D01F 9/24
From macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated
Official title: from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
D01F9/24 (From macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated) appears on 78 US grants and 67 published applications in this corpus.
Search patents in D01F- Granted patents
- 78
- Published applications
- 67
- Assignees
- 84
- Inventors
- 254
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 3 |
| 2007 | 1 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 2 |
| 2013 | 0 | 2 |
| 2014 | 2 | 1 |
| 2015 | 3 | 4 |
| 2016 | 1 | 4 |
| 2017 | 2 | 10 |
| 2018 | 3 | 3 |
| 2019 | 3 | 4 |
| 2020 | 4 | 3 |
| 2021 | 0 | 4 |
| 2022 | 1 | 4 |
| 2023 | 3 | 3 |
| 2024 | 7 | 8 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Manufacturing method for carbon fiber25 Nov 2025US 12,480,231 B2Formosa Plastics Corporation
- Hybrid carbon nanofibers products and methods of fabricating the same15 Jul 2025US 12,359,350 B2The Florida International University Board of Trustees
- Carbon fiber and method for producing the same10 Dec 2024US 12,163,258 B2Kabushiki Kaisha Toyota Chuo Kenkyusho
- Carbon fibre precursors6 Aug 2024US 12,054,616 B2University of Limerick
- Method of producing amorphous carbon fibers, carbon fibers made therefrom and anodes made therefrom for use in electrochemical cells6 Aug 2024US 12,054,854 B2Purdue Research Foundation
- Composition for producing activated carbon, method for producing same, molded body for producing activated carbon, method for producing same, fibers for producing activated carbon fibers, method for producing same, activated carbon precursor, activated carbon fiber precursor, carbide, carbon fibers, activated carbon, method for producing same, activated carbon fibers, and method for producing same29 May 2025US 2025/0171315 A1Idemitsu Kosan Co., Ltd.
- Graphitization of Electrospun Polyimide Nanofiber17 Apr 2025US 2025/0122650 A2George Mason University
- Hybrid carbon nanofibers products and methods of fabricating the same5 Dec 2024US 2024/0400767 A1The Florida International University Board of Trustees
- Flameproof polyphenylene ether formed body, flameproof polyphenylene ether fiber formed body, carbon formed body, activated carbon formed body, and method for manufacturing same14 Nov 2024US 2024/0376648 A1TOYOBO MC Corporation
- Conversion of Organic Material to Doped Nanocarbon Structures via Microwave Plasma Pyrolysis29 Aug 2024US 2024/0286907 A1Board of Regents, The University of Texas System
Most cited
By later US patents
- High modulus, high strength carbon fibers produced from mesophase pitch102US 4,005,183 AUnion Carbide Corporation · 1977
- Method of sealing open ends of ceramic honeycomb structural body54US 4,559,193 ANGK Insulators, Ltd. · 1985
- Porous carbonaceous material and a method for producing the same54US 5,648,027 AOsaka Gas Co., Ltd. · 1997
- Process for producing graphite films and fibers41US 4,915,984 AMatsushita Electric Industrial Co., Ltd. · 1990
- Method for adsorbing harmful substance34US 4,046,525 AToyobo Co., Ltd. · 1977