Eiji Ando
33Patents
8h-index
31Co-inventors
75Inventor score
Filing activity: Sep 12, 1974 → Dec 1, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4557850A | Composition for absorption refrigeration | Chemistry; Metallurgy | 29 | Expired |
| US4845021A | Method for recording optical information in optical high density recording mediums | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4737427A | Optical high density recording mediums, method for making same and method for recording optical information in the medium | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4178989A | Solar heating and cooling system | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4794068A | Optical recording medium | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4686169A | Optical recording medium and production of the same | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4207744A | Solar refrigeration system | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4845240A | Optical recording medium and process for producing the same | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5079061A | Optical storage media | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5155230A | Photochromic dinitrated spiropyrans | Physics | 8 | Expired |
| US7637357B2 | Elevator apparatus with sheave rotational speed difference determination for detecting an abnormality | Performing Operations; Transporting | 8 | Expired |
| US8297413B2 | Safety device for elevator and rope slip detection method using drive sheave acceleration | Performing Operations; Transporting | 7 | Active |
| US8261886B2 | Safety device for elevator and rope slip detection method | Performing Operations; Transporting | 7 | Active |
| US4913948A | Optical recording medium | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4803287A | Certain photochromic fulgide compounds and method for their synthesis | Physics | 6 | Expired |
| US4001014A | Electrophotographic photosensitive plate having tellurium present in varying concentrations across its thickness | Physics | 4 | Expired |
| US8177035B2 | Elevator system which controls a value of overspeed | Performing Operations; Transporting | 4 | Active |
| US9708158B2 | Multi-car elevator using an exclusion zone and preventing inter-car collision | Performing Operations; Transporting | 4 | Active |
| US6435316B1 | Rope support device for elevator | Performing Operations; Transporting | 4 | Expired |
| US5360699A | Photochromic material and an optical storage medium using the same | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5241075A | Photochromic spiropyran compounds | Physics | 3 | Expired |
| US5252437A | Photochromic materials having a thin photochromic film and a method for fabricating the same | Chemistry; Metallurgy | 3 | Expired |
| US8177034B2 | Elevator system which controls a value of overspeed | Performing Operations; Transporting | 3 | Active |
| US5110648A | Optical storage medium | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8336677B2 | Safety device for elevator and rope slip detection method | Performing Operations; Transporting | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.