Hitoshi Katayama
24Patents
8h-index
57Co-inventors
78Inventor score
Filing activity: Mar 17, 1978 → Jul 24, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5611785A | Luer needle unit and injector | Emerging Cross-Sectional Technologies | 91 | Expired |
| US4274301A | Handle stem fixing device for a bicycle and the like | Emerging Cross-Sectional Technologies | 48 | Expired |
| US5552612A | Transport container for transporting radiation shield member | Human Necessities | 31 | Expired |
| US4354399A | Handle bar fixing device for a bicycle | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4310260A | Fixing device for fixing a handle stem to a front fork at a bicycle | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4775897A | Dubbing method and apparatus for digital recording reproducing apparatus including direct digital outputs | Electricity | 19 | Expired |
| US4791495A | Digital signal recording and reproducing system having an interface for dubbing a color television signal in the component form | Electricity | 11 | Expired |
| US6805997B1 | Battery | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4261666A | Clamp device for a bicycle and the like | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4150859A | Chain wheel and crank for a bicycle | Performing Operations; Transporting | 7 | Expired |
| US6641069B2 | Drag washer of reel for fishing and reel for washing using the same | Human Necessities | 6 | Expired |
| US7854167B2 | Stator core loosening diagnosis device and stator core loosening diagnosis method | Electricity | 6 | Active |
| US5268929A | Method of effectively normalizing an automatic equalizer in multipoint data communications system and arrangement thereof | Electricity | 5 | Expired |
| US8986882B2 | Electrode, and current collector used therefor | Emerging Cross-Sectional Technologies | 4 | Active |
| US6254022A | Reel body of double bearing reel | Human Necessities | 4 | Expired |
| US4682115A | Apparatus for regenerating original signals | Electricity | 2 | Expired |
| US8076805B2 | Rotating electric machine with rotor cooling slots | Electricity | 2 | Active |
| US10732078B2 | Inspection system and inspection method | Electricity | 1 | Active |
| US4670797A | Method of magnetically recording coded digital video signals and an apparatus therefor | Electricity | 1 | Expired |
| US10871453B2 | Inspection device and inspection method | Electricity | 1 | Active |
| US8295702B2 | Optical media converter system | Electricity | 1 | Active |
| US9166455B2 | Rotating electrical machine | Electricity | 0 | Active |
| US12413838B2 | Inspection apparatus and inspection system | Electricity | 0 | Active |
| US8530084B2 | Electrode structure for non-aqueous electrolyte secondary battery, method for producing the same, and non-aqueous electrolyte secondary battery | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.