Yoshimitsu Tanabe
46Patents
6h-index
57Co-inventors
72Inventor score
Filing activity: Oct 8, 1982 → Sep 30, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5281570A | Thermochromic materials | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5647896A | Color-developing agents and color-developing sheets | Performing Operations; Transporting | 12 | Expired |
| US5023366A | Salicylic acid copolymers and their metal salts, production process thereof, color-developing agents comprising metal salts of the copolymers, and color-developing sheets employing the agents | Performing Operations; Transporting | 10 | Expired |
| US4783521A | Linear salicylic acid copolymers and their metal salts, production process thereof, color-developing agents comprising metal-resins of the copolymers | Chemistry; Metallurgy | 6 | Expired |
| US6383982B1 | Color developer composition, aqueous dispersion, recording sheet and color developing ink | Performing Operations; Transporting | 6 | Expired |
| US4952648A | Production process of multivalent metal-modified salicylic acid/styrene resin, color-developing agent using the resin and suited for use in pressure-sensitive copying paper sheet and pressure-sensitive copying paper unit employing the agent | Chemistry; Metallurgy | 6 | Expired |
| US4453009A | Process for producing fluorobenzophenone derivatives | Chemistry; Metallurgy | 5 | Expired |
| US5270281A | Heat-sensitive recording materials and phenol compounds | Chemistry; Metallurgy | 5 | Expired |
| US4997874A | Aqueous suspension and preparation method thereof | Performing Operations; Transporting | 5 | Expired |
| US5447901A | Color-developing compositions and their use | Chemistry; Metallurgy | 4 | Expired |
| US4966961A | Polymaleimide from polyarylene polyamine and process for the preparation thereof | Chemistry; Metallurgy | 4 | Expired |
| US5525686A | Polyvalent metal salt of salicyclic acid resin and process for preparing it | Performing Operations; Transporting | 4 | Expired |
| US5326739A | Process for producing 3,5-di(.alpha.-methylbenzyl)salicylic acid derivative, and use of polyvalent-metal-modified product thereof as color developer | Performing Operations; Transporting | 4 | Expired |
| US9511004B2 | Dental material, dental material composition, dental restorative material, and cured product | Chemistry; Metallurgy | 4 | Active |
| US5391806A | Heat-sensitive recording materials and phenol compounds | Chemistry; Metallurgy | 3 | Expired |
| US5077436A | Bis(3-aminophenoxy) aromatics and method of preparing the same | Chemistry; Metallurgy | 3 | Expired |
| US5484948A | Bismaleimide compounds | Chemistry; Metallurgy | 3 | Expired |
| US5206438A | Aromatic diamine compounds, bismaleimide compounds, thermosetting resin forming compositions therefrom, resins therefrom, and methods for their preparation | Chemistry; Metallurgy | 3 | Expired |
| US4701567A | Process for producing 6,6'-dihydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane | Chemistry; Metallurgy | 3 | Expired |
| US5079331A | Heat-resistant epoxy resin composition based on 2-(4-hydroxyphenyl)-2-(4-maleimidophenyl)propane | Chemistry; Metallurgy | 3 | Expired |
| US5260403A | Color-developing composition, aqueous suspension of the composition, and color-developing sheet produced using the suspension and suitable for use in pressure-sensitive copying paper | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5376615A | Color-developing compositions and their use | Chemistry; Metallurgy | 3 | Expired |
| US4692554A | Process for producing 1,3-bis(3-aminophenoxy)benzene | Chemistry; Metallurgy | 3 | Expired |
| US5306688A | Salicylic acid derivatives, the process for preparing the same and the heat-sensitive recording materials comprising thereof | Performing Operations; Transporting | 2 | Expired |
| US5028581A | Odorless multi-valent metal modified products of salicyclic acid copolymers, production processes thereof, and use thereof as color-developing agents for pressure-sensitive copying paper sheets | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.