Kenji Kawamura
75Patents
9h-index
105Co-inventors
81Inventor score
Filing activity: Jun 20, 1983 → Jan 8, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6844110B2 | Lithium secondary cell and assembly thereof | Emerging Cross-Sectional Technologies | 39 | Expired |
| US6884541B2 | Lithium secondary battery and manufacturing method thereof | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4509090A | Coaxial lightning arresting structure | Electricity | 23 | Expired |
| US4544984A | Coaxial lightning arresting structure | Emerging Cross-Sectional Technologies | 18 | Expired |
| US9499460B2 | Alcohol production method | Chemistry; Metallurgy | 14 | Active |
| US7131873B2 | Electrical connector capable of preventing plugging error | Electricity | 12 | Expired |
| US7496378B2 | Portable information terminal comprising a camera with a fixed and movable display | Electricity | 12 | Expired |
| US7501202B2 | Lithium secondary cell and assembly thereof | Emerging Cross-Sectional Technologies | 10 | Active |
| US8951367B2 | Ultra high strength cold rolled steel sheet having excellent bendability | Chemistry; Metallurgy | 9 | Active |
| US8297035B2 | Normal pressure cationic dyeable polyester and fiber | Emerging Cross-Sectional Technologies | 8 | Active |
| US7882685B2 | Gripper for an automatic bag filling apparatus | Performing Operations; Transporting | 7 | Active |
| US7919194B2 | High strength steel sheet having superior ductility | Emerging Cross-Sectional Technologies | 7 | Active |
| US7175936B2 | Lithium secondary battery and assembled structure of lithium secondary batteries | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8740175B2 | Filling channel opening and closing device for liquid product filling apparatus | Performing Operations; Transporting | 4 | Active |
| US8261785B2 | Gripper for an automatic bag filling apparatus | Performing Operations; Transporting | 3 | Active |
| US9790140B2 | Method for producing butadiene | Chemistry; Metallurgy | 3 | Active |
| US7214250B2 | Lithium secondary cell | Emerging Cross-Sectional Technologies | 3 | Expired |
| US9018424B2 | Method of producing diol or triol | Chemistry; Metallurgy | 3 | Active |
| US7965143B2 | Digital phase detector and phase-locked loop | Electricity | 3 | Active |
| US10196352B2 | Method for producing epsilon-caprolactam | Emerging Cross-Sectional Technologies | 2 | Active |
| US9297052B2 | High strength cold rolled steel sheet with excellent deep drawability and material uniformity in coil and method for manufacturing the same | Chemistry; Metallurgy | 2 | Active |
| US9919822B2 | Gas charging apparatus for a bag equipped with gas compartment portion | Performing Operations; Transporting | 2 | Active |
| US6984849B2 | Optical cap for semiconductor device | Electricity | 2 | Expired |
| US7200426B2 | Folding cellular telephone | Electricity | 2 | Expired |
| US6547107B2 | Filling amount adjustment device for a liquid-form substance filling machine | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.