B01D 71/72
Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
Official title: Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of the groups B01D71/46 - B01D71/70 {and B01D71/701 - B01D71/702}
B01D71/72 (Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds) appears on 127 US grants and 105 published applications in this corpus.
Search patents in B01D- Granted patents
- 127
- Published applications
- 105
- Assignees
- 110
- Inventors
- 368
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 4 |
| 2003 | 5 | 2 |
| 2004 | 1 | 4 |
| 2005 | 2 | 3 |
| 2006 | 1 | 5 |
| 2007 | 2 | 3 |
| 2008 | 3 | 2 |
| 2009 | 1 | 2 |
| 2010 | 4 | 3 |
| 2011 | 3 | 2 |
| 2012 | 2 | 4 |
| 2013 | 4 | 2 |
| 2014 | 3 | 5 |
| 2015 | 2 | 6 |
| 2016 | 3 | 2 |
| 2017 | 8 | 2 |
| 2018 | 2 | 1 |
| 2019 | 2 | 6 |
| 2020 | 1 | 6 |
| 2021 | 4 | 5 |
| 2022 | 5 | 7 |
| 2023 | 5 | 8 |
| 2024 | 11 | 12 |
| 2025 | 3 | 5 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Porous membranes for high pressure filtration7 Jul 2026US 12,673,303 B2Syensqo Specialty Polymers USA, LLC
- Alumina-supported polypyrrole modified oxidized graphitic carbon nitride membrane2 Jun 2026US 12,643,078 B1King Fahd University of Petroleum and Minerals
- Materials for reducing acids from liquid phases2 Jun 2026US 12,643,971 B2The Board of Trustees of The University of Alabama
- Composite membrane comprising highly permeable gutter layer and method for preparing same23 Sep 2025US 12,420,240 B2Korea Research Institute of Chemical Technology
- Crosslinked polyphosphazene blends for gas separation membranes1 Jul 2025US 12,344,713 B2Energy, United States Department of
- Materials for reducing acids from liquid phases10 Sep 2026US 2026/0265434 A1The Board of Trustees of The University of Alabama
- Norbornyl benzocyclobutene ladder polymer composite membranes for fluid separation6 Aug 2026US 2026/0225046 A1Osmoses Inc.
- Ladder polymers and improved methods of making the same28 May 2026US 2026/0146125 A1Osmoses Inc.
- Co2 purification with electroactive polymers13 Nov 2025US 2025/0345757 A1Twelve Benefit Corporation
- Diversity-oriented polymers of intrinsic microporosity and uses thereof24 Jul 2025US 2025/0236705 A1The Regents of the University of California
Most cited
By later US patents
- Electrochemical biosensors332US 5,776,324 AEncelle, Inc. · 1998
- Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups123US 4,704,324 AThe Dow Chemical Company · 1987
- Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups105US 4,797,187 AThe Dow Chemical Company · 1989
- Gas separations utilizing glassy polymer membranes at sub-ambient temperatures80US 5,837,032 AThe Cynara Company · 1998
- Method for producing a selectively permeable separation module62US 6,036,030 ABechtel BWXT Idaho, LLC · 2000