C23C 22/72
Treatment of iron or alloys based thereon
C23C22/72 (Treatment of iron or alloys based thereon) appears on 17 US grants and 8 published applications in this corpus.
Search patents in C23C- Granted patents
- 17
- Published applications
- 8
- Assignees
- 14
- Inventors
- 59
- Latest grant
- 11 May 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 1 |
| 2014 | 2 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Hollow airfoil construction utilizing functionally graded materials11 May 2021US 11,000,899 B2Raytheon Technologies Corporation
- Conversion coating and method of making9 Jun 2020US 10,676,828 B2Saint-Gobain Performance Plastics Corporation
- Method for the in situ passivation of the steel surfaces of a nuclear reactor31 Jul 2018US 10,037,822 B2Joint Stock Company “Akme-Engineering”
- Method for producing a friction element9 Aug 2016US 9,410,583 B2Miba Frictec GmbH
- Method of bonding conductive material to stainless steel, and HDD magnetic head suspension30 Dec 2014US 8,920,887 B2Suncall Corporation
- Surface-treated galvanized steel sheet22 May 2025US 2025/0161982 A1Jfe Steel Corporation
- Conversion coating and method of making1 Mar 2018US 2018/0057946 A1Saint-Gobain Performance Plastics Corporation
- Method for the In Situ Passivation of the Steel Surfaces of a Nuclear Reactor11 Aug 2016US 2016/0232990 A1Joint Stock Company “Akme-Engineering”
- Method for producing a friction element10 Jul 2014US 2014/0190783 A1Miba Frictec GmbH
- Hollow airfoil construction utilizing functionally graded materials1 Aug 2013US 2013/0195671 A1Raytheon Technologies Corporation
Most cited
By later US patents
- Process for improving the corrosion resistance of ferrous metal parts16US 4,448,611 ACentre Stephanois de Recherches Mecaniques Hydromecanique et Frottement · 1984
- Process for increasing the corrosion resistance of nitrided structural parts made of iron material12US 4,292,094 ADegussa AG · 1981
- Method for sulfurizing cast iron8US 4,230,507 AKabushiki Kaisha Toyota Chuo Kenkyusho · 1980
- Stainless steels coated with black oxides7US 3,963,530 ACoral Chemical Company · 1976
- Method for producing solar collector plates7US 4,255,213 AAmax Inc. · 1981