Keizo Ohnishi
9Patents
6h-index
17Co-inventors
60Inventor score
Filing activity: Feb 9, 1979 → Jul 6, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4224360A | Method of welding for exfoliation prevention of stainless steel weld-overlay | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6094150A | System and method of measuring noise of mobile body using a plurality microphones | Physics | 13 | Expired |
| US6907736B2 | Gas turbine combustor having an acoustic energy absorbing wall | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US6041125A | Active acoustic wall | Physics | 10 | Expired |
| US4381940A | Low alloy heat-resisting steel for high temperature use | Chemistry; Metallurgy | 7 | Expired |
| US6688107B2 | Gas turbine combustion device | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US7013647B2 | Outer casing covering gas turbine combustor | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4631170A | Calcium-nickel-misch metal-aluminum quaternary alloy for hydrogen storage | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7613307B2 | Active sound reduction apparatus and active noise insulation wall having same | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.