B01J 31/2461
And phosphine-p atoms as ring members in the condensed ring system or
Official title: {and phosphine-P atoms as ring members in the condensed ring system or in a further ring}
B01J31/2461 (And phosphine-p atoms as ring members in the condensed ring system or) appears on 136 US grants and 119 published applications in this corpus.
Search patents in B01J- Granted patents
- 136
- Published applications
- 119
- Assignees
- 75
- Inventors
- 281
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 2 |
| 2002 | 7 | 9 |
| 2003 | 10 | 11 |
| 2004 | 13 | 14 |
| 2005 | 2 | 10 |
| 2006 | 10 | 6 |
| 2007 | 7 | 7 |
| 2008 | 6 | 0 |
| 2009 | 5 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 4 |
| 2014 | 3 | 3 |
| 2015 | 6 | 8 |
| 2016 | 6 | 6 |
| 2017 | 4 | 4 |
| 2018 | 2 | 5 |
| 2019 | 5 | 3 |
| 2020 | 5 | 4 |
| 2021 | 3 | 4 |
| 2022 | 3 | 4 |
| 2023 | 3 | 3 |
| 2024 | 2 | 4 |
| 2025 | 1 | 0 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydrogen storage based on aqueous formate- bicarbonate (hydrogen carbonate) equilibrium9 Jun 2026US 12,649,654 B2Hydrogen Revolution Hungary Kft.
- Tri-(adamantyl) phosphines and applications thereof3 Feb 2026US 12,539,508 B2The Trustees of Princeton University
- Method for preparing chiral 4-aryl-β-amino acid derivative27 Jan 2026US 12,534,427 B2Zhejiang Medicine Co., Ltd.Xinchang Pharmaceutical Factory
- Process for the preparation of biphenylamines1 Jul 2025US 12,344,586 B2Adama Makhteshim Ltd.
- Chromium complex and catalyst therefrom13 Feb 2024US 11,896,965 B2Dow Global Technologies LLC
- Ammonia synthesis catalyst, ammonia production device, and ammonia production method6 Aug 2026US 2026/0225088 A1Idemitsu Kosan Co., Ltd.
- Catalyst system and method for carbonylation reaction23 Jul 2026US 2026/0208174 A1Shandong Nhu Fine Chemical Science and Technology Company Ltd.
- Tri-(adamantyl)phosphines and applications thereof16 Apr 2026US 2026/0102762 A1The Trustees of Princeton University
- Hydrogen storage based on aqueous formate-bicarbonate (hydrogen carbonate) equilibrium3 Oct 2024US 2024/0327207 A1Geomax Project Kft.
- Preparation method of l-nicotine25 Jul 2024US 2024/0246929 A1Huanggang Zy Biotechnology Co., Ltd.
Most cited
By later US patents
- 3,4-dimethyl-2,5,6-tris(p-sulfonatophenyl)-1-phosphanorbornadiene, process for the preparation thereof and process for the hydroformylation of olefinnically unsaturated compounds32US 5,312,951 AHoechst Aktiengesellschaft · 1994
- Ferrocenyl diphosphines as ligands for homogeneous catalysts30US 5,371,256 ACiba-Geigy Corporation · 1994
- Ferrocene diphosphines as ligands for homogeneous catalysts21US 5,563,308 ACiba-Geigy Corporation · 1996
- Silylated ferrocenyldiphosphines, silylated ferrocenyldiphosphines bound to inorganic or polymeric organic supports and also metal complexes thereof, their preparation and uses21US 5,783,715 ANovartis AG · 1998
- Phosphorous containing ligands for metathesis catalysts21US 7,276,616 B2Sasol Technology (UK) Limited · 2007