Hiroshi Ohya
6Patents
5h-index
6Co-inventors
56Inventor score
Filing activity: May 1, 1980 → Apr 22, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6749233B2 | Sleeve-type pipe joint | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US7118136B2 | Sleeve-type pipe joint | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5150923A | Plastic pipe joint assembly for joining sections of plastic pipe | Performing Operations; Transporting | 8 | Expired |
| US4700376A | Automatic telephone answering apparatus with remote control signal muting | Electricity | 6 | Expired |
| US5347819A | Method and apparatus for manufacturing superfluidity helium | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4322758A | Fluorescent indicator | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.