C23C 8/20
Carburising
C23C8/20 (Carburising) appears on 522 US grants and 584 published applications in this corpus.
Search patents in C23C- Granted patents
- 522
- Published applications
- 584
- Assignees
- 344
- Inventors
- 1,430
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 1 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 9 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 9 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 10 | 0 |
| 1998 | 7 | 0 |
| 1999 | 8 | 0 |
| 2000 | 11 | 0 |
| 2001 | 10 | 2 |
| 2002 | 7 | 9 |
| 2003 | 12 | 24 |
| 2004 | 4 | 22 |
| 2005 | 6 | 18 |
| 2006 | 12 | 31 |
| 2007 | 9 | 23 |
| 2008 | 13 | 27 |
| 2009 | 9 | 17 |
| 2010 | 13 | 14 |
| 2011 | 11 | 16 |
| 2012 | 17 | 33 |
| 2013 | 16 | 23 |
| 2014 | 13 | 22 |
| 2015 | 11 | 32 |
| 2016 | 28 | 45 |
| 2017 | 28 | 29 |
| 2018 | 19 | 27 |
| 2019 | 31 | 23 |
| 2020 | 25 | 27 |
| 2021 | 26 | 34 |
| 2022 | 15 | 27 |
| 2023 | 15 | 17 |
| 2024 | 21 | 12 |
| 2025 | 13 | 13 |
| 2026 | 4 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for producing a screw, and screw2 Jun 2026US 12,644,162 B2EJOT GmbH & Co. KG
- Method and device for producing direct reduced metal7 Apr 2026US 12,595,521 B2Greeniron H2 AB
- Variable diffusion carburizing method17 Feb 2026US 12,553,118 B2GKN Sinter Metals, LLC
- Carburized bearing6 Jan 2026US 12,516,698 B2Jtekt Corporation
- Steel25 Nov 2025US 12,480,190 B2Jtekt Corporation
- Method for calculating carbon concentration distribution in pulse carburizing process20 Aug 2026US 2026/0242923 A1Beijing Research Institute of Mechanical & Electrical Technology Co., Ltd. Cam
- Ceramic coating13 Aug 2026US 2026/0234782 A1
- Mechanical component and method for manufacturing mechanical component13 Aug 2026US 2026/0235197 A1Komatsu Ltd.
- Method for preparing one or multiple large-area continuous graphene monolayers and structure prepared thereby16 Jul 2026US 2026/0201594 A1LEAP Semiconductor Corp.
- Method for preparing epitaxial structure and epitaxial structure prepared thereby16 Jul 2026US 2026/0201595 A1LEAP Semiconductor Corp.
Most cited
By later US patents
- Cemented carbide body used preferably for rock drilling and mineral cutting171US 4,743,515 ASantrade Ltd. · 1988
- Thermal flux processing by scanning133US 6,987,240 B2APPLIED Materials.Inc. · 2006
- Cemented carbide body with a binder phase gradient and method of making the same60US 4,820,482 ASantrade Ltd. · 1989
- Sintered body for chip forming machining59US 4,843,039 ASantrade Ltd. · 1989
- Thermal flux processing by scanning57US 7,005,601 B2APPLIED Materials.Inc. · 2006