C23C 8/24
Nitriding
C23C8/24 (Nitriding) appears on 637 US grants and 797 published applications in this corpus.
Search patents in C23C- Granted patents
- 637
- Published applications
- 797
- Assignees
- 439
- Inventors
- 1,864
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 8 | 0 |
| 1994 | 14 | 0 |
| 1995 | 12 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 3 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 3 |
| 2002 | 11 | 17 |
| 2003 | 17 | 11 |
| 2004 | 12 | 15 |
| 2005 | 5 | 13 |
| 2006 | 3 | 26 |
| 2007 | 4 | 17 |
| 2008 | 5 | 16 |
| 2009 | 6 | 17 |
| 2010 | 14 | 17 |
| 2011 | 7 | 17 |
| 2012 | 9 | 30 |
| 2013 | 19 | 29 |
| 2014 | 16 | 33 |
| 2015 | 13 | 48 |
| 2016 | 21 | 65 |
| 2017 | 29 | 58 |
| 2018 | 48 | 40 |
| 2019 | 50 | 40 |
| 2020 | 45 | 40 |
| 2021 | 43 | 58 |
| 2022 | 32 | 58 |
| 2023 | 30 | 34 |
| 2024 | 47 | 36 |
| 2025 | 30 | 30 |
| 2026 | 5 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Orthopedic implants with increased hardness and increased depth of hardness and method of making19 May 2026US 12,629,449 B2Waldemar Link GmbH & Co. KG
- Processing method and processing apparatus for metal component19 May 2026US 12,630,914 B2Parker Netsushori Kogyo K.K.
- Steel sheet and method of manufacturing a steel sheet for packaging10 Feb 2026US 12,545,973 B2thyssenkrupp Rasselstein GmbH
- Plasma processing with tunable nitridation3 Feb 2026US 12,540,384 B2APPLIED Materials.Inc.
- Rolling member and rolling bearing13 Jan 2026US 12,523,255 B2Ntn Corporation
- Orthopedic implants with increased hardness and increased depth of hardness and method of making17 Sep 2026US 2026/0273134 A1Waldemar Link GmbH & Co. KG
- Steel product and method for modifying steel product17 Sep 2026US 2026/0275486 A1Sumitomo Heavy Industries, Ltd.
- Method for nitriding a steel3 Sep 2026US 2026/0258544 A1Safran Transmission Systems
- High-magnetic-induction grain-oriented silicon steel with excellent surface and preparation method therefor27 Aug 2026US 2026/0250810 A1Shougang Zhixin Electromagnetic Materials (Qian'an) Co., Ltd.
- Plasma enhanced vapor deposition process and method for forming an elemental antimony film on a substrate27 Aug 2026US 2026/0250837 A1Tokyo Electron Limited
Most cited
By later US patents
- Ultrasonic scalpel blade and methods of application489US 5,263,957 AUltracision, Inc. · 1993
- Titanium alloy blade coupler coated with nickel-chrome for ultrasonic scalpel442US 5,167,725 AUltracision, Inc. · 1992
- Titanium powder containing solid-soluted nitrogen, titanium material, and method for producing titanium powder containing solid-soluted nitrogen117US 10,213,837 B2Hi-Lex Corporation · 2019
- Expandable locking thread joint100US 6,619,696 B2Baker Hughes Incorporated · 2003
- Method of surface hardening orthopedic implant devices65US 5,192,323 ABristol-Myers Squibb Company · 1993