B01D 67/0093
Chemical modification
Official title: {Chemical modification}
B01D67/0093 (Chemical modification) appears on 1,011 US grants and 1,055 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,011
- Published applications
- 1,055
- Assignees
- 621
- Inventors
- 2,867
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 10 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 10 | 0 |
| 1987 | 22 | 0 |
| 1988 | 15 | 0 |
| 1989 | 34 | 0 |
| 1990 | 32 | 0 |
| 1991 | 39 | 0 |
| 1992 | 22 | 0 |
| 1993 | 24 | 0 |
| 1994 | 15 | 0 |
| 1995 | 10 | 0 |
| 1996 | 13 | 0 |
| 1997 | 13 | 0 |
| 1998 | 16 | 0 |
| 1999 | 14 | 0 |
| 2000 | 15 | 0 |
| 2001 | 12 | 3 |
| 2002 | 18 | 20 |
| 2003 | 16 | 28 |
| 2004 | 14 | 38 |
| 2005 | 9 | 31 |
| 2006 | 18 | 37 |
| 2007 | 14 | 34 |
| 2008 | 15 | 35 |
| 2009 | 19 | 32 |
| 2010 | 22 | 43 |
| 2011 | 19 | 48 |
| 2012 | 22 | 42 |
| 2013 | 29 | 36 |
| 2014 | 36 | 43 |
| 2015 | 25 | 35 |
| 2016 | 30 | 45 |
| 2017 | 24 | 39 |
| 2018 | 37 | 39 |
| 2019 | 34 | 58 |
| 2020 | 41 | 59 |
| 2021 | 41 | 53 |
| 2022 | 35 | 63 |
| 2023 | 39 | 52 |
| 2024 | 36 | 55 |
| 2025 | 46 | 43 |
| 2026 | 21 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of forming a cross-linked polymeric membrane29 Sep 2026US 12,746,516 B2Seppure Pte Ltd
- Surface-treated porous materials having filtration properties and methods of preparing them18 Aug 2026US 12,708,879 B2Aculon, Inc.
- Semiconductive and proton-conductive porous hydrogen-bonded frameworks4 Aug 2026US 12,697,593 B2Technische UniversitäT Berlin
- Method for preparing a novel guanidine-based composite nanofiltration flat-sheet membrane21 Jul 2026US 12,685,969 B2Tongji University
- Method for post-treating catalyst coated membranes21 Jul 2026US 12,685,970 B2Uop LLC
- Treated microporous membrane24 Sep 2026US 2026/0284603 A1PPG Industries Ohio, Inc.
- Hollow fiber and a process for preparation thereof10 Sep 2026US 2026/0264024 A1
- Mil-125-nh2 metal organic framework nanocomposite membrane for treating oily wastewater and a method of preparation thereof10 Sep 2026US 2026/0264025 A1King Fahd University of Petroleum and Minerals
- Dual-layer hollow fibre membrane27 Aug 2026US 2026/0249249 A1Divigas Pet Ltd
- Purification process of ethyl formate27 Aug 2026US 2026/0249251 A1Taicang Hushi Reagent Co., Ltd.
Most cited
By later US patents
- Multicomponent membranes for gas separations355US 4,230,463 AMonsanto Company · 1980
- Plasma concentrate and tissue sealant methods and apparatuses for making concentrated plasma and/or tissue sealant316US 5,585,007 APlasmaseal LLC · 1996
- Novel protein-immobilizing hydrophobic polymeric membrane, process for producing same and apparatus employing same285US 3,966,580 AUniversity of Utah · 1976
- Preparation of crosslinked matrices containing covalently immobilized chemical species and unbound releasable chemical species253US 5,563,056 ABSI Corporation · 1996
- Porous membrane having hydrophilic surface and process215US 4,618,533 AMillipore Corporation · 1986