Seiichiro Ima
21Patents
8h-index
23Co-inventors
75Inventor score
Filing activity: Dec 13, 1979 → Aug 29, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5641828A | Polypropylene compositions and film thereof | Chemistry; Metallurgy | 43 | Expired |
| US5115027A | Polypropylene stretched film | Chemistry; Metallurgy | 31 | Expired |
| US4603174A | Stretched polypropylene film | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6057413A | Propylene-ethylene random copolymer film | Chemistry; Metallurgy | 25 | Expired |
| US4769284A | Polypropylene multi-layer film | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4786562A | Polypropylene multi-layer film | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5654372A | Polypropylene composition and the film thereof | Chemistry; Metallurgy | 12 | Expired |
| US4433110A | Process for producing propylene block copolymers | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4283463A | Molded products of polypropylene | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4355144A | Process for producing a propylene-ethylene copolymer having improved stretchability | Chemistry; Metallurgy | 8 | Expired |
| US5340878A | Polypropylene composition and film thereof | Chemistry; Metallurgy | 8 | Expired |
| US4414373A | Propylene-ethylene copolymer having improved stretchability | Chemistry; Metallurgy | 5 | Expired |
| US5019442A | Overlay films | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4839234A | Polypropylene film | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6667375B1 | Ethylene-&agr;-olefin copolymer and polyethylene composition | Chemistry; Metallurgy | 3 | Expired |
| US5726269A | Polypropylene film | Chemistry; Metallurgy | 3 | Expired |
| US6451936B1 | Polypropylene random copolymer and film thereof | Chemistry; Metallurgy | 2 | Expired |
| USRE32542E | Molded products of polypropylene | General | 1 | Expired |
| US4584239A | Stretched multilayer polypropylene film | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5032645A | Polypropylene stretched film | General | 0 | Revoked |
| US4927872A | Polypropylene film | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.