D04H 1/43
Acrylonitrile series
D04H1/43 (Acrylonitrile series) appears on 91 US grants and 122 published applications in this corpus.
Search patents in D04H- Granted patents
- 91
- Published applications
- 122
- Assignees
- 85
- Inventors
- 351
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 6 |
| 2003 | 4 | 2 |
| 2004 | 4 | 6 |
| 2005 | 2 | 10 |
| 2006 | 2 | 8 |
| 2007 | 2 | 7 |
| 2008 | 1 | 3 |
| 2009 | 3 | 4 |
| 2010 | 3 | 3 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 4 |
| 2014 | 2 | 4 |
| 2015 | 0 | 1 |
| 2016 | 0 | 4 |
| 2017 | 4 | 3 |
| 2018 | 1 | 5 |
| 2019 | 0 | 3 |
| 2020 | 3 | 5 |
| 2021 | 2 | 6 |
| 2022 | 0 | 14 |
| 2023 | 7 | 4 |
| 2024 | 6 | 8 |
| 2025 | 5 | 4 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sub-micron fibrous membrane and method for producing same28 Oct 2025US 12,454,772 B2Idklab Inc.
- Enhanced flash evaporation/electrospinning composite spinning equipment21 Oct 2025US 12,448,709 B2Shanghai Xunjiang Technology Co., Ltd.
- Treatment agent, flame resistant fiber nonwoven fabric, carbon fiber nonwoven fabric, and methods for producing same7 Oct 2025US 12,435,464 B2Takemoto Yushi Kabushiki Kaisha
- Method for obtaining superabsorbent polymers via alkaline hydrolysis with pressurized water vapour, using polyacrylonitrile and acrylic fibres and fabrics22 Jul 2025US 12,364,968 B2Instituto Granado De Tecnologia Da Poliacrilontirila Ltda
- Non-flammable thermal insulating composite substrate for motor vehicles and production method18 Mar 2025US 12,251,910 B2Agotex S.R.L.
- 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
- Article including blown microfibers and fire barrier particles and related processes24 Sep 2026US 2026/0286585 A13M Innovative Properties Company
- Non-Woven Fabric16 Jul 2026US 2026/0201615 A1Asahi Kasei Kabushiki Kaisha
- Flame-resistant roofing underlayment and support layer thereof22 Jan 2026US 2026/0022562 A1
- Non-woven fabric, separator and battery1 Jan 2026US 2026/0002301 A1Shenzhen Senior Technology Material Co., Ltd.
Most cited
By later US patents
- Preparation of bonded fiber structures for cell implantation119US 5,512,600 AMassachusetts Institute of Technology · 1996
- Blended-fibre filter material109US 4,798,850 ANational Research Development Corporation · 1989
- Preparation of bonded fiber structures for cell implantation83US 5,696,175 AMassachusetts Institute of Technology · 1997
- Electret fibers having improved charge stability, process for the production thereof and textile material containing these electret fibers.63US 5,871,845 AHiecgst Aktiengesellshat · 1999
- Burn through resistant nonwoven mat, barrier, and insulation system61US 6,551,951 B1Johns Manville International, Inc. · 2003