F16K 37/0058
Optical means
Official title: {Optical means, e.g. light transmission, observation ports (F16K37/0075 takes precedence)}
F16K37/0058 (Optical means) appears on 226 US grants and 208 published applications in this corpus.
Search patents in F16K- Granted patents
- 226
- Published applications
- 208
- Assignees
- 195
- Inventors
- 532
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 11 | 0 |
| 2001 | 6 | 0 |
| 2002 | 4 | 3 |
| 2003 | 0 | 3 |
| 2004 | 4 | 1 |
| 2005 | 4 | 7 |
| 2006 | 2 | 4 |
| 2007 | 1 | 2 |
| 2008 | 2 | 3 |
| 2009 | 1 | 3 |
| 2010 | 2 | 1 |
| 2011 | 1 | 5 |
| 2012 | 4 | 4 |
| 2013 | 4 | 15 |
| 2014 | 6 | 8 |
| 2015 | 9 | 13 |
| 2016 | 8 | 12 |
| 2017 | 9 | 10 |
| 2018 | 12 | 10 |
| 2019 | 8 | 14 |
| 2020 | 7 | 14 |
| 2021 | 11 | 16 |
| 2022 | 18 | 13 |
| 2023 | 8 | 15 |
| 2024 | 19 | 12 |
| 2025 | 16 | 12 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Safety device for fluid ends11 Aug 2026US 12,704,426 B2Forum US, Inc.
- Check valve having a state indication system14 Jul 2026US 12,680,623 B2The Boeing Company
- Machine fluid condition monitoring system7 Jul 2026US 12,674,697 B2Luneta, LLC
- Methods and systems associated with a mount and an adapter for a sensor for fracturing operations6 Aug 2026US 2026/0227003 A1Commando Pressure Control, Inc.
- Triple redundancy assembly in process control systems18 Jun 2026US 2026/0169506 A1Rotex Automation Limited
- Indicator device and method of using the same21 May 2026US 2026/0139760 A1Max-Air Technology, Inc.
- Valve apparatus2 Apr 2026US 2026/0092649 A1Ckd Corporation
- Check valve having a state indication system19 Mar 2026US 2026/0078841 A1The Boeing Company
Most cited
By later US patents
- Voice activated liquid management system128US 6,317,717 B12001
- Valve position indicator105US 5,223,822 AStonel Corporation · 1993
- Medical valve having fluid flow indicia94US 5,135,026 A1992
- Pressure release valve assembly for pressure cooker81US 8,869,829 B22014
- Visual position indicator72US 5,957,158 AAutomatic Switch Company · 1999