B01J 2531/40
Complexes comprising metals of group iv as the central metal
Official title: Complexes comprising metals of Group IV (IVA or IVB) as the central metal
B01J2531/40 (Complexes comprising metals of group iv as the central metal) appears on 1,016 US grants and 812 published applications in this corpus.
Search patents in B01J- Granted patents
- 1,016
- Published applications
- 812
- Assignees
- 417
- Inventors
- 2,289
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 11 | 0 |
| 1982 | 5 | 0 |
| 1983 | 9 | 0 |
| 1984 | 7 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 9 | 0 |
| 1990 | 7 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 23 | 0 |
| 1996 | 18 | 0 |
| 1997 | 20 | 0 |
| 1998 | 29 | 0 |
| 1999 | 33 | 0 |
| 2000 | 51 | 0 |
| 2001 | 52 | 9 |
| 2002 | 64 | 35 |
| 2003 | 39 | 37 |
| 2004 | 24 | 38 |
| 2005 | 39 | 55 |
| 2006 | 32 | 33 |
| 2007 | 28 | 31 |
| 2008 | 17 | 24 |
| 2009 | 23 | 25 |
| 2010 | 28 | 34 |
| 2011 | 24 | 31 |
| 2012 | 25 | 42 |
| 2013 | 30 | 26 |
| 2014 | 17 | 48 |
| 2015 | 29 | 32 |
| 2016 | 30 | 30 |
| 2017 | 31 | 31 |
| 2018 | 23 | 28 |
| 2019 | 31 | 46 |
| 2020 | 29 | 30 |
| 2021 | 30 | 33 |
| 2022 | 20 | 28 |
| 2023 | 23 | 22 |
| 2024 | 16 | 27 |
| 2025 | 15 | 20 |
| 2026 | 13 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Metal-organic framework (MOF) MIL-125 and preparation method and use thereof25 Aug 2026US 12,714,989 B2Dalian Institute of Chemical Physics, Chinese Academy of Sciences
- Catalytic hydrogenolysis of a polymer25 Aug 2026US 12,715,826 B2Northwestern University
- Supported catalyst and method for synthesizing sucrose-6-ester7 Jul 2026US 12,673,314 B2Anhui Jinhe Industrial Co., Ltd.
- Selective photocatalytic reduction of alkynes to alkenes powered by a cobalt-porphyrin metal-organic frameworks16 Jun 2026US 12,655,078 B2Northwestern University
- Selective terminal CH alumination of saturated hydrocarbons12 May 2026US 12,623,985 B2Cornell University
- Selective olefin oligomerization with transition metal amine bis(phenolate) catalysts8 Oct 2026US 2026/0308083 A1Chevron Phillips Chemical Company LP
- Ziegler-natta catalyst for ethylene polymerization and method for preparing same24 Sep 2026US 2026/0286017 A1Hanwha Solutions Corporation
- Solid titanium catalyst component, catalyst for polymerizing olefin, and method for polymerizing olefin24 Sep 2026US 2026/0286018 A1Mitsui Chemicals, Inc.
- Asymmetrical hafnium metallocenes10 Sep 2026US 2026/0265283 A1Dow Global Technologies LLC
- Symmetrical hafnium metallocene for making polymers with broad-orthogonal composition distributions10 Sep 2026US 2026/0265284 A1Dow Global Technologies LLC
Most cited
By later US patents
- Catalyst system of enhanced productivity544US 5,153,157 AExxon Chemical Patents Inc. · 1992
- Compositions that can produce polymers334US 6,300,271 B1Phillips Petroleum Company · 2001
- Organometal catalyst compositions329US 6,355,594 B1Phillips Petroleum Company · 2002
- Organometal catalyst compositions300US 6,376,415 B1Phillips Petroleum Company · 2002
- Organometal compound catalyst286US 6,391,816 B1Phillips Petroleum Company · 2002