B01D 53/64
Heavy metals or compounds thereof
Official title: Heavy metals or compounds thereof, e.g. mercury
B01D53/64 (Heavy metals or compounds thereof) appears on 834 US grants and 877 published applications in this corpus.
Search patents in B01D- Granted patents
- 834
- Published applications
- 877
- Assignees
- 419
- Inventors
- 1,486
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 7 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 7 | 0 |
| 1994 | 8 | 0 |
| 1995 | 6 | 0 |
| 1996 | 11 | 0 |
| 1997 | 10 | 0 |
| 1998 | 6 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 9 | 2 |
| 2002 | 8 | 16 |
| 2003 | 16 | 22 |
| 2004 | 13 | 24 |
| 2005 | 19 | 25 |
| 2006 | 14 | 44 |
| 2007 | 14 | 35 |
| 2008 | 25 | 37 |
| 2009 | 37 | 46 |
| 2010 | 41 | 64 |
| 2011 | 33 | 58 |
| 2012 | 44 | 50 |
| 2013 | 64 | 58 |
| 2014 | 55 | 64 |
| 2015 | 52 | 49 |
| 2016 | 31 | 50 |
| 2017 | 44 | 45 |
| 2018 | 40 | 50 |
| 2019 | 42 | 36 |
| 2020 | 34 | 32 |
| 2021 | 32 | 23 |
| 2022 | 24 | 18 |
| 2023 | 8 | 8 |
| 2024 | 8 | 8 |
| 2025 | 8 | 8 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system for controlling mercury emissions from coal-fired thermal processes26 May 2026US 12,636,611 B2ARQ Solutions (ES), INC.
- Apparatus and method for exhaust gas pollution reduction12 May 2026US 12,623,185 B2Mercury Capture Intellectual Property, LLC
- Process, system, and apparatus for reducing environmental pollutants from a mobile phase21 Apr 2026US 12,605,693 B2Albemarle Amendments, LLC
- Systems and methods for removal of mercury and/or hydrochloric acid from gas streams using calcium-containing particles6 Jan 2026US 12,515,165 B2Graymont (PA) Inc.
- Removal of mercury in a gas dehydration process using thermally stable chemical additives2 Dec 2025US 12,485,383 B2Chevron U.S.A.Inc.
- Apparatus and method for exhaust gas pollution reduction17 Sep 2026US 2026/0273462 A1Mercury Capture Intellectual Property, LLC
- Method for selectively recovering volatile pt or pd10 Sep 2026US 2026/0265057 A1Yara International Asa
- Exhaust gas purification method and exhaust gas purification apparatus20 Aug 2026US 2026/0241339 A1Mitsubishi Heavy Industries, Ltd.
- Systems and methods for removal of mercury and/or hydrochloric acid from gas streams using calcium-containing particles2 Jul 2026US 2026/0183699 A1Graymont (PA) Inc.
- Regenerable hgcl2 standard gas generating agent, and preparation method and application thereof25 Jun 2026US 2026/0175155 A1Southeast University
Most cited
By later US patents
- Abatement of effluent from chemical vapor deposition processes using ligand exchange resistant metal-organic precursor solutions401US 6,500,487 B1Advanced Technology Materials, Inc. · 2002
- Abatement of effluent from chemical vapor deposition processes using ligand exchange resistant metal-organic precursor solutions386US 6,833,024 B2Adanced Technology Materials, Inc. · 2004
- Process for removing mercury from a gas or a liquid by absorption on a copper sulfide containing solid mass253US 4,094,777 AInstitut Francais du Petrole · 1978
- Process for removal of mercury vapor and adsorbent therefor229US 4,500,327 ATakeda Chemical Industries, Ltd. · 1985
- Flue gas mercury control214US 8,080,088 B12011