Hiroshi Nitanda
17Patents
11h-index
35Co-inventors
68Inventor score
Filing activity: Dec 10, 1974 → Oct 31, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4470689A | Image forming apparatus and process unit | Physics | 86 | Expired |
| US4551000A | Process kit and an image forming apparatus using the same | Physics | 68 | Expired |
| US4970533A | Ink jet printer using exchangeable ink cassette, and recording head and ink cassette therefor | Performing Operations; Transporting | 67 | Expired |
| US4017173A | Copying apparatus for copying a plurality of original surfaces with a single scan | Physics | 41 | Expired |
| US3989236A | Copying machine | Performing Operations; Transporting | 38 | Expired |
| US4098551A | Both side copying machine | Physics | 33 | Expired |
| US4139300A | Copying apparatus with variable stop position | Physics | 29 | Expired |
| US4032137A | Feed cassette device | Performing Operations; Transporting | 24 | Expired |
| US4636065A | Molded article with flexible hinge | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4621919A | Metal drum and image holding member using the same | Physics | 15 | Expired |
| US4521099A | Copying apparatus | Physics | 13 | Expired |
| US4089600A | Corona discharge device for electrophotographic copying machine | Physics | 10 | Expired |
| US4456362A | Portable image forming apparatus | Physics | 10 | Expired |
| US3994257A | Developing device in an electrophotographic copying apparatus | Physics | 8 | Expired |
| US4458796A | Normal and reverse rotating mechanism | Performing Operations; Transporting | 5 | Expired |
| US4702586A | Copy board apparatus | Physics | 3 | Expired |
| US4326797A | Copying apparatus capable of changing over the copying mode and the copying magnification | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.