F16C 2223/00
Surface treatments
Official title: Surface treatments; Hardening; Coating
F16C2223/00 (Surface treatments) appears on 765 US grants and 912 published applications in this corpus.
Search patents in F16C- Granted patents
- 765
- Published applications
- 912
- Assignees
- 398
- Inventors
- 2,014
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 3 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 7 | 0 |
| 1991 | 3 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 12 | 0 |
| 2001 | 4 | 2 |
| 2002 | 8 | 9 |
| 2003 | 8 | 11 |
| 2004 | 4 | 14 |
| 2005 | 5 | 13 |
| 2006 | 2 | 16 |
| 2007 | 12 | 28 |
| 2008 | 4 | 18 |
| 2009 | 10 | 32 |
| 2010 | 12 | 29 |
| 2011 | 14 | 14 |
| 2012 | 18 | 18 |
| 2013 | 15 | 42 |
| 2014 | 27 | 37 |
| 2015 | 27 | 36 |
| 2016 | 32 | 63 |
| 2017 | 39 | 54 |
| 2018 | 45 | 43 |
| 2019 | 46 | 62 |
| 2020 | 41 | 67 |
| 2021 | 42 | 59 |
| 2022 | 54 | 64 |
| 2023 | 49 | 50 |
| 2024 | 47 | 54 |
| 2025 | 37 | 34 |
| 2026 | 29 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of coating metallic component of a rolling-element bearing or a plain bearing22 Sep 2026US 12,742,243 B2Aktiebolaget Skf
- Surface-hardened, rotationally symmetrical workpiece, hardening method and hardening apparatus1 Sep 2026US 12,723,286 B2Walzengiesserei Coswig GmbH
- Electric vehicle drive motor bearing assembly25 Aug 2026US 12,716,450 B2JTEKT Bearings North America LLC
- Bearing component25 Aug 2026US 12,716,454 B2Aktiebolaget Skf
- Rolling bearing with electrically insulating coating30 Jun 2026US 12,669,147 B2Aktiebolaget Skf
- Wheel hub unit with noise reducing features1 Oct 2026US 2026/0296100 A1
- Deep Groove Ball Bearing and Arc-Shaped Roller Assembly1 Oct 2026US 2026/0298288 A1
- One-step carbo-nitro-austempering process for forming steel bearings10 Sep 2026US 2026/0265851 A1GM Global Technology Operations LLC
- Roller hydraulic valve lifter bearing10 Sep 2026US 2026/0266204 A1Roller Bearing Company of America, Inc.
- Magnetic levitation device and pump unit10 Sep 2026US 2026/0266292 A1Levitronix LLC
Most cited
By later US patents
- Wear-resistant bearing material and a process for making it65US 3,941,903 AUnion Carbide Corporation · 1976
- Sliding bearing and manufacturing method thereof48US 6,086,257 A2000
- Composite powder and method for forming a self-lubricating composite coating and self-lubricating components formed thereby42US 5,763,106 AHino Motors, Ltd. · 1998
- Bearing with improved wear resistance and method for making same40US 6,117,493 ANorthmonte Partners, L.P. · 2000
- Bearing surface with improved wear resistance and method for making same39US 6,582,126 B2Northmonte Partners, L.P. · 2003