F16T 1/22
Of closed-hollow-body type
Official title: of closed-hollow-body type
F16T1/22 (Of closed-hollow-body type) appears on 85 US grants and 39 published applications in this corpus.
Search patents in F16T- Granted patents
- 85
- Published applications
- 39
- Assignees
- 38
- Inventors
- 91
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 0 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 0 | 0 |
| 2003 | 2 | 3 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 3 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 2 | 5 |
| 2019 | 4 | 3 |
| 2020 | 5 | 4 |
| 2021 | 3 | 3 |
| 2022 | 6 | 4 |
| 2023 | 4 | 1 |
| 2024 | 3 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Hydraulic valve9 Dec 2025US 12,492,567 B2Seko S.P.A.
- Condensate trap apparatus and buoyant body therefor17 Dec 2024US 12,169,045 B2Kyungdong Navien Co., Ltd.
- Valve device9 Apr 2024US 11,953,110 B2TLV Co., Ltd.
- Condensate trap6 Feb 2024US 11,892,196 B2Carrier Corporation
- Monitoring system21 Nov 2023US 11,821,583 B2ECO FIRST Co., Ltd.
- Hydraulic valve6 Mar 2025US 2025/0075522 A1Seko S.P.A.
- Valve device19 Oct 2023US 2023/0332708 A1TLV Co., Ltd.
- Condensate trap apparatus and buoyant body therefor6 Oct 2022US 2022/0316654 A1Kyungdong Navien Co., Ltd.
- Systems, Devices, and/or Methods for Managing Condensate25 Aug 2022US 2022/0268482 A1
- Discharge valve unit and fluid device12 May 2022US 2022/0146013 A1TLV Co., Ltd.
Most cited
By later US patents
- Float controlled valve30US 5,080,126 AR. P. Fedder Corporation · 1992
- Condensate trap on a condensing gas-fired furnace28US 4,856,550 ALennox Industries Inc. · 1989
- Leak proof, preloaded, high-biasing force float-operated over-center valve actuating mechanism26US 5,141,405 A1992
- Gas powered fluid pump with exhaust assist valve24US 5,938,409 ASpirax-Sarco Limited · 1999
- Condensate discharge device for combustion apparatus22US 4,627,460 AA. D. Smith Corporation · 1986