Tsutomu Ushioda
18Patents
11h-index
31Co-inventors
68Inventor score
Filing activity: Nov 28, 1997 → Apr 17, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5874505A | Polypropylene composition | Emerging Cross-Sectional Technologies | 60 | Expired |
| US6388040B1 | Propylene/ethylene/&agr;-olefin terpolymers and processes for the production thereof | Emerging Cross-Sectional Technologies | 41 | Expired |
| US6326432A | Polypropylene composition | Chemistry; Metallurgy | 39 | Expired |
| US6303696A | Propylene (co)polymer composition using metallocene catalyst | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6303698A | Propylene copolymer and process for the production thereof | Chemistry; Metallurgy | 16 | Expired |
| US6846943B2 | Metallocene compound, olefin polymerization catalyst containing the compound, and method for producing an olefin polymer by use of the catalyst | Chemistry; Metallurgy | 16 | Expired |
| US6479646B1 | Metallocene compounds having indenyl ligand and catalysts for olefin polymerization containing the same | Chemistry; Metallurgy | 15 | Expired |
| US6365689B1 | Propylene/ethylene random copolymer, molding material, and molded article | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6635733B2 | Elastomeric polypropylene | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6995279B2 | Metallocene compounds, processes for the production of olefin polymers using catalysts containing the compounds, and olefin polymers produced by the processes | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6410662B1 | Process for the preparation of olefin (co) polymers, olefin copolymers, and application thereof | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6441111B1 | Polydisperse propylene polymer and process for producing the same | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6153710A | Preactivated catalyst for olefin (CO)polymer, catalyst for olefin (CO)polymerization, olefin (CO)polymer composition, and process for producing the same | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6337372B1 | Propylene/propylene/olefin block copolymer and process for producing the same | Chemistry; Metallurgy | 4 | Expired |
| US7019157B2 | Metallocene compounds, production process for olefin polymers using catalysts containing them and olefin polymers produced by the production process | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6515037B2 | Polypropylene base resin composition for foam-molding, foamed article using the same composition, production process for the same foamed article and foam-molded product using the foamed-article | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6344528B1 | Catalyst for olefin (CO) polymerization and process for the production of olefin (CO) polymers | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7906599B2 | Transition metal compound, catalyst for olefin polymerization containing the same, and method for producing propylene/ethylene-α-olefin block copolymer by using the catalyst | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.