F02B 77/02
Surface coverings of combustion-gas-swept parts
Official title: Surface coverings of combustion-gas-swept parts (of pistons F02F3/10; of cylinders and cylinder heads F02F1/00)
F02B77/02 (Surface coverings of combustion-gas-swept parts) appears on 217 US grants and 97 published applications in this corpus.
Search patents in F02B- Granted patents
- 217
- Published applications
- 97
- Assignees
- 120
- Inventors
- 460
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 9 | 0 |
| 1978 | 19 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 11 | 0 |
| 1989 | 8 | 0 |
| 1990 | 9 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 3 |
| 2002 | 0 | 3 |
| 2003 | 8 | 7 |
| 2004 | 1 | 3 |
| 2005 | 3 | 1 |
| 2006 | 0 | 4 |
| 2007 | 2 | 1 |
| 2008 | 1 | 1 |
| 2009 | 3 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 6 |
| 2014 | 3 | 4 |
| 2015 | 3 | 5 |
| 2016 | 2 | 9 |
| 2017 | 7 | 13 |
| 2018 | 4 | 6 |
| 2019 | 12 | 4 |
| 2020 | 5 | 12 |
| 2021 | 3 | 3 |
| 2022 | 4 | 1 |
| 2023 | 3 | 4 |
| 2024 | 2 | 0 |
| 2025 | 4 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Method for making high lubricity abradable material and abradable coating18 Mar 2025US 12,252,793 B2Metal Improvement Company, Inc.
- Internal combustion engine with coated ignition system component(s)22 Oct 2024US 12,123,343 B1Pratt & Whitney Canada Corp.
- Housing assembly for rotary engine and method of manufacturing thereof19 Mar 2026US 2026/0078695 A1Pratt & Whitney Canada Corp.
- Ammonia-burning combustion engine27 Feb 2025US 2025/0067209 A1Johnson Matthey Public Limited Company
- Engine’s efficiency by heat preservation, and engines employing this invent26 Oct 2023US 2023/0340905 A1
- Method for making high lubricity abradable material and abradable coating27 Jul 2023US 2023/0235440 A1Metal Improvement Company, Inc.
- Piston including a composite layer applied to metal substrate23 Mar 2023US 2023/0088665 A1Tenneco Inc.
Most cited
By later US patents
- Method and apparatus for application of thermal spray coatings to engine blocks598US 5,271,967 AGeneral Motors Corporation · 1993
- Internal combustion engine102US 4,805,571 AHumphrey Cycle Engine Partners, L.P. · 1989
- Anti-friction coating composition containing solid lubricants81US 5,482,637 AFord Motor Company · 1996
- Process for coating a metallic surface with a wear-resistant material78US 4,218,494 ACentro Richerche Fiat S.p.A. · 1980
- Ceramic thermal barrier coating for rapid thermal cycling applications69US 5,320,909 ACummins Engine Company, Inc. · 1994