C04B 16/0658
Polyacrylonitrile
Official title: {Polyacrylonitrile}
C04B16/0658 (Polyacrylonitrile) appears on 24 US grants and 19 published applications in this corpus.
Search patents in C04B- Granted patents
- 24
- Published applications
- 19
- Assignees
- 10
- Inventors
- 20
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 2 | 0 |
| 2019 | 13 | 13 |
| 2020 | 1 | 3 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Hierarchical organic-inorganic composites synthesized by electrospinning fibers within a non-conductive and a conductive pre-ceramic gel26 Aug 2025US 12,398,073 B2Northwestern University
- Inorganic foam based on geopolymers30 Jul 2024US 12,049,426 B2Sika Technology AG
- Additive for fiber strengthening24 Jan 2023US 11,560,461 B2North Carolina State University
- Inorganic foam based on calcium sulfoaluminate20 Jul 2021US 11,066,337 B2Construction Research & Technology GmbH
- Loss circulation compositions (LCM) having Portland cement clinker11 Feb 2020US 10,557,076 B2Saudi Arabian Oil Company
- Inorganic foam based on geopolymers10 Oct 2024US 2024/0336528 A1Sika Technology AG
- Additive for fiber strengthening6 Apr 2023US 2023/0105003 A1North Carolina State University
- Hierarchical organic-inorganic composites synthesized by electrospinning fibers within a non-conductive and a conductive pre-ceramic gel24 Mar 2022US 2022/0089496 A1Northwestern University
- Additive for fiber strengthening12 Mar 2020US 2020/0079930 A1North Carolina State University
- Inorganic Foam Based On Calcium Sulfoaluminate23 Jan 2020US 2020/0024201 A1Construction Research & Technology GmbH
Most cited
By later US patents
- Hydraulic cementitious compositions reinforced with fibers containing polyacrylonitrile20US 4,772,328 ABASF SE · 1988
- Fiber-containing products made with hydraulic binder agents13US 4,414,031 AAmetex AG · 1983
- Loss circulation compositions (LCM) having portland cement clinker11US 10,144,860 B1Saudi Arabian Oil Company · 2018
- Loss circulation compositions (LCM) having portland cement clinker6US 10,246,626 B2Saudi Arabian Oil Company · 2019
- Loss circulation compositions (LCM) having Portland cement clinker6US 10,329,473 B2Saudia Arabian Oil Company · 2019