Tamotsu Aruga
78Patents
19h-index
68Co-inventors
87Inventor score
Filing activity: Dec 9, 1983 → Sep 28, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4737190A | Aqueous ink composition for ink-jet recording | Chemistry; Metallurgy | 100 | Expired |
| US4620876A | Aqueous ink for ink-jet printing | Emerging Cross-Sectional Technologies | 90 | Expired |
| US4711668A | Aqueous ink composition | Chemistry; Metallurgy | 83 | Expired |
| US4647310A | Aqueous ink composition for ink jet-recording | Chemistry; Metallurgy | 80 | Expired |
| US4631085A | Aqueous ink composition for ink-jet recording | Chemistry; Metallurgy | 77 | Expired |
| US7919544B2 | Ink-media set, ink composition, ink cartridge, inkjet recording method, inkjet recording apparatus, and ink recorded matter | Chemistry; Metallurgy | 74 | Active |
| US4713113A | Aqueous ink composition for ink-jet recording | Chemistry; Metallurgy | 73 | Expired |
| US4740420A | Recording medium for ink-jet printing | Emerging Cross-Sectional Technologies | 57 | Expired |
| US4793860A | Aqueous ink composition | Chemistry; Metallurgy | 49 | Expired |
| US4957838A | Electrophotographic photoconductor and triphenylamine compounds for use in the same | Physics | 44 | Expired |
| US4554555A | Recording method by use of inks | Chemistry; Metallurgy | 40 | Expired |
| US4680235A | Recording material for ink jet printing | Emerging Cross-Sectional Technologies | 34 | Expired |
| US6027846A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 31 | Expired |
| US6558863B2 | Electrophotographic photoreceptor, electrophotographic image forming method and apparatus using the photoreceptor | Physics | 28 | Expired |
| US4581071A | Aqueous ink for ink jet printing | Chemistry; Metallurgy | 22 | Expired |
| US5344985A | Aldehyde intermediates for the preparation of pyrenylamine derivatives having unsaturated bond | Chemistry; Metallurgy | 21 | Expired |
| US6355390B1 | Electrophotographic photoconductor, production process thereof, electrophotographic image forming method and apparatus, and process cartridge | Physics | 20 | Expired |
| US5459275A | Pyrenylamine derivatives | Chemistry; Metallurgy | 20 | Expired |
| US5457232A | Pyrenylamine derivatives having unsaturated bond | Chemistry; Metallurgy | 20 | Expired |
| US5312707A | Electrophotographic photoconductor and diamine compounds for use in the same | Chemistry; Metallurgy | 19 | Expired |
| US6316577A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 19 | Expired |
| US5599995A | Electrophotographic photoconductor comprising pyrenylamine derivative, the pyrenylamine derivative, intermediate for preparation thereof, and method for preparing the pyrenylamine derivative and the intermediate | Chemistry; Metallurgy | 18 | Expired |
| US8727522B2 | Ultraviolet crosslinking ink and inkjet recording method | Performing Operations; Transporting | 18 | Active |
| US5616805A | Methods for preparing pyrenylamine derivatives and intermediates | Chemistry; Metallurgy | 17 | Expired |
| US8044114B2 | Ink for recording, and ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method using the same | Emerging Cross-Sectional Technologies | 17 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.