B01D 2239/0471
Surface coating material
B01D2239/0471 (Surface coating material) appears on 744 US grants and 856 published applications in this corpus.
Search patents in B01D- Granted patents
- 744
- Published applications
- 856
- Assignees
- 565
- Inventors
- 2,221
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 9 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 11 | 0 |
| 1991 | 12 | 0 |
| 1992 | 11 | 0 |
| 1993 | 21 | 0 |
| 1994 | 19 | 0 |
| 1995 | 22 | 0 |
| 1996 | 19 | 0 |
| 1997 | 19 | 0 |
| 1998 | 25 | 0 |
| 1999 | 21 | 0 |
| 2000 | 18 | 0 |
| 2001 | 13 | 6 |
| 2002 | 15 | 14 |
| 2003 | 10 | 8 |
| 2004 | 10 | 24 |
| 2005 | 7 | 15 |
| 2006 | 8 | 32 |
| 2007 | 6 | 31 |
| 2008 | 14 | 26 |
| 2009 | 19 | 19 |
| 2010 | 11 | 27 |
| 2011 | 23 | 31 |
| 2012 | 14 | 22 |
| 2013 | 17 | 18 |
| 2014 | 14 | 21 |
| 2015 | 10 | 13 |
| 2016 | 8 | 14 |
| 2017 | 10 | 23 |
| 2018 | 8 | 26 |
| 2019 | 16 | 28 |
| 2020 | 22 | 33 |
| 2021 | 16 | 93 |
| 2022 | 31 | 93 |
| 2023 | 36 | 94 |
| 2024 | 38 | 65 |
| 2025 | 51 | 49 |
| 2026 | 42 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for adjusting grouting parameters in preparation of ceramic composite fiber-based catalytic filter tube, and method and device for preparing ceramic composite fiber-based catalytic filter tube6 Oct 2026US 12,752,223 B2Zhejiang Zhiyuan Environmental Technology Co., Ltd
- Substrate treatments29 Sep 2026US 12,746,490 B2Donaldson Company, Inc.
- Granulated hierarchical material structure29 Sep 2026US 12,746,527 B2Metalmark Innovations, PBC
- Personal protective anti-viral face mask15 Sep 2026US 12,734,378 B2lowa State University Research Foundation, Inc.
- Composite for air purification, method of manufacturing the same, and filter including the same25 Aug 2026US 12,714,958 B2Hyundai Motor Company
- Method for preparing a composite filter medium and the composite filter medium obtained with this method1 Oct 2026US 2026/0295484 A1Saati S.P.A.
- Surface-catalytically finished polymer fibres and/or polymeric sheets, method for surface-catalytically finishing same, and use thereof for producing an air purification filter3 Sep 2026US 2026/0257204 A1Hochschule Niederrhein
- Filtration media and filters27 Aug 2026US 2026/0249218 A1DelStar Technologies, Inc.
- Filter medium, method of producing filter medium, and filter element13 Aug 2026US 2026/0233137 A1Mann+Hummel GmbH
- Coated nonwoven article derived from porous polymeric fibers and methods thereof13 Aug 2026US 2026/0234865 A13M Innovative Properties Company
Most cited
By later US patents
- Melt-blown fibrous web1,019US 5,582,907 APall Corporation · 1996
- Deformable well screen320US 5,901,789 AShell Oil Company · 1999
- Polymer, polymer microfiber, polymer nanofiber and applications including filter structures252US 6,743,273 B2Donaldson Company, Inc. · 2004
- Device for removal of contaminants from fluid streams235US 5,750,026 ACorning Incorporated · 1998
- Deformable well screen218US 6,012,522 AShell Oil Company · 2000