B01D 39/1669
Cellular material
Official title: {Cellular material}
B01D39/1669 (Cellular material) appears on 171 US grants and 211 published applications in this corpus.
Search patents in B01D- Granted patents
- 171
- Published applications
- 211
- Assignees
- 154
- Inventors
- 561
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 2 |
| 2003 | 0 | 4 |
| 2004 | 1 | 3 |
| 2005 | 1 | 6 |
| 2006 | 0 | 5 |
| 2007 | 2 | 2 |
| 2008 | 1 | 4 |
| 2009 | 2 | 5 |
| 2010 | 1 | 6 |
| 2011 | 1 | 7 |
| 2012 | 3 | 4 |
| 2013 | 4 | 5 |
| 2014 | 4 | 10 |
| 2015 | 5 | 3 |
| 2016 | 7 | 7 |
| 2017 | 7 | 7 |
| 2018 | 6 | 6 |
| 2019 | 3 | 12 |
| 2020 | 6 | 8 |
| 2021 | 7 | 35 |
| 2022 | 11 | 18 |
| 2023 | 7 | 21 |
| 2024 | 11 | 20 |
| 2025 | 13 | 5 |
| 2026 | 9 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Oil and fuel collector25 Aug 2026US 12,714,951 B2Manvers Engineering Limited
- Anti-microbial filter18 Aug 2026US 12,708,690 B2Acell Industries Limited
- Face aerogel cover equipment9 Jun 2026US 12,649,070 B2
- Functionalized cellular elastomer foam, and a use of a cellular elastomer foam as a catalyst substrate12 May 2026US 12,624,182 B2Centre National De La Recherche Scientifique
- Ventilating and filtrating face mask5 May 2026US 12,616,857 B2NIKE, Inc.
- Porous Polymer Scaffolds, and Methods of Making and Using the Same27 Aug 2026US 2026/0250477 A1The Regents of the University of California
- Highly transparent thin polyvinyl alcohol aerogels and manufacture thereof20 Aug 2026US 2026/0242558 A1Northeastern University
- Filter containing pharmaceutical salt for a face mask, breathable face mask containing the filter, and method of manufacturing18 Jun 2026US 2026/0166349 A1
- Devices for cell separation14 May 2026US 2026/0131330 A1Southwest Research Institute
- Air filter medium, filter pleat pack, and air filter unit19 Mar 2026US 2026/0077285 A1Nitto Denko Corporation
Most cited
By later US patents
- Air filter66US 4,758,460 APipercross Limited · 1988
- Breathable, non-linting laminate66US 4,816,328 AW. L. Gore & Associates, Inc. · 1989
- Filter and method of making same62US 5,338,340 AD-Mark, Inc. · 1994
- Air filter57US 5,037,455 AThe Great American Filter Company · 1991
- Demister assembly for removing liquids from gases56US 4,050,237 APall Corporation · 1977