Ryuichi Ishikawa
21Patents
5h-index
37Co-inventors
69Inventor score
Filing activity: May 19, 1980 → Jan 18, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD720437S1 | Well plate | General | 39 | Active |
| US5107757A | Apparatus for dewatering waste material by capillary action | Performing Operations; Transporting | 19 | Expired |
| US4324759A | Apparatus for treating waste gas by irradiation with electron beams | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5288299A | Exhaust gas treating apparatus | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US5304656A | Process for preparing alkylene sulfides | Chemistry; Metallurgy | 6 | Expired |
| US5127345A | Combustion apparatus and combustion control method therefor | Emerging Cross-Sectional Technologies | 5 | Expired |
| USD728750S1 | Well plate | General | 5 | Active |
| US6598508B1 | Optical fiber cutting device | Emerging Cross-Sectional Technologies | 5 | Expired |
| US10927479B2 | Producing device and producing method for chopped fiber bundles, producing device and producing method for fiber-reinforced resin forming materials, cutting blade for carbon fiber bundles, and rotary cutter for carbon fiber bundles | Emerging Cross-Sectional Technologies | 3 | Active |
| US10343352B2 | Fiber-reinforced resin material, molded article, method and device for manufacturing fiber-reinforced resin material, and fiber bundle group inspection device | Emerging Cross-Sectional Technologies | 3 | Active |
| US7013776B2 | Device for cutting optical fiber and a method for cutting optical fiber | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5821382A | Method for manufacturing thiol compounds | Chemistry; Metallurgy | 2 | Expired |
| US5478912A | Process for producing modified polyaminoamide, modified polyaminoamide produced thereby, and epoxy resin curing agent comprising the said modified polyaminoamide | Chemistry; Metallurgy | 1 | Expired |
| US5959147A | Organic sulfide compound and method for production thereof | Chemistry; Metallurgy | 1 | Expired |
| US10889919B2 | Producing device and producing method for chopped fiber bundles, producing device and producing method for fiber-reinforced resin forming materials, cutting blade for carbon fiber bundles, and rotary cutter for carbon fiber bundles | General | 0 | Revoked |
| US10300666B2 | Fiber-reinforced resin material, molded article, method and device for manufacturing fiber-reinforced resin material, and fiber bundle group inspection device | General | 0 | Revoked |
| US5833813A | Method of recovering and dehydrating ethylene sulfide | Performing Operations; Transporting | 0 | Expired |
| US11951692B2 | Fiber-reinforced resin material, molded article, method and device for manufacturing fiber-reinforced resin material, and fiber bundle group inspection device | Emerging Cross-Sectional Technologies | 0 | Active |
| US10247478B2 | Monolithic refractory structure | Emerging Cross-Sectional Technologies | 0 | Active |
| US5763620A | Process for producing alkylene sulfide | Chemistry; Metallurgy | 0 | Expired |
| US11597165B2 | Fiber-reinforced resin material, molded article, method and device for manufacturing fiber-reinforced resin material, and fiber bundle group inspection device | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.