C04B 35/521
Obtained by impregnation of carbon products with a carbonisable material
Official title: {obtained by impregnation of carbon products with a carbonisable material}
C04B35/521 (Obtained by impregnation of carbon products with a carbonisable material) appears on 104 US grants and 92 published applications in this corpus.
Search patents in C04B- Granted patents
- 104
- Published applications
- 92
- Assignees
- 81
- Inventors
- 302
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 4 | 0 |
| 2003 | 3 | 8 |
| 2004 | 3 | 5 |
| 2005 | 4 | 11 |
| 2006 | 1 | 5 |
| 2007 | 4 | 4 |
| 2008 | 1 | 2 |
| 2009 | 1 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 2 |
| 2013 | 2 | 8 |
| 2014 | 1 | 5 |
| 2015 | 3 | 5 |
| 2016 | 3 | 4 |
| 2017 | 3 | 5 |
| 2018 | 4 | 4 |
| 2019 | 3 | 1 |
| 2020 | 3 | 3 |
| 2021 | 1 | 1 |
| 2022 | 4 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 3 |
| 2025 | 2 | 6 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Single-cycle rapid densification of carbon/carbon components for air and space applications28 Apr 2026US 12,612,340 B2Textron Systems Corporation
- Thermal insulation material and method for producing thermal insulation material14 Apr 2026US 12,600,681 B2Ibiden Co., Ltd.
- High temperature composites and methods for preparing high temperature composites7 Apr 2026US 12,595,214 B2Arkema France
- Methods of producing carbon/carbon composite preforms and carbon/carbon composites formed therefrom23 Dec 2025US 12,503,405 B2Purdue Research Foundation
- Carbon fiber preform, preparation method therefor and preparation method for carbon/carbon composites18 Feb 2025US 12,227,462 B2Shaoxing Research Institute of Shanghai University
- Single-cycle rapid densification of carbon/carbon components for air and space applications20 Aug 2026US 2026/0242298 A1Textron Systems Corporation
- High temperature composites and methods for preparing high temperature composites16 Jul 2026US 2026/0200807 A1Arkema France
- High temperature composites and methods for preparing high temperature composites11 Jun 2026US 2026/0159452 A1Arkema France
- Fuel cell gas diffusion layer base material and method for producing same11 Jun 2026US 2026/0163015 A1Aisin Corporation
- C/c composite and ion engine grid8 May 2025US 2025/0146196 A1Toyo Tanso Co., Ltd.
Most cited
By later US patents
- Method of rapidly densifying a porous structure524US 5,348,774 AAlliedSignal Inc. · 1994
- Method of making a carbon foam material and resultant product65US 5,888,469 AWest Virginia University · 1999
- Friction element in composite carbon/carbon-silicon carbide material and method for manufacturing same48US 6,221,475 B1Societe Nationale d'Etude et de Construction de Moteurs D'Aviation "S.N.E.C.M A." · 2001
- Porous carbon product, method for the production thereof, and use of the same47US 9,287,556 B2Heraeus Quarzglas GmbH & Co.KG · 2016
- Rapid densification of porous bodies (preforms) with high viscosity resins or pitches using a resin transfer molding process38US 6,537,470 B1Honeywell International Inc. · 2003