Kohei Ito
36Patents
6h-index
53Co-inventors
72Inventor score
Filing activity: Jan 19, 1972 → Oct 6, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5789902A | Bi-direction current control circuit for monitoring charge/discharge of a battery | Electricity | 29 | Expired |
| US5359452A | Lithium tantalate monocrystal, monocrystal substrate, and photo element | Physics | 19 | Expired |
| US5854870A | Short-wavelength laser light source | Electricity | 18 | Expired |
| US4992760A | Magnetostatic wave device and chip therefor | Electricity | 10 | Expired |
| US8160772B2 | Drive control apparatus, drive control method, drive control program, and recording medium | Performing Operations; Transporting | 8 | Active |
| US5412502A | Second harmonic generating element and the production method thereof | Physics | 8 | Expired |
| US6331699A | Microwave heating apparatus requiring reduced power in a standby state | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4031811A | Electro-hydraulic pulse motor | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5357898A | Method of producing single crystal and apparatus therefor | Chemistry; Metallurgy | 5 | Expired |
| US8307927B2 | Rotating electrical machine control system and vehicle drive system including rotating electrical machine control system | Emerging Cross-Sectional Technologies | 4 | Active |
| US9065322B2 | Inverter device | Electricity | 4 | Active |
| US9018807B2 | Inverter device | Electricity | 3 | Active |
| US5189383A | Circuit element utilizing magnetostatic wave | Electricity | 3 | Expired |
| US8427133B2 | Current detection apparatus | Physics | 3 | Active |
| US7952352B2 | Method of locally measuring mobility of protic solvent in sample, instrument of locally measuring mobility of protic solvent in sample, measuring instrument locally measuring behavior of protic solvent in sample based on magnetic | Physics | 3 | Active |
| US5053734A | Magnetostatic wave device | Electricity | 3 | Expired |
| US7808161B2 | Piezoelectric ceramic composition and piezoelectric device | Chemistry; Metallurgy | 2 | Active |
| US5192928A | Circuit element having ferrimagnetic film with deviated end surfaces for suppressing spurious magnetostatic wave resonance modes | Electricity | 2 | Expired |
| US10826461B2 | Acoustic wave device | Electricity | 2 | Active |
| US5371482A | Magnetostatic wave device containing acoustic wave absorbing layer | Electricity | 2 | Expired |
| US5168254A | Magnetostatic wave device with minimized higher order mode excitations | Electricity | 2 | Expired |
| US8826727B2 | Gas sensor | Physics | 1 | Active |
| US8421450B2 | Current detection device | Physics | 1 | Active |
| US6998591B2 | High frequency heating apparatus with displacement identifiable remaining heating duration and phase control based thereon | Electricity | 1 | Expired |
| US8398884B2 | Method for producing electrode material for fuel cell, electrode material for fuel cell, and fuel cell using the electrode material for fuel cell | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.