Junichi Ohta
17Patents
12h-index
12Co-inventors
71Inventor score
Filing activity: Aug 14, 1989 → Feb 21, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5261070A | Method and apparatus for forming unique user identification data at remote terminal for secure transmission of data from host terminal | Electricity | 46 | Expired |
| US5420695A | Image reading and forming apparatus for identifying and correcting the gridlines of a table | Electricity | 40 | Expired |
| US5111514A | Apparatus for converting handwritten characters onto finely shaped characters of common size and pitch, aligned in an inferred direction | Electricity | 40 | Expired |
| US5050221A | Image generating apparatus | Physics | 31 | Expired |
| US5448692A | Digital image processing device involving processing of areas of image, based on respective contour line traces | Electricity | 27 | Expired |
| US4964907A | Sintered bodies and production process thereof | Performing Operations; Transporting | 24 | Expired |
| US5448376A | Image processing apparatus for deleting undesired image from image of document | Electricity | 20 | Expired |
| US5108492A | Corrosion-resistant sintered alloy steels and method for making same | Performing Operations; Transporting | 16 | Expired |
| US5195147A | Image forming apparatus | Physics | 15 | Expired |
| US6163623A | Method and apparatus for recognizing images of documents and storing different types of information in different files | Physics | 15 | Expired |
| US5380476A | Method of debinding for injection molded objects | Performing Operations; Transporting | 14 | Expired |
| US5357602A | "Apparatus for transforming a two-level image into contour vectors by decomposing composite figures into ""unitary"" (open) and closed-loop figures, especially suitable for minimizing memory use while maintaining system processing speed" | Physics | 14 | Expired |
| US5067979A | Sintered bodies and production process thereof | Performing Operations; Transporting | 12 | Expired |
| US5596640A | Digital image forming apparatus with data conversion | Electricity | 9 | Expired |
| US5416467A | Security system utilizing loosely contained optical fiber | Physics | 7 | Expired |
| US6648941B2 | Iron-based mixed powder for powder metallurgy and iron-based sintered compact | Performing Operations; Transporting | 2 | Expired |
| US5677771A | Digital copier that approximates contours of a document image as straight lines or curves | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.