C04B 2235/775
Products showing a density-gradient
C04B2235/775 (Products showing a density-gradient) appears on 68 US grants and 96 published applications in this corpus.
Search patents in C04B- Granted patents
- 68
- Published applications
- 96
- Assignees
- 83
- Inventors
- 252
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 4 |
| 2005 | 1 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 3 |
| 2009 | 2 | 1 |
| 2010 | 1 | 3 |
| 2011 | 3 | 4 |
| 2012 | 1 | 2 |
| 2013 | 0 | 2 |
| 2014 | 2 | 3 |
| 2015 | 0 | 4 |
| 2016 | 3 | 4 |
| 2017 | 3 | 5 |
| 2018 | 4 | 2 |
| 2019 | 4 | 9 |
| 2020 | 6 | 6 |
| 2021 | 3 | 2 |
| 2022 | 3 | 9 |
| 2023 | 2 | 13 |
| 2024 | 5 | 5 |
| 2025 | 7 | 12 |
| 2026 | 9 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Controlled gradient of porosity in CMC16 Jun 2026US 12,655,069 B2Rtx Corporation
- Method for producing a porous metallic or ceramic component and component produced using the method5 May 2026US 12,617,733 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Method and apparatus for forming variable density sintered ceramic using application of alternating voltage to aqueous ceramic suspension with ice-templating21 Apr 2026US 12,606,496 B2Old Dominion University
- Methods of forming bonded articles including similar or dissimilar materials and related articles14 Apr 2026US 12,600,683 B2Battelle Energy Alliance, LLC
- Heat-resistant container31 Mar 2026US 12,589,935 B2KYOCERA Corporation
- Localized particle additions to reduce defects in ceramic matrix composites caused by complex geometry preforming20 Nov 2025US 2025/0353794 A1Rtx Corporation
- Sintered ceramic body and method of making13 Nov 2025US 2025/0346537 A1Heraeus Covantics North America LLC
- Method and device for producing ceramics and ceramic product23 Oct 2025US 2025/0326693 A1Technische Universität Darmstadt
- Gallium nitride sintered body and method for producing same26 Jun 2025US 2025/0206673 A1Tosoh Corporation
- Methods of forming bonded articles including similar or dissimilar materials and related articles1 May 2025US 2025/0136519 A1Battelle Energy Alliance, LLC
Most cited
By later US patents
- Low-density resin impregnated ceramic article having an average density of 0.15 to 0.40 g/cc27US 5,536,562 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1996
- Ceramic matrix composite structures with controlled microstructures fabricated using chemical vapor infiltration (CVI)19US 11,072,565 B2General Electric Company · 2021
- Method of ceramic molding which produces a porosity gradient and the manufacture of compound moldings using this method17US 4,710,480 ADidier-Werke AG · 1987
- Cooled refractory structure and manufacturing process therefor17US 5,174,368 ASociete Europeenne de Propulsion · 1992
- Low-density resin impregnated ceramic article and method for making the same14US 5,672,389 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1997