Chitoshi Shimakawa
18Patents
5h-index
36Co-inventors
66Inventor score
Filing activity: Nov 19, 1986 → Feb 25, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5693738A | Composition for urethane-base plastic lens, urethane-base plastic lens obtained from the composition, and process for the production of the plastic lens | Physics | 66 | Expired |
| US6300464A | Polymerizable composition | Physics | 24 | Expired |
| US5955206A | Polysulfide-based resin composition, polysulfide-based resin, and optical material comprising the resin | Physics | 16 | Expired |
| US6204311A | Polymerizable composition | Physics | 11 | Expired |
| US6458917B2 | Polymerizable composition | Physics | 5 | Expired |
| US4684449A | Process for producing m-hydroxybenzyl alcohol | Chemistry; Metallurgy | 3 | Expired |
| US9227925B2 | Process for producing aldehyde compounds | Chemistry; Metallurgy | 3 | Active |
| US6365707B1 | Polymerizable composition and process for producing optical resin comprising the same | Physics | 2 | Expired |
| US7354989B2 | Thioepoxy based polymerizable composition and method for production thereof | Chemistry; Metallurgy | 1 | Expired |
| US10640605B2 | Xylylenediisocyanate composition, xylylenediisocyanate-modified composition, two-component resin material, and resin | Physics | 0 | Active |
| US5068459A | Process for producing m-phenoxybenzyl alcohol | Chemistry; Metallurgy | 0 | Expired |
| US11254783B2 | Xylylenediisocyanate composition, xylylenediisocyanate-modified composition, two-component resin material, and resin | Physics | 0 | Active |
| US8183404B2 | Process for producing dicyanonorbornane and zerovalent nickel complex catalyst | Chemistry; Metallurgy | 0 | Active |
| US10844010B2 | Process for producing (poly)sulfide compound and process for producing episulfide compound | Physics | 0 | Active |
| US5108558A | Process for the electroreduction of aromatic carboxylic acids | Chemistry; Metallurgy | 0 | Expired |
| US9708260B2 | Method for producing meta-xylylenediamines and method for producing bisamide compound | Chemistry; Metallurgy | 0 | Active |
| US9670148B2 | Method for producing meta-xylylenediisocyanates | Chemistry; Metallurgy | 0 | Active |
| US8183407B2 | Process for production of isocyanate, isocyanate produced by the process, and use of the isocyanate | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.