D04H 1/43835
Mixed fibres
Official title: {Mixed fibres, e.g. at least two chemically different fibres or fibre blends}
D04H1/43835 (Mixed fibres) appears on 582 US grants and 756 published applications in this corpus.
Search patents in D04H- Granted patents
- 582
- Published applications
- 756
- Assignees
- 417
- Inventors
- 1,858
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 12 | 0 |
| 1989 | 18 | 0 |
| 1990 | 20 | 0 |
| 1991 | 8 | 0 |
| 1992 | 6 | 0 |
| 1993 | 14 | 0 |
| 1994 | 14 | 0 |
| 1995 | 10 | 0 |
| 1996 | 16 | 0 |
| 1997 | 21 | 0 |
| 1998 | 16 | 0 |
| 1999 | 26 | 0 |
| 2000 | 13 | 0 |
| 2001 | 12 | 3 |
| 2002 | 18 | 28 |
| 2003 | 15 | 45 |
| 2004 | 19 | 39 |
| 2005 | 8 | 37 |
| 2006 | 6 | 42 |
| 2007 | 10 | 43 |
| 2008 | 11 | 28 |
| 2009 | 11 | 27 |
| 2010 | 18 | 27 |
| 2011 | 11 | 21 |
| 2012 | 6 | 9 |
| 2013 | 13 | 21 |
| 2014 | 9 | 16 |
| 2015 | 8 | 19 |
| 2016 | 11 | 21 |
| 2017 | 12 | 22 |
| 2018 | 10 | 17 |
| 2019 | 17 | 22 |
| 2020 | 15 | 40 |
| 2021 | 13 | 20 |
| 2022 | 18 | 21 |
| 2023 | 16 | 32 |
| 2024 | 21 | 60 |
| 2025 | 22 | 53 |
| 2026 | 13 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High efficiency synthetic filter media1 Sep 2026US 12,722,107 B2Knowlton Technologies, LLC
- Airlaid nonwoven30 Jun 2026US 12,668,902 B2Fitesa (China) Airlaid Company Limited
- Time-dependent synthetic biological barrier material9 Jun 2026US 12,649,984 B2Poly-Med, Inc.
- Flame-retardant and windproof wadding and preparation method thereof19 May 2026US 12,630,946 B2Beijing Jinlun Ward Technology Co., Ltd
- Acoustic insulation material5 May 2026US 12,620,383 B2Carver Non-Woven Technologies, LLC
- Fiber article8 Oct 2026US 2026/0308825 A1Daicel Corporation
- Metal-carbon nanofiber composite electrodes for high performance lithium-ion and lead-acid batteries8 Oct 2026US 2026/0311992 A1The Curators of the University of Missouri
- Hydroentangled nonwoven comprising cellulosic filaments17 Sep 2026US 2026/0275594 A1Essity Hygiene and Health Aktiebolag
- Time-dependent synthetic biological barrier material17 Sep 2026US 2026/0275597 A1Poly-Med, Inc.
- Ceiling basemat water reduction through strategic use of pressing and vacuuming17 Sep 2026US 2026/0275636 A1USG Interiors, Inc.
Most cited
By later US patents
- Web of blended microfibers and crimped bulking fibers445US 4,118,531 AMinnesota Mining and Manufacturing Company · 1978
- Method of charging electret filter media289US 5,496,507 AMinnesota Mining and Manufacturing Company · 1996
- Method for manufacturing an electret filter medium243US 4,588,537 AMinnesota Mining and Manufacturing Company · 1986
- Method of making fibrous electrets241US 4,375,718 ASurgikos, Inc. · 1983
- Binder coated discontinuous fibers with adhered particulate materials234US 5,432,000 AWeyerhaeuser Company · 1995