B01D 2253/34
Specific shapes
B01D2253/34 (Specific shapes) appears on 679 US grants and 806 published applications in this corpus.
Search patents in B01D- Granted patents
- 679
- Published applications
- 806
- Assignees
- 412
- Inventors
- 1,892
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 6 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 13 | 0 |
| 1998 | 14 | 0 |
| 1999 | 17 | 0 |
| 2000 | 11 | 0 |
| 2001 | 20 | 9 |
| 2002 | 20 | 20 |
| 2003 | 24 | 29 |
| 2004 | 20 | 30 |
| 2005 | 17 | 33 |
| 2006 | 16 | 22 |
| 2007 | 19 | 14 |
| 2008 | 13 | 22 |
| 2009 | 6 | 19 |
| 2010 | 18 | 19 |
| 2011 | 15 | 23 |
| 2012 | 15 | 32 |
| 2013 | 17 | 23 |
| 2014 | 27 | 26 |
| 2015 | 26 | 38 |
| 2016 | 25 | 31 |
| 2017 | 22 | 28 |
| 2018 | 30 | 48 |
| 2019 | 31 | 32 |
| 2020 | 28 | 32 |
| 2021 | 19 | 36 |
| 2022 | 27 | 32 |
| 2023 | 43 | 54 |
| 2024 | 29 | 47 |
| 2025 | 31 | 64 |
| 2026 | 22 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- High throughput moving panel direct air capture system6 Oct 2026US 12,752,238 B2Zero Carbon Systems, Inc.
- Process of forming a gas adsorbant macroporous material15 Sep 2026US 12,734,503 B2Spiritus Technologies, Pbc
- Vehicle air conditioning system8 Sep 2026US 12,728,705 B2NGK Insulators, Ltd.
- Polymeric sorbent fiber compositions incorporating metal organic frameworks25 Aug 2026US 12,714,983 B2ExxonMobil Technology and Engineering Company
- Vehicle compartment purification system, method for controlling vehicle compartment purification system, program and storage medium25 Aug 2026US 12,715,271 B2NGK Insulators, Ltd.
- Gas turbine test bench with gas capture24 Sep 2026US 2026/0287471 A1
- Structured powders for carbon dioxide capture17 Sep 2026US 2026/0273503 A1Anvil Capture Systems Inc.
- Method for carbon dioxide sequestration with mof10 Sep 2026US 2026/0264045 A1King Fahd University of Petroleum and Minerals
- Method and apparatus for carbon dioxide sequestration3 Sep 2026US 2026/0257194 A1Anvil Capture Systems Inc.
- Adsorbent and systems for direct air capture27 Aug 2026US 2026/0249228 A1
Most cited
By later US patents
- Rotary pressure swing adsorption apparatus181US 6,406,523 B1QuestAir Technologies Inc. · 2002
- Air purification system and process135US 4,231,768 APall Corporation · 1980
- Filter and method for removing mercury, bacteria, pathogens and other vapors from gas134US 4,917,862 A1990
- Apparatus for adsorbing fuel vapor126US 4,386,947 ANippon Soken, Inc. · 1983
- Activated carbon honeycombs and applications thereof116US 5,288,306 ATakeda Chemical Industries, Ltd. · 1994