B01D 71/021
Carbon
Official title: {Carbon}
B01D71/021 (Carbon) appears on 560 US grants and 892 published applications in this corpus.
Search patents in B01D- Granted patents
- 560
- Published applications
- 892
- Assignees
- 407
- Inventors
- 1,852
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 8 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 6 |
| 2003 | 5 | 2 |
| 2004 | 3 | 9 |
| 2005 | 1 | 6 |
| 2006 | 3 | 13 |
| 2007 | 5 | 11 |
| 2008 | 4 | 8 |
| 2009 | 5 | 14 |
| 2010 | 7 | 17 |
| 2011 | 9 | 15 |
| 2012 | 5 | 18 |
| 2013 | 14 | 36 |
| 2014 | 14 | 35 |
| 2015 | 21 | 50 |
| 2016 | 22 | 43 |
| 2017 | 21 | 68 |
| 2018 | 44 | 62 |
| 2019 | 42 | 62 |
| 2020 | 52 | 69 |
| 2021 | 51 | 65 |
| 2022 | 43 | 68 |
| 2023 | 36 | 64 |
| 2024 | 39 | 58 |
| 2025 | 52 | 49 |
| 2026 | 25 | 44 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Carbon molecular sieve membranes based on oxygen-free polymeric precursors22 Sep 2026US 12,741,250 B2King Abdullah University of Science and Technology
- Separation of alcohol using a membrane15 Sep 2026US 12,734,482 B2Altr Fltr Inc.
- Membrane assembly for gas separation, method for producing the membrane assembly and method of separating gases15 Sep 2026US 12,734,487 B2Université De Fribourg
- Method for manufacturing a separation membrane based on a polar carbon nanotube dispersion and a polar one-dimensional carbon body28 Jul 2026US 12,691,418 B2Industry-Academic Cooperation Foundation, Yonsei University
- Filtration membrane and method of production thereof28 Jul 2026US 12,691,422 B2NewSouth Innovations Pty Limited
- Purge device and production method for separation membrane1 Oct 2026US 2026/0295514 A1Mitsubishi Heavy Industries, Ltd.
- Water filtration assembly having a polymer hydrogel filtration media structure24 Sep 2026US 2026/0284604 A1Haier US Appliance Solutions, Inc.
- Method and use of a graphene oxide membrane for removing at least a portion of one or more disinfectants from a liquid feed10 Sep 2026US 2026/0264026 A1NewSouth Innovations Pty Limited
- Organic solvent regenerator, substrate processing system, and method of regenerating organic solvent27 Aug 2026US 2026/0250222 A1SCREEN Holdings Co., Ltd.
- Membrane separation apparatus and engine exhaust apparatus20 Aug 2026US 2026/0241331 A1Hunan University
Most cited
By later US patents
- Purification of fluids with nanomaterials104US 7,211,320 B1Seldon Technologies, LLC · 2007
- Nanomesh article and method of using the same for purifying fluids88US 7,419,601 B2Seldon Technologies, LLC · 2008
- Method for continuous fabrication of carbon nanotube networks or membrane materials84US 7,459,121 B2The Florida State University Research Foundation, Inc. · 2008
- Gas separation by adsorbent membranes83US 5,104,425 AAir Products and Chemicals, Inc. · 1992
- Composite carbon fluid separation membranes82US 5,288,304 AThe University of Texas System · 1994