Shigeo Doi
29Patents
10h-index
26Co-inventors
75Inventor score
Filing activity: Dec 23, 1986 → Apr 26, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6302815A | Ball for a ball game | Human Necessities | 106 | Expired |
| US6503162B1 | Ball game ball | Human Necessities | 68 | Expired |
| US6685585B2 | Ball for ball game | Human Necessities | 57 | Expired |
| US4856781A | Game ball | Human Necessities | 43 | Expired |
| US6409043B1 | Sheet conveying apparatus | Performing Operations; Transporting | 35 | Expired |
| US7753813B2 | Ball for ball game and method for manufacturing the same | Human Necessities | 23 | Active |
| US5306001A | Game ball | Emerging Cross-Sectional Technologies | 22 | Expired |
| US7854815B2 | Methods of forming three-dimensional panels for a game ball | Emerging Cross-Sectional Technologies | 14 | Active |
| US7474866B2 | Sealing member, toner supply container, and toner supply system | Physics | 13 | Expired |
| US7427246B2 | Ball for ball game and method for manufacturing the same | Human Necessities | 11 | Expired |
| US7386247B2 | Image forming apparatus | Physics | 6 | Active |
| US10025259B2 | Image forming apparatus having a damper unit which regulates movement of a door unit | Fixed Constructions | 4 | Active |
| US5597432A | Method for making balls for sports | Performing Operations; Transporting | 4 | Expired |
| US5380185A | Ball for ball game and molding apparatus for forming the same | Emerging Cross-Sectional Technologies | 3 | Expired |
| US8422937B2 | Sheet processing apparatus and image forming apparatus | Physics | 3 | Active |
| US8139998B2 | Sheet processing apparatus and image forming apparatus | Performing Operations; Transporting | 2 | Active |
| US7006775B2 | Image forming apparatus with electrically conduction rotary member for electrically connecting a plurality of developing devices to a main body of the apparatus | Physics | 1 | Expired |
| US10073406B2 | Damper device and image forming apparatus | Physics | 1 | Active |
| US8622856B2 | Three-dimensional panels for a game ball and related methods | Emerging Cross-Sectional Technologies | 1 | Active |
| US10676305B2 | Cutting apparatus and image forming apparatus | Physics | 1 | Active |
| US7887036B2 | Sheet processing apparatus and image forming apparatus | Performing Operations; Transporting | 1 | Active |
| US12078956B2 | Image forming apparatus | Physics | 0 | Active |
| US9766586B2 | Image forming apparatus | Physics | 0 | Active |
| US12416895B2 | Image forming apparatus including a plurality of doors that are opened and closed | Physics | 0 | Active |
| US11675310B2 | Image forming apparatus to cool a circuit board inside a duct | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.