F16K 15/02
Check valves: with guided rigid valve members
Official title: with guided rigid valve members
F16K15/02 (Check valves: with guided rigid valve members) appears on 3,738 US grants and 3,223 published applications in this corpus.
Search patents in F16K- Granted patents
- 3,738
- Published applications
- 3,223
- Assignees
- 1,924
- Inventors
- 6,592
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 37 | 0 |
| 1977 | 38 | 0 |
| 1978 | 41 | 0 |
| 1979 | 29 | 0 |
| 1980 | 40 | 0 |
| 1981 | 54 | 0 |
| 1982 | 33 | 0 |
| 1983 | 34 | 0 |
| 1984 | 45 | 0 |
| 1985 | 49 | 0 |
| 1986 | 46 | 0 |
| 1987 | 52 | 0 |
| 1988 | 39 | 0 |
| 1989 | 67 | 0 |
| 1990 | 53 | 0 |
| 1991 | 51 | 0 |
| 1992 | 54 | 0 |
| 1993 | 46 | 0 |
| 1994 | 38 | 0 |
| 1995 | 29 | 0 |
| 1996 | 39 | 0 |
| 1997 | 33 | 0 |
| 1998 | 46 | 0 |
| 1999 | 41 | 0 |
| 2000 | 51 | 0 |
| 2001 | 54 | 26 |
| 2002 | 58 | 56 |
| 2003 | 68 | 88 |
| 2004 | 59 | 74 |
| 2005 | 52 | 96 |
| 2006 | 57 | 87 |
| 2007 | 53 | 65 |
| 2008 | 47 | 84 |
| 2009 | 39 | 82 |
| 2010 | 44 | 87 |
| 2011 | 41 | 70 |
| 2012 | 66 | 86 |
| 2013 | 70 | 114 |
| 2014 | 85 | 134 |
| 2015 | 91 | 136 |
| 2016 | 124 | 174 |
| 2017 | 146 | 257 |
| 2018 | 151 | 199 |
| 2019 | 230 | 219 |
| 2020 | 193 | 196 |
| 2021 | 184 | 181 |
| 2022 | 174 | 172 |
| 2023 | 159 | 170 |
| 2024 | 171 | 141 |
| 2025 | 156 | 135 |
| 2026 | 81 | 94 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Valued device for controlling vacuum in surgery1,387US 4,184,510 AFibra-Sonics, Inc. · 1980
- Heart valves having edge-guided occluders665US 4,373,216 AHemex, Inc. · 1983
- Prosthetic valve means for cardiovascular surgery627US 4,406,022 A1983
- Flow limiting throttle element475US 5,411,055 AMannesmann Aktiengesellschaft · 1995
- Low head to stem ratio poppet valve425US 9,309,978 B2Dresser-Rand Company · 2016