C01C 1/024
Purification
Official title: {Purification}
C01C1/024 (Purification) appears on 84 US grants and 78 published applications in this corpus.
Search patents in C01C- Granted patents
- 84
- Published applications
- 78
- Assignees
- 66
- Inventors
- 183
- Latest grant
- 18 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 7 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 3 |
| 2002 | 3 | 11 |
| 2003 | 5 | 11 |
| 2004 | 12 | 6 |
| 2005 | 4 | 7 |
| 2006 | 5 | 3 |
| 2007 | 3 | 0 |
| 2008 | 3 | 0 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 2 |
| 2013 | 2 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 3 |
| 2016 | 2 | 1 |
| 2017 | 1 | 3 |
| 2018 | 2 | 3 |
| 2019 | 6 | 4 |
| 2020 | 2 | 3 |
| 2021 | 2 | 0 |
| 2022 | 1 | 2 |
| 2023 | 1 | 1 |
| 2024 | 2 | 5 |
| 2025 | 1 | 2 |
| 2026 | 0 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for recovering ammonia from an ammonia-containing liquid18 Mar 2025US 12,252,428 B2Process Limited
- Method for removing inert gas from liquid ammonia12 Nov 2024US 12,138,564 B2thyssenkrupp AG
- Method and device for safely generating pure ammonia for GC/CI-MS/MS and ICP-MS applications24 Sep 2024US 12,098,078 B1Naif Arab University for Security Sciences (Nauss)
- Methods for extracting and recycling ammonia from MOCVD process exhaust gas by FTrPSA3 Oct 2023US 11,772,037 B2Zhejiang Tiancaiyunji Technology Co.,Ltd.
- System for ammonia distillation1 Nov 2022US 11,485,645 B2The Boeing Company
- Method for recovering valuable constituents from struvite6 Aug 2026US 2026/0225967 A1
- Method for recovering ammonia16 Jul 2026US 2026/0200747 A1Posco
- High efficiency low energy consumption Post Combustion CO2 capture process21 May 2026US 2026/0138078 A1EIG, Inc.
- Systems and Methods for Purification of Ammonia Using Adsorption Media19 Mar 2026US 2026/0077293 A1Bechtel Energy Technologies & Solutions, Inc.
- Process and device for preparing ultra-clean high-purity ammonia water12 Mar 2026US 2026/0070798 A1Jiangsu Meiyang Electronic Chemicals Co., LTD
Most cited
By later US patents
- Polymer formulations for gettering hydrogen62US 5,837,158 ASandia Corporation · 1998
- Process for the treatment of phenol-containing waste water from coal degassing or gasification processes58US 3,972,693 AMetallgesellschaft Aktiengesellschaft · 1976
- Purification of ammonia by distillation34US 7,001,490 B2BASF SE · 2006
- Method and apparatus for purification of hydride gas streams29US 6,241,955 B1Aeronex, Inc. · 2001
- Point-of-use ammonia purification for electronic component manufacture28US 5,496,778 AStartec Ventures, Inc. · 1996