F16C 2208/32
Polytetrafluorethylene [ptfe]
Official title: Polytetrafluorethylene [PTFE] (F16C2208/58 takes precedence)
F16C2208/32 (Polytetrafluorethylene [ptfe]) appears on 231 US grants and 261 published applications in this corpus.
Search patents in F16C- Granted patents
- 231
- Published applications
- 261
- Assignees
- 162
- Inventors
- 607
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 2 |
| 2002 | 3 | 2 |
| 2003 | 2 | 6 |
| 2004 | 1 | 2 |
| 2005 | 2 | 3 |
| 2006 | 1 | 6 |
| 2007 | 2 | 2 |
| 2008 | 2 | 5 |
| 2009 | 0 | 2 |
| 2010 | 3 | 5 |
| 2011 | 5 | 7 |
| 2012 | 7 | 8 |
| 2013 | 3 | 8 |
| 2014 | 6 | 15 |
| 2015 | 8 | 23 |
| 2016 | 11 | 20 |
| 2017 | 15 | 14 |
| 2018 | 14 | 15 |
| 2019 | 11 | 14 |
| 2020 | 15 | 22 |
| 2021 | 13 | 20 |
| 2022 | 12 | 17 |
| 2023 | 16 | 12 |
| 2024 | 13 | 12 |
| 2025 | 14 | 15 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cage for rolling bearing and rolling bearing6 Oct 2026US 12,753,799 B2Japan Aerospace Exploration Agency
- Sliding member29 Sep 2026US 12,747,753 B2Daido Metal Company Ltd.
- Rolling bearing and method of manufacturing same21 Apr 2026US 12,607,228 B2Aktiebolaget Skf
- Rolling bearing and method of manufacturing same14 Apr 2026US 12,601,374 B2Aktiebolaget Skf
- Rolling bearing and method of manufacturing same14 Apr 2026US 12,601,376 B2Aktiebolaget Skf
- Self-lubricating universal joint27 Aug 2026US 2026/0251185 A1Array Tech, Inc.
- Seal arrangement16 Jul 2026US 2026/0201955 A1Schaeffler Technologies AG & Co. KG
- Bearing assembly11 Jun 2026US 2026/0160295 A1Safran Aircraft Engines
- Wear resistant bearing system5 Mar 2026US 2026/0063170 A1Roller Bearing Company of America, Inc.
- Bushing With Integrated Rotary Seal25 Dec 2025US 2025/0389298 A1Pullman Incorporated
Most cited
By later US patents
- Catheter pump211US 8,597,170 B2The Penn State Research Foundation · 2013
- Collagen sponge131US 4,412,947 ASeton Company · 1983
- Dry bearing47US 4,582,368 ANDC Company, Ltd. · 1986
- Composite ball and socket bearing with convex outer surface41US 5,265,965 ARexnord Inc. · 1993
- Sliding bearing material41US 5,498,654 ATaiho Kogyo Co., Ltd. · 1996