Kunihiro Niigata
21Patents
8h-index
41Co-inventors
75Inventor score
Filing activity: Apr 14, 1975 → Oct 26, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4703063A | Sulfamoyl substituted phenethylamine derivatives and process of producing them | Chemistry; Metallurgy | 26 | Expired |
| US5453514A | Pyrazole derivatives and compositions and methods of use as maillard reaction inhibitors | Chemistry; Metallurgy | 26 | Expired |
| US4217305A | Phenylethanolamine derivatives | Chemistry; Metallurgy | 25 | Expired |
| US4731478A | Sulfamoyl-substituted phenethylamine derivatives, their preparation, and pharmaceutical compositions, containing them | Chemistry; Metallurgy | 18 | Expired |
| US4373106A | Sulfamoyl-substituted phenethylamine derivatives and process of producing them | Chemistry; Metallurgy | 11 | Expired |
| US4868216A | Sulfamoyl-substituted phenethylamine derivatives and process of producing them | Chemistry; Metallurgy | 9 | Expired |
| US5447958A | Sulfamoyl-substituted phenethylamine derivatives, their preparation, and pharmaceutical compositions, containing them | Chemistry; Metallurgy | 8 | Expired |
| US4464384A | 2-Phenylimidazo[2,1-b]benzothiazole compounds, salts thereof, process of producing them, and pharmaceutical compositions containing them | Chemistry; Metallurgy | 8 | Expired |
| US5063246A | Phenethylamine derivative compositions and use | Human Necessities | 8 | Expired |
| US4987152A | Use of sulfamoyl-substituted phenethylamine derivatives in treatment of lower urinary tract dysfunction | Chemistry; Metallurgy | 7 | Expired |
| US4973576A | Bisphophonic acid derivatives and pharmaceutical compositions containing the same | Chemistry; Metallurgy | 7 | Expired |
| US5198587A | Phenethylamine derivatives | Chemistry; Metallurgy | 7 | Expired |
| US5391825A | Sulfamoyl substituted phenethylamine intermediates | Chemistry; Metallurgy | 6 | Expired |
| US4127675A | 4-(Alkylamino-2-hydroxypropoxy)-indenes and method of use | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4761500A | Sulfamoyl-substituted phenethylamine derivatives, their preparation, and pharmaceutical compositions, containing them | Chemistry; Metallurgy | 5 | Expired |
| US4558156A | Sulfamoyl-substituted phenethylamine derivatives | Chemistry; Metallurgy | 5 | Expired |
| US4109088A | 2-(Indenyloxymethyl) morpholine derivatives | Chemistry; Metallurgy | 3 | Expired |
| US4880841A | Process of producing phenethylamine derivatives | Human Necessities | 3 | Expired |
| US4045482A | 4-(3-Isopropylamino-2-hydroxypropoxy indene | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US5643931A | Bisoxadiazolidine derivative | Chemistry; Metallurgy | 2 | Expired |
| US5508296A | Bisheterocyclic derivative or salt thereof | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.