C23C 8/66
Of ferrous surfaces
Official title: of ferrous surfaces
C23C8/66 (Of ferrous surfaces) appears on 23 US grants and 25 published applications in this corpus.
Search patents in C23C- Granted patents
- 23
- Published applications
- 25
- Assignees
- 37
- Inventors
- 88
- Latest grant
- 26 Nov 2024
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 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 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 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 4 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 2 |
| 2016 | 0 | 3 |
| 2017 | 2 | 2 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 1 | 2 |
| 2021 | 2 | 4 |
| 2022 | 2 | 1 |
| 2023 | 1 | 1 |
| 2024 | 2 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Precipitation strengthened carburizable and nitridable steel alloys26 Nov 2024US 12,152,295 B2QuesTek Innovations LLC
- Guiding member, mechanical system comprising such a guiding member, and method for producing such a guiding member24 Sep 2024US 12,098,744 B2Hydromecanique Et Frottement
- Method for carburizing steel member, steel component, and carburizing agent22 Aug 2023US 11,732,342 B2Nsk Ltd.
- Process for preparation and use of inorganic markers for security identification/marking on explosives, fuses and ammunition after detonation and on firearms and metal projectiles, products obtained and process of inserting markers on explosives, fuses and ammunition and on firearms and metal projectiles15 Nov 2022US 11,499,217 B2Meta - SoluçõEs Em SegurançA Ltda.
- Method for producing surface-hardened material17 May 2022US 11,332,818 B2Nihon Parkerizing Co., Ltd.
- Carburizer and carburization method using the same12 Feb 2026US 2026/0043120 A1Nippon Steel Corporation
- Method for carburizing steel member, steel component, and carburizing agent20 Jul 2023US 2023/0227958 A1Nsk Ltd.
- Guiding Member, Mechanical System Comprising Such A Guiding Member, And Method For Producing Such A Guiding Member14 Jul 2022US 2022/0220999 A1Hydromecanique Et Frottement
- Carburizer and carburization method using the same30 Dec 2021US 2021/0404047 A1Nippon Steel Corporation
- Process for preparation and use of inorganic markers for security identification/marking on explosives, fuses and ammunition after detonation and on firearms and metal projectiles, products obtained and process of inserting markers on explosives, fuses and ammunition and on firearms and metal projectiles4 Nov 2021US 2021/0340660 A1Meta - SoluçõEs Em SegurançA Ltda.
Most cited
By later US patents
- Surface hardened 300 series stainless steel15US 5,344,502 AThe Babcock & Wilcox Company · 1994
- Hardening of selected areas of an earth boring rockbit9US 4,660,444 ADresser Industries, Inc. · 1987
- Magnetic materials and processes for their production8US 5,478,411 AThe Provost, Fellows and Scholars of the College of the Holy and Undivided Trinity of Queen Elizabeth Near Dublin · 1995
- Method of carburizing the inner surface of a steel valve seat6US 4,035,204 ARobert Bosch GmbH · 1977
- Pack carburizing process for earth boring drill bits3US 4,643,051 AHughes Tool Company - USA · 1987