F16H 2055/325
Characterized by roughness or hardness of friction surface
Official title: {characterized by roughness or hardness of friction surface}
F16H2055/325 (Characterized by roughness or hardness of friction surface) appears on 19 US grants and 21 published applications in this corpus.
Search patents in F16H- Granted patents
- 19
- Published applications
- 21
- Assignees
- 15
- Inventors
- 32
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 4 |
| 2016 | 1 | 1 |
| 2017 | 4 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 2 | 3 |
| 2021 | 2 | 2 |
| 2022 | 1 | 1 |
| 2023 | 2 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Super charger components19 May 2026US 12,631,244 B2Zpe Licensing Inc.
- Super charger components28 Jan 2025US 12,209,649 B2Zpe Licensing Inc.
- Rack bar and steering apparatus10 Oct 2023US 11,781,633 B2Jtekt Corporation
- Super charger components13 Jun 2023US 11,674,585 B2Zpe Licensing Inc.
- High friction and wear resistant elevator sheave liner29 Nov 2022US 11,511,970 B2Otis Elevator Company
- Super charger components27 Aug 2026US 2026/0251210 A1Zpe Licensing Inc.
- Super charger components17 Apr 2025US 2025/0122929 A1Zpe Licensing Inc.
- Super charger components5 Oct 2023US 2023/0313874 A1Zpe Licensing Inc.
- High friction and wear resistant elevator sheave liner3 Feb 2022US 2022/0033228 A1Otis Elevator Company
- Super charger components2 Sep 2021US 2021/0270356 A1Zpe Licensing Inc.
Most cited
By later US patents
- Traction drive rotary assembly and process for producing rolling element thereof22US 6,629,906 B1Nissan Motor Co., Ltd. · 2003
- Super charger components15US 9,421,637 B2Zpe Licensing Inc. · 2016
- Super charger components14US 9,551,409 B2Zpe Licensing Inc. · 2017
- Super charger components12US 10,655,723 B2Zpe Licensing Inc. · 2020
- Hollow roller9US 4,916,981 AKoyo Seiko Co., Ltd. · 1990