Koji Kawai
95Patents
11h-index
117Co-inventors
81Inventor score
Filing activity: Aug 26, 1986 → Feb 6, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5359255A | Discharge tube having a double-tube type structure | Electricity | 111 | Expired |
| US6939928B1 | Metallocene compound, process for producing metallocene compound, olefin polymerization catalyst, process for producing polyolefin, and polyolefin | Emerging Cross-Sectional Technologies | 74 | Expired |
| US7488789B2 | Propylene copolymer, polypropylene composition, and uses thereof, transition metal compounds and catalyst for olefin polymerization | Emerging Cross-Sectional Technologies | 29 | Expired |
| US7449533B2 | Metallocene compound, process for preparing metallocene compound, olefin polymerization catalyst, process for preparing polyolefin, and polyolefin | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7393965B2 | Crosslinked metallocene compound for olefin polymerization and method of polymerizing olefin with the same | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6462855B1 | Light beam scanning apparatus | Electricity | 17 | Expired |
| US6174836A | Reversible thermosensitive recording medium, method of producing the medium, information recording devices using the medium, and image formation and erasing method using the medium | Performing Operations; Transporting | 14 | Expired |
| US7081493B2 | Automotive part made of polypropylene resin composition | Chemistry; Metallurgy | 13 | Expired |
| USD802050S1 | Ink tank container for a printer | General | 13 | Active |
| US6549265B1 | Image formation apparatus and method of stabilizing the emission level of semiconductor laser source used therein | Physics | 12 | Expired |
| US4738083A | Apparatus for supplying articles to a high-speed packing machine | Performing Operations; Transporting | 11 | Expired |
| USD829276S1 | Printer | General | 11 | Active |
| US5191260A | Gas discharge tube providing improved flow line of electrons | Electricity | 11 | Expired |
| US7678934B2 | Propylene copolymer, polypropylene composition and uses thereof, transition metal compound and olefin polymerization catalyst | Emerging Cross-Sectional Technologies | 11 | Active |
| US5057742A | Discharge tube | Electricity | 11 | Expired |
| USD841085S1 | Printer | General | 10 | Active |
| US6509921B2 | Light beam scanning apparatus with multiple sensors and patterns | Electricity | 10 | Expired |
| USD786345S1 | Ink tank cap | General | 9 | Active |
| US6426767B1 | Image forming apparatus for maintaining a constant beam scanning state | Electricity | 9 | Expired |
| USD839342S1 | Printer | General | 8 | Active |
| US6639620B2 | Light beam scanning apparatus | Electricity | 7 | Expired |
| USD828442S1 | Printer | General | 7 | Active |
| US9707768B2 | Plug member and liquid container unit | Performing Operations; Transporting | 7 | Active |
| USD605963S1 | Rotatable infrared sensor | General | 7 | Expired |
| US4685272A | Sheet separating device in a packaging machine | Performing Operations; Transporting | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.