613,416 AHoechst Aktiengesellschaft · 1986
- Integrated process for the production of textured polycaprolactam multifilament yarn15US 4,522,774 ABadische Corporation · 1985
- Process for recycling multicomponent mixed polymer wastes15US 5,565,158 ABASF SE · 1996