Masao Nakagawa
33Patents
11h-index
37Co-inventors
75Inventor score
Filing activity: Jun 6, 1974 → Mar 17, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7583901B2 | Illuminative light communication device | Electricity | 338 | Expired |
| US6256508A | Simultaneous broadcasting system, transmitter and receiver therefor | Electricity | 129 | Expired |
| US4433029A | Expandable thermoplastic polymer beads with method of producing same | Emerging Cross-Sectional Technologies | 39 | Expired |
| US4382604A | Structure of a running system in a work vehicle | Performing Operations; Transporting | 29 | Expired |
| US5373882A | Pneumatic tires | Performing Operations; Transporting | 25 | Expired |
| USD288191S | Motorcycle tire | General | 16 | Expired |
| US6772619B2 | Measuring apparatus and method for correcting errors in a machine | Physics | 14 | Expired |
| US4722944A | Expandable particles of vinyl chloride resin composition for beads-foaming | Chemistry; Metallurgy | 13 | Expired |
| US6940569B2 | Information processing apparatus | Physics | 12 | Expired |
| US5289496A | Method and system for radio communication | Electricity | 12 | Expired |
| US4766940A | Pneumatic radial tire having an excellent steering stability | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7929867B2 | Emergency lamp and wireless emergency lamp data transmission system | Electricity | 11 | Active |
| US3960787A | Process for preparing foamable synthetic resin granules | Chemistry; Metallurgy | 10 | Expired |
| US4368218A | Method of making expandable thermoplastic polymer beads | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6771333B2 | Information processing apparatus | Physics | 9 | Expired |
| US4618663A | Process for preparing .alpha.-methylstyrene-acrylonitrile copolymers | Chemistry; Metallurgy | 7 | Expired |
| US4746706A | Polyolefin particles and process for preparing the same | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7514139B2 | Polyol component for polyurethane formation comprising anionic diol and composition | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6203254A | Parallel mechanism machining device | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5463892A | Hydraulic press | Performing Operations; Transporting | 5 | Expired |
| US4430450A | Expandable thermoplastic polymer particles and process for producing the same | Chemistry; Metallurgy | 4 | Expired |
| US4438222A | Heat resistant expandable plastic particles and molded articles produced therefrom | Chemistry; Metallurgy | 3 | Expired |
| US4424286A | Expanded shaped article comprising a heat resistant synthetic resin | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4315636A | Working vehicle | Performing Operations; Transporting | 3 | Expired |
| US4560735A | Process for preparing copolymer | Chemistry; Metallurgy | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.