C01B 25/163
Phosphorous acid
Official title: Phosphorous acid; Salts thereof
C01B25/163 (Phosphorous acid) appears on 33 US grants and 19 published applications in this corpus.
Search patents in C01B- Granted patents
- 33
- Published applications
- 19
- Assignees
- 34
- Inventors
- 91
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 3 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 2 | 3 |
| 2020 | 1 | 2 |
| 2021 | 0 | 1 |
| 2022 | 2 | 3 |
| 2023 | 2 | 1 |
| 2024 | 1 | 1 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Advanced control method for an evaporation unit16 Sep 2025US 12,415,143 B2Caloritum NV
- Aluminum phosphite-based complex with dual-peak thermal gravity decomposition characteristics and preparation method and use thereof1 Jul 2025US 12,344,789 B2Jiangsu Liside New Material Co., Ltd.
- Non-aqueous electrolyte solution for lithium secondary battery and lithium secondary battery comprising same5 Nov 2024US 12,136,701 B2LG Energy Solution, Ltd.
- Crystalline aluminum phosphite, preparation method and application thereof17 Oct 2023US 11,787,921 B2Jiangsu Liside New Material Co., Ltd.
- Method for producing lithium difluorophosphate29 Aug 2023US 11,738,998 B2Mitsui Chemicals, Inc.
- Organic compound, perovskite precursor solution, perovskite film, perovskite cell, and electric apparatus18 Dec 2025US 2025/0386725 A1Contemporary Amperex Technology Co., Limited
- Methods for preparation of ca nutrient to support carbon neutrality4 Dec 2025US 2025/0367598 A1Sabic Agri-Nutrients Company
- Non-Aqueous Electrolyte Solution for Lithium Secondary Battery and Lithium Secondary Battery Comprising Same30 May 2024US 2024/0178447 A1LG Energy Solution, Ltd.
- Aluminum phosphite-based complex with dual-peak thermal gravity decomposition characteristics and preparation method and use thereof19 Jan 2023US 2023/0015188 A1Jiangsu Liside New Material Co., Ltd.
- Advanced control method for an evaporation unit10 Nov 2022US 2022/0355219 A1Caloritum NV
Most cited
By later US patents
- Method for diagnosing an engine using computer based models72US 5,377,112 ACaterpillar Inc. · 1994
- Production of anticorrosive pigments containing phosphorus34US 4,294,808 AHoechst Aktiengesellschaft · 1981
- Basic calcium aluminum hydroxy phosphites, a process for their production and their use11US 5,356,982 ABarlocher GmbH · 1994
- Process for preparation of lead compounds10US 4,324,768 AMizusawa Kagaku Kozyo Kabushiki Kaisha · 1982
- Process for the production of alkali metal hypophosphites9US 5,225,052 ARinkagaku Kogyo Co., Ltd. · 1993