Itaru Watanabe
38Patents
12h-index
73Co-inventors
84Inventor score
Filing activity: Nov 17, 1975 → Mar 23, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6361136B1 | Detection system, liquid-jet printing apparatus and liquid container | Performing Operations; Transporting | 85 | Expired |
| US4151053A | Cation exchange membrane preparation and use thereof | Chemistry; Metallurgy | 47 | Expired |
| US6468428B1 | Glass material for carrying a photocatalyst, filter device using the same and light irradiating method | Emerging Cross-Sectional Technologies | 46 | Expired |
| US4988035A | Method of liquid phase diffusion bonding of metal bodies | Performing Operations; Transporting | 21 | Expired |
| US6805437B2 | Liquid supply system, ink jet recording head, ink jet recording apparatus and liquid filling method | Performing Operations; Transporting | 20 | Expired |
| US7150519B2 | Ink jet recording apparatus | Performing Operations; Transporting | 19 | Expired |
| US4209367A | Electrolysis of aqueous alkali metal halide solution | Chemistry; Metallurgy | 18 | Expired |
| US4072793A | Reinforced ion-exchange membrane | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6733117B2 | Pressure adjustment chamber, ink-jet recording head having the same, and ink-jet recording device using the same | Performing Operations; Transporting | 14 | Expired |
| US6264303A | Optical linear encoder and recording apparatus using the same | Physics | 13 | Expired |
| US4572748A | Method of manufacturing high tensile strength steel plates | Chemistry; Metallurgy | 13 | Expired |
| US4145594A | Method for longitudinally seam-welding pipe-bland for welded steel pipe from inside along groove | Performing Operations; Transporting | 12 | Expired |
| US4071732A | Method of large current gas shielded arc welding | Performing Operations; Transporting | 11 | Expired |
| US6631966B2 | Recording head and recording apparatus with temperature control | Performing Operations; Transporting | 11 | Expired |
| US4341938A | Method and apparatus for seam-welding steel pipes | Performing Operations; Transporting | 11 | Expired |
| US4020312A | Method of manufacturing thick, high-strength steel pipe for low temperature service | Performing Operations; Transporting | 11 | Expired |
| US7234800B2 | Inkjet recording apparatus | Performing Operations; Transporting | 10 | Expired |
| US6851795B2 | Cartridge with opposed electrical and ink connection portions, and carriage and ink jet recording apparatus for same | Performing Operations; Transporting | 9 | Expired |
| US4034179A | Method of multiple electrode gas shielded arc welding | Performing Operations; Transporting | 8 | Expired |
| US4093568A | Process for production of perfluorocarbon type cation exchange membrane | Chemistry; Metallurgy | 6 | Expired |
| US4155782A | Watch case | Physics | 6 | Expired |
| US4337141A | Cation exchange membrane | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4013868A | Method of multiple gas shielded arc welding | Performing Operations; Transporting | 5 | Expired |
| USD461493S1 | Printing head for printer | General | 4 | Expired |
| US4107503A | Method for eliminating residual magnetism in pipe-blank for welded steel pipe longitudinally seam-welded from inside | Performing Operations; Transporting | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.