Kaoru Hamada
43Patents
7h-index
58Co-inventors
72Inventor score
Filing activity: Jul 6, 1979 → Feb 1, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5710094A | Reversible multi-color thermal recording medium | Physics | 66 | Expired |
| US6093678A | Spontaneously color changing type thermal sensitive recording medium | Performing Operations; Transporting | 20 | Expired |
| US6410479B1 | Thermally sensitive recording medium | Performing Operations; Transporting | 13 | Expired |
| US4306497A | Dot matrix type printer | Performing Operations; Transporting | 10 | Expired |
| US5811369A | Thermal recording medium | Performing Operations; Transporting | 9 | Expired |
| US5711163A | Heat pump apparatus | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5665675A | Aminobenzenesulfonamide derivative and recording medium using the same | Performing Operations; Transporting | 8 | Expired |
| US7312176B2 | Thermally sensitive recording medium | Performing Operations; Transporting | 5 | Expired |
| US6385777B1 | Clothes-adjusting apparatus | Human Necessities | 5 | Expired |
| US5661100A | Urea (thiourea) derivative and thermal recording sheet using the same | Chemistry; Metallurgy | 5 | Expired |
| US10447890B2 | Image reading apparatus with shading correction | Electricity | 4 | Active |
| US7799963B2 | Cracking tube having helical fins | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US10148851B2 | Image reading apparatus and image reading method | Electricity | 4 | Active |
| US7655287B2 | Inkjet recording medium | Performing Operations; Transporting | 3 | Expired |
| US6258747A | Thermally sensitive recording medium | Performing Operations; Transporting | 3 | Expired |
| US6645910B1 | Thermally sensitive recording medium | Performing Operations; Transporting | 3 | Expired |
| US5811368A | Thermal sensitive recording medium | Performing Operations; Transporting | 3 | Expired |
| US5733843A | Thermal sensitive recording sheet | Performing Operations; Transporting | 2 | Expired |
| US5707778A | Optical recording medium | Emerging Cross-Sectional Technologies | 2 | Expired |
| US10447876B2 | Image reading apparatus | Electricity | 2 | Active |
| US10536599B2 | Original reading apparatus | Electricity | 1 | Active |
| US10477061B2 | Image forming apparatus with two-sided copying and variable image data transfer clock frequency | Electricity | 1 | Active |
| US10154155B2 | Image reading apparatus capable of determining opening-closing state of original conveyance device and image forming apparatus equipped with image reading apparatus | Electricity | 1 | Active |
| US7378374B2 | Thermally sensitive recording medium | Performing Operations; Transporting | 0 | Expired |
| US10261732B2 | Image forming apparatus having double-sided printing and control method of the same | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.