F16D 3/2237
Where the grooves are composed of radii and adjoining straight lines, i.e.
Official title: where the grooves are composed of radii and adjoining straight lines, i.e. undercut free [UF] type joints
F16D3/2237 (Where the grooves are composed of radii and adjoining straight lines, i.e.) appears on 198 US grants and 158 published applications in this corpus.
Search patents in F16D- Granted patents
- 198
- Published applications
- 158
- Assignees
- 50
- Inventors
- 244
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 9 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 8 | 2 |
| 2002 | 4 | 4 |
| 2003 | 5 | 8 |
| 2004 | 6 | 8 |
| 2005 | 1 | 12 |
| 2006 | 9 | 10 |
| 2007 | 4 | 5 |
| 2008 | 7 | 7 |
| 2009 | 11 | 17 |
| 2010 | 9 | 23 |
| 2011 | 14 | 8 |
| 2012 | 17 | 4 |
| 2013 | 11 | 6 |
| 2014 | 5 | 6 |
| 2015 | 4 | 4 |
| 2016 | 6 | 5 |
| 2017 | 4 | 1 |
| 2018 | 2 | 3 |
| 2019 | 1 | 6 |
| 2020 | 2 | 5 |
| 2021 | 3 | 4 |
| 2022 | 4 | 3 |
| 2023 | 4 | 1 |
| 2024 | 3 | 0 |
| 2025 | 3 | 2 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Constant-speed universal joint14 Oct 2025US 12,442,421 B2Jtekt Corporation
- Constant velocity joint with asymmetric opposed tracks25 Feb 2025US 12,234,864 B2Steering Solutions IP Holding Corporation
- Joint assembly with restriction feature25 Feb 2025US 12,234,865 B2Neapco Intellectual Property Holdings, LLC
- Constant velocity joint10 Dec 2024US 12,163,559 B2Neapco Intellectual Property Holdings, LLC
- Fixed type constant velocity universal joint6 Aug 2024US 12,055,188 B2Ntn Corporation
- Double offset constant velocity joint13 Aug 2026US 2026/0235167 A1Jtekt Corporation
- Inner joint member for a counter track joint4 Jun 2026US 2026/0153130 A1
- Constant velocity joint assembly14 May 2026US 2026/0132823 A1Hyundai Wia Corporation
- Constant velocity joint assembly14 May 2026US 2026/0132824 A1Hyundai Wia Corporation
- Symmetric double offset constant velocity joint19 Jun 2025US 2025/0198468 A1Korea Movenex Co., Ltd.
Most cited
By later US patents
- Wheel Bearing/constant velocity joint unit95US 4,893,960 ALohr & Bromkamp GmbH · 1990
- Constant velocity universal joint having high stress resistance78US 5,290,203 AGKN Automotive AG · 1994
- Constant velocity fixed joint with alternate sequential running grooves40US 5,221,233 AGKN Automotive AG · 1993
- Constant velocity ratio universal joint33US 4,968,287 AUni-Cardan Aktiengesellschaft · 1990
- Constant velocity joint with a connecting shaft32US 5,624,318 ALohr & Broomkamp GmbH · 1997