Keita Takahashi
186Patents
9h-index
185Co-inventors
83Inventor score
Filing activity: Nov 28, 1990 → Jun 13, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5739962A | Lens mount | Physics | 82 | Expired |
| US6169307A | Nonvolatile semiconductor memory device comprising a memory transistor, a select transistor, and an intermediate diffusion layer | Electricity | 31 | Expired |
| US7050751B2 | Image forming system with temporary storage trays between sheet storage units and image forming apparatus | Physics | 30 | Expired |
| US7413177B2 | Sheet processing apparatus, method of controlling the sheet processing apparatus, control program for implementing the method, and storage medium storing the control program | Performing Operations; Transporting | 20 | Expired |
| US5661609A | Lens mount | Physics | 17 | Expired |
| US7651396B2 | Method, storage medium, apparatus, data signal and program for generating image of virtual space | Human Necessities | 11 | Expired |
| US6472707B1 | Semiconductor memory device | Electricity | 10 | Expired |
| US8561978B2 | Image forming system | Performing Operations; Transporting | 9 | Active |
| US6657893B2 | Nonvolatile semiconductor memory device and method for driving the same | Electricity | 9 | Expired |
| US6147903A | Non-volatile semiconductor memory device and method for driving the same | Electricity | 9 | Expired |
| US6310800A | Non-volatile semiconductor memory device and method for driving the same | Electricity | 8 | Expired |
| US6377490B1 | Nonvolatile semiconductor memory device and method for driving the same | Electricity | 7 | Expired |
| US7511900B2 | Lens barrel | Physics | 7 | Active |
| US5732297A | Camera | Physics | 6 | Expired |
| US9927753B2 | Image forming apparatus | Physics | 6 | Active |
| US5678093A | Camera | Physics | 6 | Expired |
| US7391980B2 | Image forming apparatus includes a fixation device control based on a sheet-type when a jam occurs | Physics | 6 | Active |
| US5440364A | Film loader | Physics | 6 | Expired |
| US7389084B2 | Image forming system with temporary storage trays between sheet storage units and image forming apparatus | Physics | 6 | Active |
| US6472281B2 | Method for fabricating semiconductor device using a CVD insulator film | Electricity | 6 | Expired |
| US7965955B2 | Image forming apparatus | Physics | 6 | Active |
| US5987268A | Film loading device having cartridge positioning shaft for camera | Physics | 5 | Expired |
| US7380780B2 | Sheet supplying apparatus and image forming system | Physics | 5 | Expired |
| US6813093B2 | Lens barrel | Physics | 5 | Expired |
| US7568510B2 | Bookbinding apparatus, control method therefor, image forming apparatus, and control method therefor | Performing Operations; Transporting | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.