Yasuo Maruyama
28Patents
12h-index
57Co-inventors
84Inventor score
Filing activity: Jul 31, 1975 → May 25, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5308811A | Catalyst for polymerizing an olefin and method for producing an olefin polymer | Emerging Cross-Sectional Technologies | 104 | Expired |
| US5973084A | Method for polymerizing olefins using a novel catalyst | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5928982A | Catalyst for polymerizing an olefin and method for polymerizing the olefin | Emerging Cross-Sectional Technologies | 43 | Expired |
| US6340652B1 | Catalysts for polymerization of &agr;-olefins, process for producing &agr;-olefin polymers, novel transition metal compounds and catalyst components for polymerization of &agr;-olefin | Emerging Cross-Sectional Technologies | 34 | Expired |
| US6825280B1 | Propylene block copolymer and propylene resin composition | Chemistry; Metallurgy | 21 | Expired |
| US5649301A | Mobile communication method for controlling origination or termination of a call in a desired network | Electricity | 21 | Expired |
| US5537882A | Semiconductor sensor for detecting physical amount without thermal hypsteresis where output wiring is disposed in a stress insensitive direction | Physics | 20 | Expired |
| US4060593A | Preparation of titanium trichloride | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4902761A | Method for producing an olefin polymer | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5703941A | Connection control method for personal communications | Electricity | 17 | Expired |
| US6252097A | Transition metal compounds | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4115533A | Preparation of solid titanium trichloride | Chemistry; Metallurgy | 14 | Expired |
| US4380608A | Process for producing propylene-ethylene block copolymer | Chemistry; Metallurgy | 12 | Expired |
| US5719429A | High frequency/high output insulated gate semiconductor device with reduced and balanced gate resistance | Electricity | 12 | Expired |
| US6512924B2 | Mobile communications system | Electricity | 10 | Expired |
| US4115532A | Preparation of solid titanium trichloride | Chemistry; Metallurgy | 9 | Expired |
| US7436106B2 | Piezoelectric device | Emerging Cross-Sectional Technologies | 5 | Active |
| US4645797A | 3-Methylbutene-1 polymer composition and process for its production | Chemistry; Metallurgy | 4 | Expired |
| US5061755A | Polypropylene composition and highly transparent polypropylene film made thereof | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4883848A | Method for producing an olefin polymer | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5128417A | 3-methylbutene-1 polymer, composition containing said polymer, and molded articles of said composition | Electricity | 1 | Expired |
| US5995837A | Mobile communication system | Electricity | 1 | Expired |
| US6590045B2 | Catalysts for polymerization of &agr;-olefins, process for producing &agr;-olefin polymers, novel transition metal compounds and catalyst components for polymerization of &agr;-olefin | Emerging Cross-Sectional Technologies | 1 | Expired |
| US10301401B2 | Olefin polymerization catalyst and method for producing olefin polymer | Chemistry; Metallurgy | 0 | Active |
| US10259891B2 | Olefin polymerization catalyst and method for producing olefin polymer | General | 0 | Revoked |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.