Koichi Hatada
12Patents
6h-index
6Co-inventors
55Inventor score
Filing activity: Oct 28, 1983 → Sep 22, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4818394A | Separating agent | Chemistry; Metallurgy | 33 | Expired |
| US4861872A | Alkyl-phenylcarbamate derivative of polysaccharide | Chemistry; Metallurgy | 21 | Expired |
| US4619970A | Separation agent | Performing Operations; Transporting | 20 | Expired |
| USRE34457E | Separating agent | General | 17 | Expired |
| US4912205A | Alkyl-substituted phenylcarbamate derivative of polysaccharide | Performing Operations; Transporting | 12 | Expired |
| US5202433A | Polysaccharide derivatives as separating agents | Chemistry; Metallurgy | 12 | Expired |
| US5032277A | Optical resolution with .beta.-1,4-mannan tribenzoate | Performing Operations; Transporting | 6 | Expired |
| US4931184A | Optical resolution with tribenzoyl-b-1,4-chitosan | Performing Operations; Transporting | 3 | Expired |
| US4523000A | Copolymers, process for the preparation thereof and ionizing radiation sensitive resist using such copolymers | Physics | 3 | Expired |
| USRE38435E1 | Separating agent | General | 3 | Expired |
| US5135653A | Optical resolution with .beta.-1,4-xylan dibenzoate | Performing Operations; Transporting | 2 | Expired |
| US4559389A | Graft copolymers, process for the preparation thereof and ionizing radiation sensitive resist using such copolymers | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.