Fumio Kawamura
75Patents
14h-index
121Co-inventors
87Inventor score
Filing activity: Jan 31, 1980 → Jun 28, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5448696A | Map information system capable of displaying layout information | Physics | 100 | Expired |
| US5153073A | Electroluminescent device | Emerging Cross-Sectional Technologies | 52 | Expired |
| US5467444A | Method of three-dimensional display of object-oriented figure information and system thereof | Physics | 47 | Expired |
| US7288152B2 | Method of manufacturing GaN crystals and GaN crystal substrate, GaN crystals and GaN crystal substrate obtained by the method, and semiconductor device including the same | Electricity | 27 | Expired |
| US5981115A | Reversible thermosensitive recording material | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5118986A | Electroluminescent device | Electricity | 23 | Expired |
| US6154243A | Reversible thermal recording method and apparatus therefor | Performing Operations; Transporting | 22 | Expired |
| US6090748A | Reversible thermosensitive recording material and recording method and recording apparatus therefor | Performing Operations; Transporting | 18 | Expired |
| US4654172A | Method for processing radioactive waste resin | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4636335A | Method of disposing radioactive ion exchange resin | Emerging Cross-Sectional Technologies | 17 | Expired |
| US7176115B2 | Method of manufacturing Group III nitride substrate and semiconductor device | Electricity | 17 | Expired |
| US5981429A | Reversible thermosensitive recording medium | Performing Operations; Transporting | 17 | Expired |
| US6878360B1 | Carbon fibrous matter, production device of carbon fibrous matter, production method of carbon fibrous matter and deposit prevention device for carbon fibrous matter | Textiles; Paper | 15 | Expired |
| US5093210A | Electroluminescent device | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4505851A | Process for solidifying radioactive waste pellets | Physics | 14 | Expired |
| US6261992A | Reversible thermosensitive recording material and recording method and apparatus therefor | Performing Operations; Transporting | 13 | Expired |
| US4722043A | Control system with changable time-shared execution of ladder and non-ladder programs | Physics | 12 | Expired |
| US4581162A | Process for solidifying radioactive waste | Physics | 11 | Expired |
| US4578325A | Power storage system using sodium-sulfur batteries | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5955225A | Reversible thermosensitive coloring composition and reversible thermosensitive recording medium using same | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4448711A | Process for producing zeolite adsorbent and process for treating radioactive liquid waste with the zeolite adsorbent | Performing Operations; Transporting | 10 | Expired |
| US7172741B2 | Method for reprocessing spent nuclear fuel | Chemistry; Metallurgy | 9 | Expired |
| US5868821A | Thermally reversible color forming composition and thermally reversible recording medium using the thermally reversible color forming composition | Performing Operations; Transporting | 9 | Expired |
| US4539282A | Electrophotographic photoconductive elements | Physics | 9 | Expired |
| US5891823A | Reversible thermosensitive recording medium | Performing Operations; Transporting | 9 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.