F05C 2225/04
Ptfe [polytetrafluorethylene]
Official title: PTFE [PolyTetraFluorEthylene]
F05C2225/04 (Ptfe [polytetrafluorethylene]) appears on 330 US grants and 165 published applications in this corpus.
Search patents in F05C- Granted patents
- 330
- Published applications
- 165
- Assignees
- 219
- Inventors
- 744
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 9 | 0 |
| 1990 | 2 | 0 |
| 1991 | 10 | 0 |
| 1992 | 14 | 0 |
| 1993 | 13 | 0 |
| 1994 | 9 | 0 |
| 1995 | 11 | 0 |
| 1996 | 15 | 0 |
| 1997 | 21 | 0 |
| 1998 | 22 | 0 |
| 1999 | 22 | 0 |
| 2000 | 12 | 0 |
| 2001 | 11 | 3 |
| 2002 | 9 | 11 |
| 2003 | 7 | 14 |
| 2004 | 11 | 11 |
| 2005 | 5 | 10 |
| 2006 | 2 | 8 |
| 2007 | 6 | 15 |
| 2008 | 4 | 12 |
| 2009 | 3 | 7 |
| 2010 | 8 | 7 |
| 2011 | 3 | 4 |
| 2012 | 7 | 6 |
| 2013 | 4 | 4 |
| 2014 | 2 | 6 |
| 2015 | 3 | 7 |
| 2016 | 5 | 5 |
| 2017 | 3 | 6 |
| 2018 | 3 | 3 |
| 2019 | 2 | 5 |
| 2020 | 5 | 5 |
| 2021 | 3 | 3 |
| 2022 | 3 | 4 |
| 2023 | 4 | 2 |
| 2024 | 3 | 2 |
| 2025 | 1 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Screw pump and its components24 Feb 2026US 12,560,167 B2Illinois Tool Works Inc.
- Systems and methods related to fluid pumping4 Mar 2025US 12,239,944 B2
- Refrigeration cycle apparatus10 Sep 2024US 12,085,318 B2Daikin Industries, Ltd.
- Scroll pump having a biasing apparatus for axially movable fixed and orbiting scrolls against each other via first and second pads that formed material from fixed and orbiting scrolls30 Jul 2024US 12,049,891 B2Edwards Limited
- Scroll pump with a plurality of bellows sealing a plurality of adjustment members2 Jul 2024US 12,025,128 B2Edwards Limited
- Double diaphragm pump with improved plain bearing27 Aug 2026US 2026/0251134 A1Lutz Pumpen GmbH
- Screw Pump and its Components14 May 2026US 2026/0132787 A1Illinois Tool Works Inc.
- Pressure boosting pump and hydrogen supply system18 Dec 2025US 2025/0383047 A1Mitsubishi Heavy Industries, Ltd.
- Systems and methods related to fluid pumping20 Nov 2025US 2025/0352962 A1Plas-Tech Engineering, Inc.
- Scroll compressor and method for producing eccentric bush necessary for scroll compressor17 Apr 2025US 2025/0122874 A1
Most cited
By later US patents
- Disposable ambulatory microprocessor controlled volumetric pump249US 5,807,075 ASarcos Corp. · 1998
- Reed valve for a pump117US 6,116,866 AKasei Optonix, Ltd. · 2000
- One-piece composite lip seal93US 5,163,692 AFuron Company · 1992
- Composite diaphragm for diaphragm pumps84US 6,877,419 B2ULMAN Dichtungstechnik GmbH · 2005
- Selectively bonded pump diaphragm80US 6,145,430 AIngersoll-Rand Company · 2000