Y10T 137/7287
Liquid level responsive or maintaining systems
Y10T137/7287 (Liquid level responsive or maintaining systems) appears on 2,296 US grants and 899 published applications in this corpus.
Search patents in Y10T- Granted patents
- 2,296
- Published applications
- 899
- Assignees
- 1,074
- Inventors
- 3,315
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 49 | 0 |
| 1977 | 47 | 0 |
| 1978 | 48 | 0 |
| 1979 | 45 | 0 |
| 1980 | 53 | 0 |
| 1981 | 70 | 0 |
| 1982 | 59 | 0 |
| 1983 | 41 | 0 |
| 1984 | 45 | 0 |
| 1985 | 54 | 0 |
| 1986 | 66 | 0 |
| 1987 | 61 | 0 |
| 1988 | 57 | 0 |
| 1989 | 65 | 0 |
| 1990 | 44 | 0 |
| 1991 | 57 | 0 |
| 1992 | 45 | 0 |
| 1993 | 48 | 0 |
| 1994 | 60 | 0 |
| 1995 | 59 | 0 |
| 1996 | 52 | 0 |
| 1997 | 56 | 0 |
| 1998 | 57 | 0 |
| 1999 | 72 | 0 |
| 2000 | 68 | 0 |
| 2001 | 67 | 14 |
| 2002 | 42 | 36 |
| 2003 | 43 | 34 |
| 2004 | 40 | 38 |
| 2005 | 42 | 54 |
| 2006 | 33 | 38 |
| 2007 | 30 | 44 |
| 2008 | 20 | 56 |
| 2009 | 37 | 56 |
| 2010 | 36 | 82 |
| 2011 | 51 | 58 |
| 2012 | 62 | 59 |
| 2013 | 64 | 72 |
| 2014 | 79 | 68 |
| 2015 | 51 | 62 |
| 2016 | 42 | 28 |
| 2017 | 43 | 22 |
| 2018 | 43 | 26 |
| 2019 | 22 | 12 |
| 2020 | 20 | 16 |
| 2021 | 18 | 10 |
| 2022 | 12 | 6 |
| 2023 | 10 | 3 |
| 2024 | 3 | 2 |
| 2025 | 5 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- Y10T 137/7358By float controlled valve1,333
- Y10T 137/7313Control of outflow from tank304
- Y10T 137/7306Electrical characteristic sensing302
- Y10T 137/7303Control of both inflow and outflow of tank142
- Y10T 137/7339By weight of accumulated fluid130
- Y10T 137/7297With second diverse control110
- Y10T 137/731With control fluid connection at desired liquid level98
- Y10T 137/729Washing machine cycle control61
Recent patents
- Water flow shutoff system6 Oct 2026US 12,753,597 B1Liquified Solutions, LLC
- Flow control device24 Feb 2026US 12,560,950 B2Medincell
- Flow meter having a valve10 Feb 2026US 12,544,501 B2DEKA Products Limited Partneship
- System for controlling rain water flow23 Dec 2025US 12,503,857 B1
- Toilet fill valve with valve lock14 Oct 2025US 12,442,169 B2Danco, Inc.
- Tank overfill and pump runaway prevention for a fluid management system23 Jul 2026US 2026/0209026 A1Graco Minnesota Inc.
- Overfill prevention valve20 Nov 2025US 2025/0354623 A1Clay and Bailey Manufacturing Company
- System, method, and apparatus for monitoring, regulating, or controlling fluid flow19 Jun 2025US 2025/0195746 A1DEKA Products Limited Partnership
- Flow control device30 May 2024US 2024/0176370 A1Medincell
- Planetary gear system arrangement with auxiliary oil system4 Apr 2024US 2024/0110497 A1Rtx Corporation
Most cited
By later US patents
- Valveless liquid microswitch378US 5,726,404 AUniversity of Washington · 1998
- Highly automated agricultural production system352US 4,015,366 AAdvanced Decision Handling, Inc. · 1977
- Electrical appliance energy consumption control methods and electrical energy consumption systems257US 7,010,363 B2Battelle Memorial Institute · 2006
- Liquid supply apparatus202US 5,411,052 AFisher & Paykel Limited · 1995
- Automated bathroom193US 4,563,780 A1986