F17C 2205/0335
Check-valves or non-return valves
F17C2205/0335 (Check-valves or non-return valves) appears on 628 US grants and 531 published applications in this corpus.
Search patents in F17C- Granted patents
- 628
- Published applications
- 531
- Assignees
- 370
- Inventors
- 1,242
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 9 | 0 |
| 1988 | 3 | 0 |
| 1989 | 12 | 0 |
| 1990 | 5 | 0 |
| 1991 | 9 | 0 |
| 1992 | 16 | 0 |
| 1993 | 11 | 0 |
| 1994 | 13 | 0 |
| 1995 | 17 | 0 |
| 1996 | 22 | 0 |
| 1997 | 17 | 0 |
| 1998 | 16 | 0 |
| 1999 | 19 | 0 |
| 2000 | 18 | 0 |
| 2001 | 10 | 2 |
| 2002 | 17 | 15 |
| 2003 | 15 | 20 |
| 2004 | 18 | 17 |
| 2005 | 16 | 20 |
| 2006 | 6 | 13 |
| 2007 | 8 | 10 |
| 2008 | 13 | 14 |
| 2009 | 7 | 14 |
| 2010 | 10 | 18 |
| 2011 | 4 | 11 |
| 2012 | 9 | 21 |
| 2013 | 14 | 15 |
| 2014 | 10 | 21 |
| 2015 | 10 | 24 |
| 2016 | 16 | 28 |
| 2017 | 21 | 25 |
| 2018 | 19 | 29 |
| 2019 | 20 | 27 |
| 2020 | 27 | 24 |
| 2021 | 19 | 26 |
| 2022 | 22 | 29 |
| 2023 | 19 | 43 |
| 2024 | 31 | 37 |
| 2025 | 28 | 23 |
| 2026 | 16 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System for recycling helium4 Aug 2026US 12,698,865 B2Commoditas, LLC
- Pressure reducing device30 Jun 2026US 12,669,220 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Supply tank for inflammable gas with protective cap30 Jun 2026US 12,669,221 B2Vomar Industries Inc.
- Injector for a gas reservoir, and reservoir equipped with such an injector16 Jun 2026US 12,655,945 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Device for protecting a device for supplying pressurised fluid26 May 2026US 12,638,138 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Liquefied-gas delivery system23 Jul 2026US 2026/0210499 A1
- Pressure tank26 Mar 2026US 2026/0085789 A1
- Gas supply device and gas supply method26 Mar 2026US 2026/0085791 A1Mitsubishi Heavy Industries, Ltd.
- Liquid delivery system19 Mar 2026US 2026/0078875 A1Eaton Intelligent Power Limited
- Gas delivery system for a pressurized gas cylinder and a quick locking assembly thereof8 Jan 2026US 2026/0009507 A1Ghotra Innovations Inc.
Most cited
By later US patents
- Self-contained mobile fueling station157US 6,786,245 B1Air Products and Chemicals, Inc. · 2004
- Oxygen concentrator107US 5,858,062 ALitton Systems, Inc. · 1999
- Transportable hydrogen refueling station106US 6,755,225 B1Quantum Fuel Systems Technologies Worldwide, Inc. · 2004
- Method and system for independently filling multiple canisters from cascaded storage stations96US 7,415,995 B2Scott Technologies, Inc. · 2008
- Control module for natural gas fuel supply for a vehicle90US 6,041,762 AImpco Technologies, Inc. · 2000