Ryozo Ohta
4Patents
4h-index
13Co-inventors
43Inventor score
Filing activity: Feb 5, 1976 → Mar 1, 1982
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4034994A | Tubular end structure of pipe | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US4474726A | Method of producing a channeled plastic pipe with closed channel ends | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4279853A | Method of forming a socket end on a plastic pipe and a molding device for use of the method | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4412802A | Molding device for forming a socket end on a plastic pipe | Emerging Cross-Sectional Technologies | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.