C08F 4/651
Pretreating with non-metals or metal-free compounds
C08F4/651 (Pretreating with non-metals or metal-free compounds) appears on 57 US grants and 66 published applications in this corpus.
Search patents in C08F- Granted patents
- 57
- Published applications
- 66
- Assignees
- 23
- Inventors
- 209
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 2 | 2 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 4 | 6 |
| 2005 | 1 | 1 |
| 2006 | 4 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 4 |
| 2018 | 0 | 4 |
| 2019 | 5 | 17 |
| 2020 | 8 | 10 |
| 2021 | 7 | 3 |
| 2022 | 7 | 8 |
| 2023 | 5 | 5 |
| 2024 | 4 | 1 |
| 2025 | 4 | 1 |
| 2026 | 3 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Filled automotive polypropylene composition containing recyclates14 Jul 2026US 12,679,961 B2Borealis AG
- Ziegler-natta (pro)catalyst systems made with (multi-alkoxy)silane compound19 May 2026US 12,630,655 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 preparing polypropylene composition5 Aug 2025US 12,378,330 B2Borealis AG
- Ziegler-Natta catalysts for olefin polymerization15 Jul 2025US 12,359,005 B2Borealis AG
- Solid catalyst component for olefin polymerization, and preparation method therefor and use thereof25 Jun 2026US 2026/0176385 A1China Petroleum & Chemical Corporation
- Process for preparing a propylene composition18 Sep 2025US 2025/0289914 A1Sabic Global Technologies B.V.
- Solid titanium catalyst component, olefin polymerization catalyst, olefin polymerization method, and propylene polymer29 Feb 2024US 2024/0067764 A1Mitsui Chemicals, Inc.
- Catalyst and preparation thereof7 Sep 2023US 2023/0279159 A1Borealis AG
- Ziegler-natta (pro)catalyst systems made with (multi-alkoxy)silane compound18 May 2023US 2023/0151124 A1Dow Global Technologies LLC
Most cited
By later US patents
- Crystalline polypropylenes, process for preparing thereof, polypropylene compositions, and thermoformed products44US 6,403,708 B2Mitsui Chemicals, Inc. · 2002
- Propylene-based polymer, method for its production, composition thereof, catalyst component for polymerization, and method for its production16US 6,184,328 B2Showa Denko K. K. · 2001
- Components and catalysts for the polymerization of olefins15US 7,015,170 B2Basell Poliolefine Italia S.r.l. · 2006
- Catalyst component for the (CO)polymerization of olefins9US 7,223,712 B2Basell Poliolefine Italia S.r.l. · 2007
- Propylene-based polymer, method for its production, composition thereof, catalyst component for polymerization, and method for its production8US 6,323,298 B1Showa Denko K. K. · 2001