Hisayoshi Yanagihara
12Patents
8h-index
16Co-inventors
69Inventor score
Filing activity: Jul 11, 1990 → Oct 1, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5760141A | Propylene block copolymer, process for preparation thereof and propylene resin composition comprising same | Chemistry; Metallurgy | 30 | Expired |
| US6184328A | Propylene-based polymer, method for its production, composition thereof, catalyst component for polymerization, and method for its production | Chemistry; Metallurgy | 16 | Expired |
| US5208302A | Catalyst, process for preparation of same and process for polymerization of olefins using same | Chemistry; Metallurgy | 15 | Expired |
| US5684099A | Propylene block copolymer, process for producing the same, and resin composition comprising the same | Chemistry; Metallurgy | 13 | Expired |
| US8278470B2 | Method for producing trialkyl gallium | Electricity | 13 | Active |
| US5916990A | Propylene-based polymer, method of its production, composition thereof, catalyst component for polymerization, and method for its production | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5703172A | Propylene block copolymer and process for producing the same | Chemistry; Metallurgy | 11 | Expired |
| US5804665A | Propylene block copolymer and process for producing the same | Chemistry; Metallurgy | 9 | Expired |
| US6323298A | Propylene-based polymer, method for its production, composition thereof, catalyst component for polymerization, and method for its production | Chemistry; Metallurgy | 8 | Expired |
| US5885920A | Process for producing catalyst carrier for olefin polymerization | Chemistry; Metallurgy | 5 | Expired |
| US5049533A | Catalyst, process for preparation of same, and process for polymerization of olefins using same | Chemistry; Metallurgy | 1 | Expired |
| US7667063B2 | Method for producing trialkyl gallium | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.