B01D 71/301
Polyvinylchloride
Official title: {Polyvinylchloride}
B01D71/301 (Polyvinylchloride) appears on 52 US grants and 63 published applications in this corpus.
Search patents in B01D- Granted patents
- 52
- Published applications
- 63
- Assignees
- 54
- Inventors
- 185
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 1 | 3 |
| 2012 | 2 | 3 |
| 2013 | 3 | 3 |
| 2014 | 1 | 0 |
| 2015 | 2 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 3 |
| 2018 | 2 | 7 |
| 2019 | 5 | 4 |
| 2020 | 3 | 3 |
| 2021 | 5 | 11 |
| 2022 | 1 | 4 |
| 2023 | 4 | 5 |
| 2024 | 4 | 2 |
| 2025 | 1 | 0 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cation exchange membrane and method for producing same1 Sep 2026US 12,722,125 B2Astom Corporation
- Microporous membranes, underlayment, roofing, flashing, wrap, and methods for making and using the same14 Jul 2026US 12,678,741 B2Daramic, LLC
- Method for improving the airtightness of buildings using a biopolymer-based membrane16 Jun 2026US 12,654,139 B2Saint-Gobain Isover
- Metal-organic framework material separation membrane, preparation method therefor, and use thereof21 Apr 2026US 12,605,678 B2Beijing Research Institute of Chemical Industry, China Petroleum & Chemical Corporation
- Bipolar membrane10 Mar 2026US 12,569,812 B2Astom Corporation
- Compositions for preparing membranes from polymer solutions23 Jul 2026US 2026/0208118 A1The Lubrizol Corporation
- Necklace-shaped nanofiber hybrid membrane for simultaneous removal of particulate matter and sulfides and method for preparing the same26 Mar 2026US 2026/0084118 A1Gwangju Institute of Science and Technology
- Method for obtaining a catalytic membrane, catalytic membrane obtained and uses thereof12 Mar 2026US 2026/0070025 A1Universidad De Murcia
- Carbon molecular sieve membranes and methods for using the same26 Feb 2026US 2026/0054230 A1Dow Global Technologies LLC
- Anion exchange membrane and method for producing the same6 Jun 2024US 2024/0181403 A1Astom Corporation
Most cited
By later US patents
- Apparatus, membranes and methods for removing organic compounds from a biological fluid46US 6,099,734 ABaxter International Inc. · 2000
- Separation procedure37US 3,950,247 AMonsanto Company · 1976
- Method of manufacturing hollow fiber25US 4,342,711 ANippon Zeon Co., Ltd. · 1982
- Highly conductive ordered ion exchange membranes14US 7,740,967 B2Ben-Gurion University of the Negev Research and Development Authority · 2010
- Anti-thrombogenic blood treating system12US 5,254,249 AToray Industries, Inc. · 1993