Process for transitioning between incompatible catalysts
US-2017342174-A1 · Nov 30, 2017 · US
Titanium, zirconium, hafnium or compounds thereof
Titanium, zirconium, hafnium or compounds thereof · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C08F4/64 |
| Official title | Titanium, zirconium, hafnium or compounds thereof |
| Display label | Titanium, zirconium, hafnium or compounds thereof |
| Total patents | 207 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 25 |
| 2016 | 25 |
| 2017 | 23 |
| 2018 | 23 |
| 2019 | 25 |
| 2020 | 16 |
| 2021 | 17 |
| 2022 | 16 |
| 2023 | 12 |
| 2024 | 12 |
| 2025 | 11 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Zirconium-based metal-organic frameworks as catalyst for transfer hydrogenation
US-2017320790-A1 · Nov 9, 2017 · US
Ethylene/1-hexene or ethylene/1-butene copolymer having excellent processibility and environmetal stress crack resistance
US-9732172-B2 · Aug 15, 2017 · US
Thermal grease based on hyperbranched olefinic fluid
US-2017226396-A1 · Aug 10, 2017 · US
Propylene polymer with improved processability in thermoforming
US-9701769-B2 · Jul 11, 2017 · US
Polymerization Process Using Pyridyldiamido Compounds Supported on Organoaluminum Treated Layered Silicate Supports
US-2017088641-A1 · Mar 30, 2017 · US
Polymerization process for producing ethylene based polymers
US-2017066858-A1 · Mar 9, 2017 · US
Polyolefin having excellent environmental stress crack resistance
US-2017044278-A1 · Feb 16, 2017 · US
Transition metal complexes supported on metal-organic frameworks for heterogeneous catalysts
US-9562118-B2 · Feb 7, 2017 · US
Ethylene-based quaterpolymer having low glass transition temperature and preparation method thereof
US-9540466-B2 · Jan 10, 2017 · US
Polymerization process for producing ethylene based polymers
US-9527940-B2 · Dec 27, 2016 · US
Ethylene alpha-olefin non-conjugated polyene copolymer, use thereof, and manufacturing method thereof
US-2016347894-A1 · Dec 1, 2016 · US
Heterophasic polypropylene polymer
US-2016333175-A1 · Nov 17, 2016 · US
Olefin-based polymer
US-9481747-B2 · Nov 1, 2016 · US
Modified catalyst supports
US-9475893-B2 · Oct 25, 2016 · US
Catalyst for olefin polymerization, method for producing olefin polymer, method for producing propylene-based copolymer, propylene polymer, propylene-based polymer composition, and use of those
US-2016280819-A1 · Sep 29, 2016 · US
Ethylene/1-hexene or ethylene/1-butene copolymer having excellent processibility and environmetal stress crack resistance (as amended)
US-2016280822-A1 · Sep 29, 2016 · US
Olefin-based polymer
US-2016272743-A1 · Sep 22, 2016 · US
Catalyst component for olefin polymerization, preparation method thereof, and catalyst comprising same
US-2016264694-A1 · Sep 15, 2016 · US
Ethylene-based quaterpolymer having low glass transition temperature and preparation method thereof
US-2016251464-A1 · Sep 1, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08F4/64?
- CPC C08F4/64 is the Cooperative Patent Classification code for “Titanium, zirconium, hafnium or compounds thereof.”
- How many patents are filed under CPC C08F4/64 (Titanium, zirconium, hafnium or compounds thereof)?
- Our database includes 207 publications tagged with this CPC code.
- Is patent activity under CPC C08F4/64 growing?
- Publication counts under this code: 12 in 2024 vs 11 in 2025 (latest complete years).