C04B 41/4582
Porous coatings
Official title: {Porous coatings, e.g. coating containing porous fillers}
C04B41/4582 (Porous coatings) appears on 86 US grants and 48 published applications in this corpus.
Search patents in C04B- Granted patents
- 86
- Published applications
- 48
- Assignees
- 64
- Inventors
- 177
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 1 |
| 2003 | 3 | 2 |
| 2004 | 4 | 6 |
| 2005 | 1 | 1 |
| 2006 | 2 | 0 |
| 2007 | 2 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 2 |
| 2016 | 1 | 2 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 2 | 4 |
| 2020 | 0 | 3 |
| 2021 | 3 | 5 |
| 2022 | 1 | 4 |
| 2023 | 1 | 3 |
| 2024 | 7 | 5 |
| 2025 | 4 | 2 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hafnon and zircon environmental barrier coatings for silicon-based components11 Aug 2026US 12,703,668 B2Rtx Corporation
- Advanced coating chemistries for CMCS26 May 2026US 12,637,393 B2ROLLS-ROYCE plc
- Environmental barrier coating12 May 2026US 12,624,225 B2Rtx Corporation
- Honeycomb filter24 Feb 2026US 12,558,641 B2NGK Insulators, Ltd.
- Refractory foam23 Sep 2025US 12,421,172 B2ZYP Coatings, Inc.
- Environmental barrier coating27 Aug 2026US 2026/0250520 A1Rtx Corporation
- Multilayer environmental barrier coating23 Apr 2026US 2026/0109655 A1Rtx Corporation
- Composite articles comprising a thermal protection structure, and related methods25 Sep 2025US 2025/0296891 A1Northrop Grumman Systems Corporation
- Refractory foam5 Jun 2025US 2025/0178976 A1ZYP Coatings, Inc.
- Method for manufacturing an osseointegrative surgical implant21 Nov 2024US 2024/0382291 A1Ceramedica, Inc.
Most cited
By later US patents
- Microfabricated filter with specially constructed channel walls, and containment well and capsule constructed with such filters171US 5,798,042 AThe Regents of the University of California · 1998
- Process to form mesostructured films157US 5,858,457 ASandia Corporation · 1999
- Micromachined capsules having porous membranes and bulk supports115US 5,770,076 AThe Regents of the University of California · 1998
- Composite foams108US 4,966,919 AThe United States of America as represented by the United States Department of Energy · 1990
- Micromachined porous membranes with bulk support108US 5,985,328 AThe Regents of the University of California · 1999