B01D 71/16
Cellulose acetate
B01D71/16 (Cellulose acetate) appears on 189 US grants and 188 published applications in this corpus.
Search patents in B01D- Granted patents
- 189
- Published applications
- 188
- Assignees
- 158
- Inventors
- 572
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 2 |
| 2003 | 3 | 6 |
| 2004 | 2 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 4 |
| 2007 | 2 | 2 |
| 2008 | 3 | 2 |
| 2009 | 1 | 4 |
| 2010 | 3 | 10 |
| 2011 | 4 | 3 |
| 2012 | 8 | 7 |
| 2013 | 4 | 9 |
| 2014 | 3 | 7 |
| 2015 | 7 | 22 |
| 2016 | 8 | 4 |
| 2017 | 11 | 14 |
| 2018 | 8 | 11 |
| 2019 | 5 | 12 |
| 2020 | 13 | 8 |
| 2021 | 9 | 8 |
| 2022 | 6 | 11 |
| 2023 | 2 | 8 |
| 2024 | 8 | 11 |
| 2025 | 7 | 10 |
| 2026 | 2 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Multicomponent membranes for gas separations355US 4,230,463 AMonsanto Company · 1980
- Membranes for absorbent packets341US 5,108,383 AAllied-Signal Inc. · 1992
- Paste, which can undergo screen printing for producing a porous polymer membrane for a biosensor154US 6,719,923 B2Inverness Medical Limited · 2004
- Haemodialyzer apparatus139US 4,212,744 AAsahi Medical Co., Ltd. · 1980
- Multi-layer membrane and the use thereof for the separation of liquid mixtures according to the pervaporation process50US 4,755,299 AGFT Ingenieurburo Fur Industrieanlagenbau · 1988