C01B 17/806
Absorbers
Official title: {Absorbers; Heat exchangers}
C01B17/806 (Absorbers) appears on 44 US grants and 34 published applications in this corpus.
Search patents in C01B- Granted patents
- 44
- Published applications
- 34
- Assignees
- 25
- Inventors
- 90
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 4 |
| 2015 | 3 | 2 |
| 2016 | 2 | 0 |
| 2017 | 1 | 3 |
| 2018 | 2 | 1 |
| 2019 | 2 | 5 |
| 2020 | 5 | 2 |
| 2021 | 0 | 2 |
| 2022 | 2 | 4 |
| 2023 | 4 | 2 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for production of elemental sulfur and sulfuric acid10 Feb 2026US 12,545,580 B2Haldor TopsøE A/S
- Use of sulfur as alternative carbon-free fuel in ammonia primary reformer combustion zone, by coupling ammonia and sulfuric acid production facilities21 Oct 2025US 12,447,454 B1Saudi Arabian Mining Company (Ma'aden)
- Method for carbon dioxide capture and concentration by partitioned multistage circulation based on mass transfer-reaction regulation14 May 2024US 11,980,844 B2Zhejiang University
- Method for production of elemental sulfur by part or fully catalytic oxidation of Claus tail gas7 Nov 2023US 11,807,527 B2Haldor TopsøE A/S
- Method for production of sulfur and sulfuric acid4 Jul 2023US 11,691,877 B2Haldor TopsøE A/S
- Process for removing sulfur containing compounds from gas containing at least one sulfur containing compound10 Sep 2026US 2026/0264009 A1Sulzer Management AG
- Corrosion resistant nozzle and lid for an adiabatic gas cooler9 Apr 2026US 2026/0097409 A1Cg Thermal, LLC
- Method for manufacturing electronic-grade sulfuric acid8 Jan 2026US 2026/0008675 A1Kanto-Ppc Inc.
- Systems and methods for producing sulfuric acid or liquefied sulfur dioxide30 Jan 2025US 2025/0033967 A1Chemetics Inc.
- Process and apparatus for preparing sulfur trioxide from sulfur dioxide24 Oct 2024US 2024/0351879 A1Messer Industries USA, Inc.
Most cited
By later US patents
- Process for absorbing SO.sub.318US 3,950,493 AMetallgesellschaft Aktiengesellschaft · 1976
- Process for the preparation of sulfuric acid15US 4,348,373 AHaldor Topsoe A/S · 1982
- System and a method for producing aqueous sulphuric acid13US 10,465,339 B2Valmet Technologies Oy · 2019
- Apparatus and process12US 5,032,373 AC-I-L Inc. · 1991
- Absorption of wet conversion gas11US 5,118,490 AMonsanto Company · 1992