F17C 2221/031
Air
F17C2221/031 (Air) appears on 424 US grants and 412 published applications in this corpus.
Search patents in F17C- Granted patents
- 424
- Published applications
- 412
- Assignees
- 300
- Inventors
- 876
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 6 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 9 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 10 | 0 |
| 1996 | 13 | 0 |
| 1997 | 9 | 0 |
| 1998 | 13 | 0 |
| 1999 | 8 | 0 |
| 2000 | 10 | 0 |
| 2001 | 2 | 1 |
| 2002 | 13 | 5 |
| 2003 | 11 | 4 |
| 2004 | 6 | 13 |
| 2005 | 6 | 5 |
| 2006 | 8 | 14 |
| 2007 | 7 | 12 |
| 2008 | 5 | 7 |
| 2009 | 1 | 9 |
| 2010 | 6 | 9 |
| 2011 | 8 | 15 |
| 2012 | 5 | 11 |
| 2013 | 9 | 14 |
| 2014 | 8 | 19 |
| 2015 | 16 | 34 |
| 2016 | 14 | 25 |
| 2017 | 8 | 22 |
| 2018 | 17 | 38 |
| 2019 | 26 | 19 |
| 2020 | 19 | 15 |
| 2021 | 15 | 20 |
| 2022 | 12 | 22 |
| 2023 | 13 | 25 |
| 2024 | 18 | 22 |
| 2025 | 18 | 20 |
| 2026 | 6 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Nitrox-mixtures production machine1 Sep 2026US 12,723,714 B2Nardi Compressori S.R.L.
- Air bag air-inflating and air-pumping device16 Jun 2026US 12,655,944 B2Dongguan One-Third Sleep Technology Co., Ltd
- Gas storage accumulators for spacecraft26 May 2026US 12,637,237 B2Hamilton Sundstrand Space Systems International, Inc.
- Nitrogen compression system for leakage test on gas pipeline used for engine and vessel including the same28 Apr 2026US 12,613,004 B2Daewoo Shipbuilding & Marine Engineering Co., Ltd.
- Combined high pressure receptacles21 Apr 2026US 12,607,301 B2Storage Drop Ltd
- Inflating Device8 Oct 2026US 2026/0309281 A1
- Gas storage container management system and management method, and frame30 Jul 2026US 2026/0218859 A1Atomis Inc.
- Underground Gas Storage Device for Compressed Air Energy Storage and Construction Method Thereof2 Jul 2026US 2026/0185662 A1Shanghai Investigation, Design & Research Institute Co., Ltd.
- Compressor With Housing-Integrated Air Storage Device11 Jun 2026US 2026/0160387 A1
- Portable, modular air delivery system for self-contained breathing apparatus refilling4 Jun 2026US 2026/0153193 A1
Most cited
By later US patents
- Container system for pressurized fluids178US 6,047,860 ASanders Technology, Inc. · 2000
- Container system for pressurized fluids167US 6,116,464 ASanders Technology, Inc. · 2000
- Oxygen concentrator107US 5,858,062 ALitton Systems, Inc. · 1999
- Compressed-air storage installation100US 4,147,204 ABBC Brown, Boveri & Company, Limited · 1979
- Cryogenic device operable in single or dual phase with a range of nozzle sizes and method of using the same96US 4,376,376 A1983