C08F 4/52
Selected from boron, aluminium, gallium, indium, thallium or rare earths
Official title: selected from boron, aluminium, gallium, indium, thallium or rare earths (C08F4/14 takes precedence)
C08F4/52 (Selected from boron, aluminium, gallium, indium, thallium or rare earths) appears on 283 US grants and 281 published applications in this corpus.
Search patents in C08F- Granted patents
- 283
- Published applications
- 281
- Assignees
- 139
- Inventors
- 760
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 0 |
| 2002 | 6 | 10 |
| 2003 | 5 | 2 |
| 2004 | 12 | 3 |
| 2005 | 4 | 4 |
| 2006 | 1 | 5 |
| 2007 | 4 | 2 |
| 2008 | 1 | 5 |
| 2009 | 1 | 2 |
| 2010 | 3 | 2 |
| 2011 | 0 | 7 |
| 2012 | 4 | 11 |
| 2013 | 8 | 22 |
| 2014 | 12 | 36 |
| 2015 | 31 | 31 |
| 2016 | 24 | 10 |
| 2017 | 16 | 11 |
| 2018 | 14 | 12 |
| 2019 | 6 | 18 |
| 2020 | 10 | 19 |
| 2021 | 11 | 20 |
| 2022 | 22 | 12 |
| 2023 | 21 | 16 |
| 2024 | 9 | 8 |
| 2025 | 5 | 10 |
| 2026 | 10 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for producing catalyst for polymerization of olefin, catalyst for polymerization of olefin, and method for producing polymer of olefin15 Sep 2026US 12,735,525 B2Toho Titanium Co., Ltd.
- Olefin polymerization bimetallic activators8 Sep 2026US 12,729,257 B2Dow Global Technologies LLC
- Process for preparing high-reactivity isobutene homo- or copolymers1 Sep 2026US 12,723,113 B2BASF SE
- Ethylene-octene copolymers with improved property profile1 Sep 2026US 12,723,118 B2Borealis AG
- Hydrocarbyl-modified methylaluminoxane cocatalysts for bis-phenylphenoxy metal-ligand complexes21 Apr 2026US 12,606,647 B2Dow Global Technologies LLC
- A highly efficient process for the recovery and conversion of methylaluminoxane residues24 Sep 2026US 2026/0285883 A1LANXESS Organometallics GmbH
- Process and apparatus for the preparation of highly reactive polyisobutylene27 Aug 2026US 2026/0250436 A1Hindustan Petroleum Corporation Limited
- Metallocenes containing alkenyloxyphenyl groups producing high molecular weight polyethylene11 Jun 2026US 2026/0159615 A1Chevron Phillips Chemical Company LP
- Hologram recording medium, preparation method thereof and optical element comprising the same27 Nov 2025US 2025/0362644 A1LG Chem.Ltd.
- Hologram recording medium and optical element comprising the same16 Oct 2025US 2025/0320317 A1LG Chem.Ltd.
Most cited
By later US patents
- Acrylic adhesive composition and organoboron initiator system76US 5,286,821 ANational Starch and Chemical Investment Holding Corporation · 1994
- Organoborane polyamine complexes and adhesive composition made therewith72US 5,616,796 AMinnesota Mining and Manufacturing Company · 1997
- Organoborane polyamine complexes and adhesive compositions made therewith72US 5,795,657 AMinnesota Mining and Manufaturing Company · 1998
- Acrylic adhesive composition and organoboron initiator system71US 5,376,746 ANational Starch and Chemical Investment Holding Corporation · 1994
- Free radical polymerization process68US 5,312,871 ACarnegie Mellon University · 1994