B01D 21/32
Density control of clear liquid or sediment
Official title: Density control of clear liquid or sediment, e.g. optical control {; Control of physical properties}
B01D21/32 (Density control of clear liquid or sediment) appears on 153 US grants and 109 published applications in this corpus.
Search patents in B01D- Granted patents
- 153
- Published applications
- 109
- Assignees
- 117
- Inventors
- 323
- Latest grant
- 5 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 1 |
| 2002 | 3 | 4 |
| 2003 | 5 | 6 |
| 2004 | 5 | 3 |
| 2005 | 3 | 0 |
| 2006 | 2 | 3 |
| 2007 | 1 | 5 |
| 2008 | 2 | 3 |
| 2009 | 3 | 5 |
| 2010 | 2 | 7 |
| 2011 | 3 | 4 |
| 2012 | 6 | 0 |
| 2013 | 1 | 5 |
| 2014 | 1 | 4 |
| 2015 | 3 | 4 |
| 2016 | 1 | 3 |
| 2017 | 3 | 4 |
| 2018 | 1 | 5 |
| 2019 | 2 | 3 |
| 2020 | 4 | 12 |
| 2021 | 3 | 9 |
| 2022 | 10 | 9 |
| 2023 | 7 | 5 |
| 2024 | 9 | 4 |
| 2025 | 3 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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