Tsutomu Isaka
33Patents
19h-index
57Co-inventors
84Inventor score
Filing activity: Jun 11, 1973 → Nov 9, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4230767A | Heat sealable laminated propylene polymer packaging material | Emerging Cross-Sectional Technologies | 127 | Expired |
| US4413066A | Crosslinkable polyethylene resin compositions | Chemistry; Metallurgy | 72 | Expired |
| US4351876A | Laminate films and sheets of crosslinked polyethylene resins | Emerging Cross-Sectional Technologies | 71 | Expired |
| US5424339A | Method for producing an optical material having a high refractive index | Chemistry; Metallurgy | 63 | Expired |
| US4446283A | Crosslinkable polyethylene resin composition | Chemistry; Metallurgy | 59 | Expired |
| US4297310A | Process for producing electric conductors coated with crosslinked polyethylene resin | Electricity | 55 | Expired |
| US4456704A | Production of foam | Chemistry; Metallurgy | 54 | Expired |
| US4876146A | Anti-fogging multilayered film and bag produced therefrom for packaging vegetables and fruits | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4343852A | Composite film and packaging material of polypropylene base and surface polymer composition | Emerging Cross-Sectional Technologies | 46 | Expired |
| US4963418A | Thermo-shrinkable polyester type film and tube and processing method for preparing the tube | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4397981A | Ethylene polymer compositions that are flame retardant | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4956209A | Anti-fogging multilayered film and bag produced therefrom for packaging vegetables and fruits | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4996291A | Thermo-shrinkable polyester film | Chemistry; Metallurgy | 37 | Expired |
| US4293608A | Olefin packaging laminate | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4045515A | Film of good tear property on impact | Chemistry; Metallurgy | 30 | Expired |
| US4717516A | Production of polyester shaped product | Chemistry; Metallurgy | 23 | Expired |
| US5932685A | Heat-shrinkable polyester films | Emerging Cross-Sectional Technologies | 21 | Expired |
| US3952073A | Film having good tear property on impact comprising polypropylene and an ethylene polymer | Chemistry; Metallurgy | 20 | Expired |
| US5985387A | Thermo-shrinkable polyester film | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4689369A | Silane-crosslinkable copolymer composition | Chemistry; Metallurgy | 18 | Expired |
| US4264667A | Polyester film | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4070417A | Stretched polyester film from a polymer blend | Performing Operations; Transporting | 13 | Expired |
| US4563316A | Production of polyolefin shaped product | Chemistry; Metallurgy | 11 | Expired |
| US4983675A | Crosslinked molded product | Chemistry; Metallurgy | 9 | Expired |
| US6011090A | Resin composition, conductive roller prepared by molding the composition and electronic photographic cartridge | Chemistry; Metallurgy | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.