B01J 2540/52
Phosphorus acid or phosphorus acid ester groups
B01J2540/52 (Phosphorus acid or phosphorus acid ester groups) appears on 18 US grants and 11 published applications in this corpus.
Search patents in B01J- Granted patents
- 18
- Published applications
- 11
- Assignees
- 14
- Inventors
- 44
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 3 |
| 2019 | 4 | 2 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Carbon dioxide reducing photocatalyst and preparation method therefor, and carbon dioxide reducing method9 Jun 2026US 12,649,149 B2Korea University Research Foundation and Business Foundation, Sejong Campus
- Polycycloolefin polymer and inorganic nanoparticle compositions as optical materials31 Jan 2023US 11,566,100 B2Promerus, LLC
- Polycycloolefin polymer and inorganic nanoparticle compositions as optical materials8 Sep 2020US 10,767,002 B2Promerus, LLC
- Catalyst composition and method of preparing polyolefin using the same24 Dec 2019US 10,513,474 B2LG Chem.Ltd.
- Method of producing dialdehyde compound19 Nov 2019US 10,479,750 B2Kuraray Co., Ltd.
- Carbon dioxide reducing photocatalyst and preparation method therefor, and carbon dioxide reducing method23 Jun 2022US 2022/0193637 A1Korea University Research and Business Foundation, Sejong Campus
- Polycycloolefin polymer and inorganic nanoparticle compositions as optical materials19 Nov 2020US 2020/0362096 A1Promerus, LLC
- Polycycloolefin polymer and inorganic nanoparticle compositions as optical materials14 Feb 2019US 2019/0048130 A1Promerus, LLC
- Method of producing dialdehyde compound24 Jan 2019US 2019/0023636 A1Kuraray Co., Ltd.
- Catalyst system for olefin oligomerization and method for olefin oligomerization using the same10 May 2018US 2018/0127333 A1LG Chem.Ltd.
Most cited
By later US patents
- Mesoporous crystalline acid composition of a diphosphonate-phosphite of a tetravalent metal which can be used as a catalyst27US 5,892,080 AEniricerche S. p. A. · 1999
- Process for the preparation of linear polyethylenepolyamines by reacting monoethanolamine with ethylenediamine in the presence of an intercalatively active catalyst24US 4,550,209 ATexaco Inc. · 1985
- Use of Lewis acids for the breakdown of gelatinous rare earth compounds in hydrocarbon solutions24US 6,197,713 B1Bridgestone Corporation · 2001
- Transition metal recovery21US 5,114,473 AUnion Carbide Chemicals & Plastics Technology Corporation · 1992
- Chiral porous metal phosphonates for heterogeneous asymmetric catalysis12US 6,878,838 B2The University of North Carolina at Chapel Hill · 2005