B01D 67/00111
Polymer pretreatment in the casting solutions
Official title: {Polymer pretreatment in the casting solutions}
B01D67/00111 (Polymer pretreatment in the casting solutions) appears on 181 US grants and 191 published applications in this corpus.
Search patents in B01D- Granted patents
- 181
- Published applications
- 191
- Assignees
- 160
- Inventors
- 628
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 2 | 3 |
| 2003 | 5 | 1 |
| 2004 | 1 | 3 |
| 2005 | 0 | 5 |
| 2006 | 1 | 3 |
| 2007 | 0 | 5 |
| 2008 | 4 | 9 |
| 2009 | 0 | 2 |
| 2010 | 4 | 4 |
| 2011 | 3 | 6 |
| 2012 | 6 | 3 |
| 2013 | 4 | 3 |
| 2014 | 4 | 5 |
| 2015 | 5 | 7 |
| 2016 | 2 | 5 |
| 2017 | 2 | 8 |
| 2018 | 6 | 13 |
| 2019 | 7 | 19 |
| 2020 | 5 | 21 |
| 2021 | 17 | 11 |
| 2022 | 11 | 14 |
| 2023 | 6 | 11 |
| 2024 | 9 | 14 |
| 2025 | 13 | 9 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Asymmetric membranes315US 4,629,563 ABrunswick Corporation · 1986
- Microfiltration membranes having high pore density and mixed isotropic and anisotropic structure148US 5,906,742 AUSF Filtration and Separations Group, Inc. · 1999
- Block copolymers131US 5,834,583 ACirce Biomedical, Inc. · 1998
- Dispersing casting of integral skinned highly asymmetric polymer membranes124US 4,774,039 ABrunswick Corporation · 1988
- Charge modified microporous membrane, process for charge modifying said membrane and process for filtration of fluid123US 4,473,474 AAMF Incorporated · 1984