Tsukasa Doi
39Patents
8h-index
45Co-inventors
75Inventor score
Filing activity: Sep 29, 1992 → Nov 16, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5973400A | Semiconductor device having a copper wiring layer formed on a base via a barrier layer of amorphous tantalum carbide | Electricity | 60 | Expired |
| US5744394A | Method for fabricating a semiconductor device having copper layer | Electricity | 56 | Expired |
| US8752930B2 | Suction-based recovery control method and ink jet printing apparatus | Performing Operations; Transporting | 12 | Active |
| US10771657B2 | Image processing apparatus and image processing method quantizing first and second gradation data to generate first and second quantization data | Electricity | 12 | Active |
| US5459108A | Normal pressure CVD process for manufacture of a semiconductor device through reaction of a nitrogen containing organic source with ozone | Emerging Cross-Sectional Technologies | 10 | Expired |
| US9888149B2 | Image printing apparatus and image printing method | Electricity | 10 | Active |
| US10225439B2 | Image printing apparatus and image printing method | Electricity | 10 | Active |
| USD689448S1 | Light emitting diode | General | 8 | Active |
| US8794737B2 | Inkjet printing apparatus and control method for restore unit | Performing Operations; Transporting | 6 | Active |
| US5241205A | Semiconductor memory device | Electricity | 4 | Expired |
| USD689449S1 | Light emitting diode | General | 4 | Active |
| US6187648A | Method of forming a device isolation region | Electricity | 4 | Expired |
| US10769506B2 | Image processing apparatus and image processing method quantizing gradation data to have a smaller number of gradations | Physics | 4 | Active |
| US9862214B2 | Recording apparatus for reducing discharge position deviation of discharged ink, and recording method for the same | Performing Operations; Transporting | 3 | Active |
| US11565527B2 | Printing method and printing apparatus | Performing Operations; Transporting | 2 | Active |
| US11573750B2 | Threshold matrix generating method | Physics | 2 | Active |
| US9409388B2 | Apparatus and method of ink-jet recording and non-transitory computer-readable storage medium | Performing Operations; Transporting | 1 | Active |
| US11245810B2 | Image processing apparatus, method, and program product for embedding corresponding information in an area overlapping a recognized object | Electricity | 1 | Active |
| US9855774B2 | Recording apparatus and recording method | Performing Operations; Transporting | 1 | Active |
| US10022980B2 | Recording head and inkjet recording apparatus | Performing Operations; Transporting | 1 | Active |
| US11267240B2 | Inkjet printing apparatus, printing method, and storage medium | Performing Operations; Transporting | 1 | Active |
| US8807726B2 | Inkjet recording apparatus | Performing Operations; Transporting | 1 | Active |
| US11141992B2 | Inkjet printing apparatus, printing method, and storage medium | Performing Operations; Transporting | 0 | Active |
| US11625563B2 | Image processing method, image processing apparatus and storage medium | Electricity | 0 | Active |
| US9962950B2 | Recording apparatus and recording method | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.