C08F 4/652
Pretreating with metals or metal-containing compounds
C08F4/652 (Pretreating with metals or metal-containing compounds) appears on 186 US grants and 231 published applications in this corpus.
Search patents in C08F- Granted patents
- 186
- Published applications
- 231
- Assignees
- 69
- Inventors
- 590
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 3 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 5 | 5 |
| 2005 | 0 | 0 |
| 2006 | 2 | 0 |
| 2007 | 2 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 0 | 2 |
| 2013 | 0 | 3 |
| 2014 | 2 | 1 |
| 2015 | 4 | 7 |
| 2016 | 6 | 13 |
| 2017 | 9 | 19 |
| 2018 | 12 | 18 |
| 2019 | 13 | 33 |
| 2020 | 21 | 31 |
| 2021 | 23 | 28 |
| 2022 | 25 | 19 |
| 2023 | 17 | 18 |
| 2024 | 17 | 11 |
| 2025 | 15 | 6 |
| 2026 | 5 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C08F 4/654With magnesium or compounds thereof115
- C08F 4/655With aluminium or compounds thereof63
- C08F 4/658With metals or metal-containing compounds, not provided for in a single group30
- C08F 4/656With silicon or compounds thereof24
- C08F 4/657With metals or metal-containing compounds, not provided for in groups c08f4/653 -8
- C08F 4/653With metals of c08f4/64 or compounds thereof4
Recent patents
- Polymers with low levels of volatile organic compounds and methods of making such polymers22 Sep 2026US 12,742,026 B2ExxonMobil Chemical Patents Inc.
- 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.
- Modified polyethylene resins and process for making the same7 Jul 2026US 12,674,011 B2Dow Global Technologies LLC
- Process to prepare a procatalyst for polymerization of olefins3 Mar 2026US 12,565,549 B2Sabic Global Technologies B.V.
- Process for introducing catalyst in a polymerization process24 Feb 2026US 12,559,580 B2Braskem S/A
- Solid titanium catalyst component, catalyst for polymerizing olefin, and method for polymerizing olefin24 Sep 2026US 2026/0286018 A1Mitsui Chemicals, Inc.
- Method for producing magnesium compound particle, method for controlling shape of olefin polymer particle, and olefin polymer particle6 Aug 2026US 2026/0226201 A1Mitsui Chemicals, Inc.
- Process6 Aug 2026US 2026/0226202 A1Ineos Europe AG
- Transparent polypropylene resin and preparation method thereof9 Jul 2026US 2026/0192501 A1Shandong Chambroad Polyolefin Performance Materials Co., Ltd.
- Propylene preliminary polymerization9 Jul 2026US 2026/0193391 A1Braskem S/A
Most cited
By later US patents
- Crystalline polypropylenes, process for preparing thereof, polypropylene compositions, and thermoformed products44US 6,403,708 B2Mitsui Chemicals, Inc. · 2002
- Process for the preparation of ultrahigh molecular weight polyethylene having a high bulk density32US 5,587,440 AHoechst Aktiengesellschaft · 1996
- Catalyst systems and methods of making and using same24US 8,932,975 B2Chevron Phillips Chemical Company LP · 2015
- Catalyst component23US 10,870,718 B2Borealis AG · 2020
- Dilution index21US 9,512,282 B2NOVA Chemicals (International) S.A. · 2016