F16D 25/0635
With flat friction surfaces
Official title: with flat friction surfaces, e.g. discs
F16D25/0635 (With flat friction surfaces) appears on 1,534 US grants and 1,364 published applications in this corpus.
Search patents in F16D- Granted patents
- 1,534
- Published applications
- 1,364
- Assignees
- 364
- Inventors
- 2,557
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 12 | 0 |
| 1978 | 5 | 0 |
| 1979 | 8 | 0 |
| 1980 | 6 | 0 |
| 1981 | 11 | 0 |
| 1982 | 8 | 0 |
| 1983 | 12 | 0 |
| 1984 | 17 | 0 |
| 1985 | 5 | 0 |
| 1986 | 13 | 0 |
| 1987 | 15 | 0 |
| 1988 | 9 | 0 |
| 1989 | 19 | 0 |
| 1990 | 22 | 0 |
| 1991 | 14 | 0 |
| 1992 | 9 | 0 |
| 1993 | 10 | 0 |
| 1994 | 8 | 0 |
| 1995 | 9 | 0 |
| 1996 | 14 | 0 |
| 1997 | 23 | 0 |
| 1998 | 14 | 0 |
| 1999 | 25 | 0 |
| 2000 | 23 | 0 |
| 2001 | 18 | 9 |
| 2002 | 32 | 19 |
| 2003 | 36 | 37 |
| 2004 | 28 | 36 |
| 2005 | 22 | 48 |
| 2006 | 32 | 58 |
| 2007 | 35 | 59 |
| 2008 | 24 | 73 |
| 2009 | 20 | 56 |
| 2010 | 34 | 56 |
| 2011 | 38 | 35 |
| 2012 | 45 | 56 |
| 2013 | 56 | 47 |
| 2014 | 56 | 68 |
| 2015 | 67 | 58 |
| 2016 | 55 | 69 |
| 2017 | 55 | 107 |
| 2018 | 86 | 109 |
| 2019 | 95 | 67 |
| 2020 | 102 | 85 |
| 2021 | 90 | 62 |
| 2022 | 68 | 66 |
| 2023 | 46 | 25 |
| 2024 | 37 | 33 |
| 2025 | 34 | 16 |
| 2026 | 6 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Rear wheel drive clutch control system of work vehicle15 Sep 2026US 12,734,879 B2Deere & Company
- Electric traction axle/beam15 Sep 2026US 12,736,115 B2Fpt Industrial S.P.A.
- Transmission, in particular for a motor vehicle15 Sep 2026US 12,736,124 B2Mercedes-Benz Group AG
- Compact multi-function clutch8 Sep 2026US 12,729,736 B2Pt Tech, LLC
- Gear assembly for a square baler12 May 2026US 12,622,360 B2Usines CLAAS France S.A.S
- High-pressure hydraulic clutch cooling system for work vehicles30 Jul 2026US 2026/0218761 A1Deere & Company
- Friction disc, multiplate clutch, transmission, and work machine23 Jul 2026US 2026/0210412 A1Komatsu Ltd.
- Torque converter2 Jul 2026US 2026/0185591 A1Circle D Specialties, LLC
- Rear wheel drive clutch control system of work vehicle25 Jun 2026US 2026/0175678 A1Deere & Company
- Transmission, in Particular for a Motor Vehicle25 Jun 2026US 2026/0177140 A1Mercedes-Benz Group AG
Most cited
By later US patents
- Power transmission system in a hybrid vehicle90US 5,562,565 AKabushikikaisha Equos Research · 1996
- Power transmission79US 4,732,253 AMitsubishi Jidosha Kogyo Kabushiki Kaisha · 1988
- Tandem type hydraulic clutch system62US 5,662,198 AHonda Giken Kogyo Kabushiki Kaisha · 1997
- Pressure actuated multi-disk clutch58US 5,538,121 ADeere & Company · 1996
- Controlled cooling apparatus for torque transfer devices57US 5,495,927 AGeneral Motors Corporation · 1996