B01D 27/106
Anti-leakage or anti-return valves
Official title: {Anti-leakage or anti-return valves}
B01D27/106 (Anti-leakage or anti-return valves) appears on 151 US grants and 137 published applications in this corpus.
Search patents in B01D- Granted patents
- 151
- Published applications
- 137
- Assignees
- 92
- Inventors
- 312
- Latest grant
- 8 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 1 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 5 |
| 2003 | 2 | 3 |
| 2004 | 2 | 5 |
| 2005 | 3 | 9 |
| 2006 | 1 | 8 |
| 2007 | 2 | 10 |
| 2008 | 1 | 8 |
| 2009 | 1 | 10 |
| 2010 | 6 | 5 |
| 2011 | 3 | 4 |
| 2012 | 7 | 6 |
| 2013 | 4 | 7 |
| 2014 | 6 | 2 |
| 2015 | 6 | 7 |
| 2016 | 2 | 9 |
| 2017 | 7 | 9 |
| 2018 | 5 | 5 |
| 2019 | 3 | 3 |
| 2020 | 2 | 10 |
| 2021 | 3 | 1 |
| 2022 | 4 | 1 |
| 2023 | 5 | 8 |
| 2024 | 2 | 1 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
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