Hitoshi Maruyama
54Patents
13h-index
72Co-inventors
87Inventor score
Filing activity: Jul 19, 1978 → Mar 23, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4157781A | Self balancing centrifuge | Performing Operations; Transporting | 86 | Expired |
| US4492783A | Binder for obtaining a ceramic molded green body | Chemistry; Metallurgy | 63 | Expired |
| US5355695A | Refrigeration device using hydrofluorocarbon refrigerant | Mechanical Engineering; Lighting; Heating | 53 | Expired |
| US4567221A | Water resistant compositions | Chemistry; Metallurgy | 49 | Expired |
| US4617239A | Paper coating agent | Emerging Cross-Sectional Technologies | 40 | Expired |
| US5420180A | Sized yarn and process therefor | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4620872A | Composite target material and process for producing the same | Electricity | 27 | Expired |
| US5531080A | Refrigerant circulating system | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5349008A | Process for suspension polymerization of vinyl compound | Chemistry; Metallurgy | 21 | Expired |
| US5308910A | Composition, adhesive and aqueous emulsion | Chemistry; Metallurgy | 19 | Expired |
| US4269729A | Microencapsulation process and resulting microcapsules | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5387638A | Emulsion composition | Textiles; Paper | 15 | Expired |
| US4708947A | Water resistant composition and heat-sensitive recording sheet containing the same | Chemistry; Metallurgy | 14 | Expired |
| US5102950A | Water soluble film | Chemistry; Metallurgy | 12 | Expired |
| US5132146A | Method of aqueous ink printing on an ink absorbing layer being coated on a substrate | Textiles; Paper | 12 | Expired |
| US5308911A | Secondary suspending agent for suspension polymerization of vinyl compound | Chemistry; Metallurgy | 11 | Expired |
| US5599870A | Aqueous emulsion | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5134036A | Ethylene-vinyl alcohol copolymers, moldings and laminates | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5331055A | Process for producing vinyl ester polymer and process for producing vinyl alcohol polymer | Chemistry; Metallurgy | 7 | Expired |
| US7751746B2 | Device for driving rotary body with mechanism for dampening fluctuation in rotation velocity | Physics | 7 | Active |
| US5527852A | Paper coating agent | Emerging Cross-Sectional Technologies | 7 | Expired |
| US10503067B2 | Photosensitive resin composition, photosensitive dry film, photosensitive resin coating, and pattern forming process | Physics | 6 | Active |
| US7787815B2 | Image forming device | Physics | 6 | Active |
| US7738813B2 | Corona charger having two charging regions | Physics | 6 | Active |
| US10982053B2 | Polymer containing silphenylene and polyether structures | Electricity | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.