Hiroshi Ohta
99Patents
16h-index
129Co-inventors
87Inventor score
Filing activity: Mar 18, 1975 → Jul 5, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4523286A | Apparatus for making diagnosis of valve device in turbine system | Emerging Cross-Sectional Technologies | 93 | Expired |
| US6622301B1 | Parallel program generating method | Physics | 53 | Expired |
| US5448626A | Facsimile mail system having means for storing facsimile signals and telephone signals | Electricity | 46 | Expired |
| USD377198S | Controller for video game machine | General | 44 | Expired |
| US5740604A | Component-mounting apparatus and method | Emerging Cross-Sectional Technologies | 37 | Expired |
| US6316917A | Apparatus having plural electric double layer capacitors and method for adjusting voltages of the capacitors | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5187327A | Superconducting magnetic shield | Emerging Cross-Sectional Technologies | 31 | Expired |
| US7999989B2 | Photochromic film, photochromic lens comprising the same, and method of manufacturing photochromic lens | Chemistry; Metallurgy | 31 | Active |
| US5463729A | Image generation device | Physics | 26 | Expired |
| US7737469B2 | Semiconductor device having superjunction structure formed of p-type and n-type pillar regions | Electricity | 24 | Active |
| US5990779A | Electronic apparatus and surface mounting devices therefor | Electricity | 21 | Expired |
| US6461112B1 | Screw compression apparatus and operation control method thereof | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US5151955A | Optical isolator | Physics | 17 | Expired |
| US8013360B2 | Semiconductor device having a junction of P type pillar region and N type pillar region | Electricity | 17 | Active |
| US4366494A | Josephson junction and a method of making the same | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6859975B2 | Vacuum cleaner | Emerging Cross-Sectional Technologies | 16 | Expired |
| USD753728S1 | Air compressor | General | 15 | Active |
| US7756564B2 | Apparatus for measuring the neuro-magnetic field from a human brain and method for operating the same | Physics | 15 | Expired |
| US5457874A | Mounting apparatus of electronic component | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4070772A | Ground excavating apparatus | Fixed Constructions | 14 | Expired |
| US8716789B2 | Power semiconductor device | Electricity | 13 | Active |
| US5418512A | Superconducting magnetic shield | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4430790A | Method of making a Josephson junction | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5311444A | Absorbance analyzer and data processing method for chromatograph | Physics | 11 | Expired |
| US7881760B2 | Measuring structure for magneto encephalographic equipment with a superconducting magnetic-shield | Emerging Cross-Sectional Technologies | 11 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.