Kenchi Ito
61Patents
14h-index
82Co-inventors
87Inventor score
Filing activity: Jun 28, 1989 → Nov 2, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5070488A | Optical integrated circuit and optical apparatus | Physics | 67 | Expired |
| US5481386A | Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the same | Electricity | 46 | Expired |
| US5946281A | Laminated proximity field optical head and optical information recording and reproducing device | Physics | 40 | Expired |
| US9257483B2 | Magnetic memory, method of manufacturing the same, and method of driving the same | Electricity | 36 | Active |
| US5125740A | Method and apparatus for measuring optical constants of a thin film as well as method and apparatus for fabricating a thin film utilizing same | Physics | 35 | Expired |
| US5871881A | Multilayer optical information medium | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6304527A | Near-field optical head and manufacturing method thereof and optical recording/readout system using near-field optical head | Emerging Cross-Sectional Technologies | 32 | Expired |
| US6917088B2 | Magneto-resistive devices | Electricity | 30 | Expired |
| US6370107B1 | Recording medium and recording device | Emerging Cross-Sectional Technologies | 28 | Expired |
| US7209328B2 | Magnetic read head and hard disk drive | Physics | 20 | Expired |
| US5854870A | Short-wavelength laser light source | Electricity | 18 | Expired |
| US5274727A | Second harmonic generator and method of fabrication thereof | Physics | 18 | Expired |
| US6573586B2 | Semiconductor device | Physics | 18 | Expired |
| US7253995B2 | Magnetic head and magnetic recording/reproducing device | Physics | 16 | Expired |
| US5715226A | Flying type optical head integrally formed with light source and photodetector and optical disk apparatus with the same | Electricity | 14 | Expired |
| US5734632A | Optical head using evanescent light and optical data recording/reproducing apparatus and method of using the same | Physics | 13 | Expired |
| US5191624A | Optical information storing apparatus and method for production of optical deflector | Physics | 12 | Expired |
| US6876523B2 | Magnetic head, and the magnetic read-write devices, and the magnetic memory with magnetic sensors | Physics | 12 | Expired |
| US5195070A | Optical information processing apparatus and optical pickup therefor | Physics | 11 | Expired |
| US6934133B2 | Three terminal magnetic head having a magnetic semiconductor and a tunnel magnetoresistive film and magnetic recording apparatus including the head | Physics | 11 | Expired |
| US6809908B1 | Light induction type thin film magnetic head | Physics | 11 | Expired |
| US7443718B2 | Magnetic memory device | Physics | 11 | Active |
| US7349186B2 | Magnetic read head | Physics | 10 | Expired |
| US7596014B2 | Semiconductor device | Physics | 10 | Active |
| US7764538B2 | Magnetic memory and method for writing to magnetic memory | Physics | 10 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.