Hiroyasu Ito
69Patents
13h-index
57Co-inventors
87Inventor score
Filing activity: Mar 15, 1982 → Feb 7, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5839019A | Image forming apparatus for copying different groups of document | Physics | 63 | Expired |
| US7037788B2 | Manufacturing method of semiconductor device | Electricity | 49 | Expired |
| US5018603A | Elevator hoist apparatus | Performing Operations; Transporting | 40 | Expired |
| US5430561A | Optical space switch employing 2 parallel diffraction gratings and a polarization rotating element | Electricity | 27 | Expired |
| US4962411A | Semiconductor device with current detecting function | Electricity | 20 | Expired |
| US7420283B2 | Integration type semiconductor device and method for manufacturing the same | Electricity | 18 | Active |
| US5532855A | Optical space switch device | Electricity | 17 | Expired |
| US5259775A | Flat cable connector | Electricity | 16 | Expired |
| US6448139B2 | Manufacturing method of semiconductor device | Electricity | 14 | Expired |
| US5171153A | Flat cable connector | Electricity | 13 | Expired |
| US4985743A | Insulated gate bipolar transistor | Electricity | 13 | Expired |
| US5884120A | Image forming apparatus for forming multiple images on a single sheet | Electricity | 13 | Expired |
| US5047600A | Knob switch device | Performing Operations; Transporting | 13 | Expired |
| US4855542A | Cancelling mechanism for turning signal | Performing Operations; Transporting | 11 | Expired |
| US4859077A | Precision calorimeter | Physics | 10 | Expired |
| US4942273A | Multiple circuit switch with rockable activator and linearly movable contact holder | Electricity | 10 | Expired |
| US4408104A | Lever switch arrangement for motor vehicle | Physics | 10 | Expired |
| US4647736A | Apparatus for returning turn indicator operating lever for vehicle | Performing Operations; Transporting | 8 | Expired |
| US6047146A | Image forming apparatus automatically selecting either color or monochromatic copy mode in accordance with detected color information of images to be reproduced | Electricity | 7 | Expired |
| US8619851B2 | Information distribution apparatus, information distribution method, and information distribution program | Electricity | 6 | Active |
| US5897251A | Image forming apparatus allowing appropriate formation of an image on two-page spread | Electricity | 6 | Expired |
| US5713244A | Robot | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6624044B2 | Method for manufacturing semiconductor device having trench filled with polysilicon | Electricity | 4 | Expired |
| US6960511B2 | Semiconductor device and method of manufacturing the same | Electricity | 4 | Expired |
| US7043573B2 | Method of improving stability and communication efficiency of IrDA communication between host device and peripheral device | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.