B01F 35/833
Flow control by valves
Official title: {Flow control by valves, e.g. opening intermittently}
B01F35/833 (Flow control by valves) appears on 208 US grants and 210 published applications in this corpus.
Search patents in B01F- Granted patents
- 208
- Published applications
- 210
- Assignees
- 178
- Inventors
- 447
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 1 |
| 2003 | 5 | 7 |
| 2004 | 5 | 6 |
| 2005 | 2 | 16 |
| 2006 | 4 | 6 |
| 2007 | 4 | 5 |
| 2008 | 2 | 3 |
| 2009 | 6 | 5 |
| 2010 | 4 | 6 |
| 2011 | 1 | 1 |
| 2012 | 2 | 3 |
| 2013 | 5 | 8 |
| 2014 | 4 | 5 |
| 2015 | 2 | 12 |
| 2016 | 5 | 7 |
| 2017 | 13 | 7 |
| 2018 | 3 | 11 |
| 2019 | 5 | 15 |
| 2020 | 13 | 10 |
| 2021 | 7 | 11 |
| 2022 | 8 | 15 |
| 2023 | 14 | 10 |
| 2024 | 13 | 9 |
| 2025 | 6 | 24 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Resistivity adjustment device and resistivity adjustment method11 Aug 2026US 12,702,961 B2DIC Corporation
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- Device for incorporation of pulverulent materials, especially dust-explosive pulverulent materials, into a liquid, especially an inflammable liquid28 Jul 2026US 12,691,426 B2Sherwin-Williams Coatings Deutschland GmbH
- System, method, and network for controlling distribution of chemicals and fluids12 May 2026US 12,623,257 B2Sonny's HFI Holdings, LLC
- Premixing apparatus17 Sep 2026US 2026/0273486 A1Rinnai Corporation
- Method for a dynamic in-line mixing process19 Mar 2026US 2026/0077321 A1
- Batching method and system19 Mar 2026US 2026/0077325 A1Initech Co., Ltd.
- Batch-process gas mixer29 Jan 2026US 2026/0027528 A1
- Brine mixing systems and methods29 Jan 2026US 2026/0027531 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Gas mixing apparatus for respirator162US 5,544,674 AInfrasonics, Inc. · 1996
- Gas mixing apparatus for respirator158US 5,671,767 AInfrasonics, Inc. · 1997
- Method for continuously producing a flowable mixture106US 4,964,732 AMiteco AG · 1990
- Method for continuously blending chemical solutions101US 6,799,883 B1Air Liquide America Corporation · 2004
- Anesthetic gas control apparatus88US 4,345,612 ACitizen Watch Co., Ltd. · 1982