D01F 9/32
Apparatus therefor
D01F9/32 (Apparatus therefor) appears on 234 US grants and 157 published applications in this corpus.
Search patents in D01F- Granted patents
- 234
- Published applications
- 157
- Assignees
- 120
- Inventors
- 508
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 10 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 20 | 0 |
| 1986 | 7 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 3 |
| 2010 | 4 | 3 |
| 2011 | 2 | 5 |
| 2012 | 1 | 4 |
| 2013 | 2 | 7 |
| 2014 | 7 | 11 |
| 2015 | 7 | 11 |
| 2016 | 8 | 15 |
| 2017 | 10 | 12 |
| 2018 | 7 | 12 |
| 2019 | 14 | 11 |
| 2020 | 7 | 11 |
| 2021 | 9 | 13 |
| 2022 | 8 | 4 |
| 2023 | 5 | 9 |
| 2024 | 8 | 12 |
| 2025 | 3 | 3 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pitch compositions for spinning into carbon articles and methods relating thereto19 May 2026US 12,630,947 B2ExxonMobil Technology and Engineering Company
- Apparatus and method for close proximity carbonization of polymeric materials for carbon fiber production5 May 2026US 12,618,175 B2
- Production method for precarbonized fiber bundle, production method for carbon fiber bundle, and precarbonization furnace6 Jan 2026US 12,516,451 B2Toray Industries, Inc.
- Method for manufacturing carbon fiber bundle15 Jul 2025US 12,359,349 B2Toray Industries, Inc.
- Method for preparing medium- and high-modulus large tow carbon fibers4 Feb 2025US 12,215,441 B1Jiangsu Hengrui Aerospace Industry Co., Ltd.
- Systems and processes for producing low cost bulk random carbon fibers using asphaltene as a feedstock25 Jun 2026US 2026/0176798 A1B.C. Research Inc.
- Systems and methods for controlling closed die tooling movement during heat treatment of fiberous preform13 Nov 2025US 2025/0347034 A1Goodrich Corporation
- Process for preparing a carbon fiber precursor17 Jul 2025US 2025/0230583 A1
- Continuous oven9 Jan 2025US 2025/0012005 A1Teijin Carbon Europe GmbH
- Process for preparing a carbon fiber precursor31 Oct 2024US 2024/0360596 A1
Most cited
By later US patents
- Production of metal ion containing carbon fibers useful in electron shielding applications454US 3,997,638 ACelanese Corporation · 1976
- Process for producing carbon fibers from mesophase pitch51US 3,976,729 AUnion Carbide Corporation · 1976
- Active carbon fibers and filter adsorption unit for water purification comprising said fibers50US 4,696,742 AToho Beslon Co., Ltd. · 1987
- Method of making carbon fibers and resin-impregnated carbon fibers43US 4,100,004 ASecuricum S.A. · 1978
- Treatment of pitches in carbon artifact manufacture42US 4,277,324 AExxon Research & Engineering Co. · 1981