D01F 6/70
From polyurethanes
Official title: from polyurethanes
D01F6/70 (From polyurethanes) appears on 326 US grants and 338 published applications in this corpus.
Search patents in D01F- Granted patents
- 326
- Published applications
- 338
- Assignees
- 199
- Inventors
- 874
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 9 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 16 | 0 |
| 1995 | 6 | 0 |
| 1996 | 8 | 0 |
| 1997 | 9 | 0 |
| 1998 | 8 | 0 |
| 1999 | 10 | 0 |
| 2000 | 9 | 0 |
| 2001 | 15 | 4 |
| 2002 | 17 | 8 |
| 2003 | 15 | 18 |
| 2004 | 10 | 13 |
| 2005 | 10 | 12 |
| 2006 | 6 | 11 |
| 2007 | 3 | 13 |
| 2008 | 2 | 1 |
| 2009 | 2 | 8 |
| 2010 | 5 | 12 |
| 2011 | 2 | 7 |
| 2012 | 5 | 10 |
| 2013 | 5 | 9 |
| 2014 | 8 | 14 |
| 2015 | 4 | 9 |
| 2016 | 11 | 13 |
| 2017 | 6 | 18 |
| 2018 | 11 | 15 |
| 2019 | 7 | 11 |
| 2020 | 8 | 24 |
| 2021 | 11 | 18 |
| 2022 | 12 | 28 |
| 2023 | 14 | 19 |
| 2024 | 9 | 18 |
| 2025 | 8 | 15 |
| 2026 | 14 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polyurethane elastic fiber, gather member containing same, and sanitary material15 Sep 2026US 12,735,811 B2Asahi Kasei Kabushiki Kaisha
- Fibers, fiber multilayer structure, spinning solution for electrospinning, and method for producing fibers7 Jul 2026US 12,674,017 B2Dainichiseika Color & Chemicals Mfg. Co., Ltd.
- Shark skin biomimetic fabrics for functional clothing16 Jun 2026US 12,655,541 B2Colorado State University Research Foundation
- Polymers with engineered segment molecular weight2 Jun 2026US 12,644,000 B2The LYCRA Company LLC
- TPU ball structure and manufacturing method thereof14 Apr 2026US 12,599,815 B2San Fang Chemical Industry Co., Ltd.
- Fibers, fiber multilayer structure, spinning solution for electrospinning, and method for producing fibers1 Oct 2026US 2026/0297241 A1Dainichiseika Color & Chemicals Mfg. Co., Ltd.
- Dope additive and fiber17 Sep 2026US 2026/0275582 A1
- Polyurethane urea and its preparation method20 Aug 2026US 2026/0242529 A1BASF SE
- Polyether ester polyol, preparation method therefor, and method for preparing polyurethane elastomer by using polyether ester polyol13 Aug 2026US 2026/0234325 A1Zhengzhou Zhongyuan Spandex Engineering Technology Co., Ltd
- Spandex dry-spinning stock solution continuous reactor and reaction method23 Jul 2026US 2026/0209995 A1Zhengzhou Zhongyuan Spandex Engineering Technology Co., Ltd
Most cited
By later US patents
- Method of forming implantable vascular grafts230US 4,738,740 ACorvita Corporation · 1988
- Antimicrobial compositions, process for preparing the same and use177US 5,180,585 AE. I. Du Pont de Nemours and Company · 1993
- Thermoplastic polyether urethane143US 5,959,059 AThe B. F. Goodrich Company · 1999
- Antimicrobial compositions, process for preparing the same and use110US 5,503,840 AE. I. Du Pont de Nemours and Company · 1996
- Vascular prosthesis and method for production thereof107US 7,244,272 B2Nicast Ltd. · 2007