Mitsuru Hashimoto
99Patents
17h-index
82Co-inventors
87Inventor score
Filing activity: Sep 13, 1974 → Nov 21, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5077142A | Electroluminescent devices | Emerging Cross-Sectional Technologies | 153 | Expired |
| US4297426A | Electrophotographic element with carbazole hydrazone or anile charge transport compounds | Physics | 129 | Expired |
| US4338388A | Electrophotographic element with a phenyhydrazone charge transport layer | Physics | 76 | Expired |
| US4245021A | Electrophotographic element having charge transport layer | Emerging Cross-Sectional Technologies | 51 | Expired |
| US4264695A | Electrophotographic photosensitive material with electron donors and electron acceptors | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4596754A | Electrophotographic printing original plate and electrophotographic plate making process using the printing original plate | Physics | 25 | Expired |
| US4279981A | Electrophotographic elements containing trisazo compounds | Chemistry; Metallurgy | 24 | Expired |
| US5118986A | Electroluminescent device | Electricity | 23 | Expired |
| US4272598A | Electrophotographic material containing disazo compounds | Chemistry; Metallurgy | 23 | Expired |
| US5816134A | Compressor piston and piston type compressor | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4251614A | Novel disazo compounds, process for the preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials | Physics | 20 | Expired |
| US4260672A | Electrophotographic sensitive element having a photoconductive disazo pigment | Emerging Cross-Sectional Technologies | 19 | Expired |
| US7882800B2 | Ring mechanism, and plasma processing device using the ring mechanism | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5370954A | Photoconductive composition containing trisazo and disazo compounds | Physics | 19 | Expired |
| US4251613A | Disazo compounds, process for preparation of same and application of said disazo compounds and analogues thereof to electrophotographic sensitive materials | Chemistry; Metallurgy | 18 | Expired |
| US4299896A | Electrophotographic sensitive materials containing a disazo pigment | Physics | 18 | Expired |
| US4537844A | Electrophotographic element containing disazo compound | Physics | 17 | Expired |
| US4325871A | Ortho-Bis (2-substituted azostyryl) benzene compounds | Chemistry; Metallurgy | 16 | Expired |
| US4365014A | Electrophotographic photoconductor | Physics | 15 | Expired |
| US4390608A | Layered charge generator/transport electrophotographic photoconductor uses bisazo pigment | Physics | 15 | Expired |
| US4314015A | Electrophotographic sensitive materials containing disazo compounds | Physics | 15 | Expired |
| US4400455A | Layered organic electrophotographic photoconductor element comprising bisazo generating and hydrazone transport layers | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4481271A | Layered electrophotographic photoconductor containing a hydrazone | Physics | 13 | Expired |
| US5499515A | Rotary vane-type compressor | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4898800A | Aminobiphenyl charge transporting materials and electrophotographic photoconductors using the same | Physics | 13 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.