Akira Katayama
140Patents
25h-index
152Co-inventors
93Inventor score
Filing activity: May 23, 1978 → Sep 1, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5043748A | Recording apparatus | Physics | 105 | Expired |
| US6128035A | Anti-blur image pickup device | Physics | 89 | Expired |
| US5463443A | Camera for preventing camera shake | Physics | 73 | Expired |
| US5416558A | Camera with shake preventing apparatus | Physics | 66 | Expired |
| US5617122A | Recording apparatus and method for controlling recording head driving timing | Physics | 56 | Expired |
| US5172134A | Ink jet recording head, driving method for same and ink jet recording apparatus | Performing Operations; Transporting | 55 | Expired |
| US5173717A | Ink jet recording head in which the ejection elements are driven in blocks | Performing Operations; Transporting | 53 | Expired |
| US6066428A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Chemistry; Metallurgy | 51 | Expired |
| US5789128A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 50 | Expired |
| US5587754A | Camera with guiding of rectilinear lens movement | Physics | 50 | Expired |
| US5942363A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 49 | Expired |
| US5846680A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 47 | Expired |
| US6102510A | Recording head system for ink jet recording apparatus and method for driving the same | Physics | 46 | Expired |
| US5761936A | Cylindrical lever-type door lock | Emerging Cross-Sectional Technologies | 43 | Expired |
| US6191249A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 41 | Expired |
| US5840454A | Aromatic polycarbonate and electrophotographic photosensitive medium using same | Physics | 40 | Expired |
| US5723243A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 40 | Expired |
| US6194535A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Chemistry; Metallurgy | 38 | Expired |
| US5910561A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 37 | Expired |
| US5353051A | Recording apparatus having a plurality of recording elements divided into blocks | Performing Operations; Transporting | 36 | Expired |
| US6069224A | Electrophotographic photoconductor and aromatic polycarbonate resin for use therein | Physics | 34 | Expired |
| US6384921B1 | Printing method and apparatus and printing system including printing apparatus | Physics | 29 | Expired |
| US5281980A | Ink jet recording head | Performing Operations; Transporting | 29 | Expired |
| US5605064A | Door lock for handicapped persons | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4716421A | Recording apparatus | Performing Operations; Transporting | 26 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.