Etsuko Sugawa
40Patents
15h-index
31Co-inventors
81Inventor score
Filing activity: Apr 16, 1985 → Dec 12, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6908721B2 | POLYHYDROXYALKANOATE HAVING AMIDE GROUP AND SULFONIC GROUP, METHOD OF PRODUCING THE SAME, CHARGE CONTROLLING AGENT CONTAINING NOVEL POLYHYDROXYALAKNAOTE, TONER BINDER, TONER, AND IMAGE FORMING APPARATUS USING THE TONER | Physics | 25 | Expired |
| US6777153B2 | POLYHYDROXYALKANOATE CONTAINING UNIT WITH THIENYL STRUCTURE IN THE SIDE CHAIN, PROCESS FOR ITS PRODUCTION, CHARGE CONTROL AGENT, TONER BINDER AND TONER WHICH CONTAIN THIS POLYHYDROXYALKANOATE, AND IMAGE-FORMING METHOD AND IMAGE-FORMING APPARATUS WHICH MAKE USE OF THE TONER | Emerging Cross-Sectional Technologies | 24 | Expired |
| US6911520B2 | Polyhydroxyalkanoate, method of producing the same, charge controlling agent containing polyhydroxyalkanoate, toner binder and toner, and image formation method and image forming apparatus using toner | Physics | 24 | Expired |
| US6686439B2 | Polyhydroxyalkanoate and method of producing same, and &ohgr;-(2-thienylsulfanyl) alkanoic acid and method of producing same | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6908720B2 | Polyhydroxyalkanoate, its production method, charge control agent containing the polyhydroxyalkanoate, toner binder and toner, and image forming method and image forming apparatus using the toner | Physics | 22 | Expired |
| US7045321B2 | POLYHYDROXYALKANOATE CONTAINING UNIT WITH PHENYLSULFANYL STRUCTURE IN THE SIDE CHAIN, PROCESS FOR ITS PRODUCTION, CHARGE CONTROL AGENT, TONER BINDER AND TONER WHICH CONTAIN NOVEL POLYHYDROXYALKANOATE, AND IMAGE-FORMING METHOD AND IMAGE-FORMING APPARATUS WHICH MAKE USE OF THE TONER | Physics | 22 | Expired |
| US6808907B2 | Method and apparatus for producing polyhydroxyalkanoate | Chemistry; Metallurgy | 21 | Expired |
| US7682765B2 | Toner for developing electrostatic images | Physics | 21 | Active |
| US6803444B2 | Polyhydroxyalkanoate polyester having vinyl phenyl structure in the side chain and its production method | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6808854B2 | POLYHYDROXYALKANOATES HAVING IN ITS SIDE CHAIN PHENYLSULFINYL STRUCTURE AND/OR PHENYL SULFONYL STRUCTURE AND PRODUCTION PROCESS THEREFOR; CHARGE CONTROL AGENT, TONER BINDER AND TONER CONTAINING SAME; AND IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS USING THE TONER | Physics | 19 | Expired |
| US7408017B2 | Polyhydroxyalkanoate containing unit with phenylsulfanyl structure in the side chain, process for its production, charge control agent, toner binder and toner which contain novel polyhydroxyalkanoate, and image forming method and image-forming apparatus which make use of the toner | Physics | 19 | Active |
| US6861496B2 | Polyhydroxyalkonoate and method of producing same, and ω-(2-thienylsulfanyl) alkanoic acid and method of producing same | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6828074B2 | Binder resin containing polyhydroxyalkanoate, toner containing the binder resin, and image-forming method and image-forming apparatus which make use of the toner | Physics | 17 | Expired |
| US6858367B2 | Binder resin containing novel polyhydroxyalkanoate, toner containing the binder resin, and image-forming method and image-forming apparatus which make use of the toner | Physics | 16 | Expired |
| US6855472B2 | POLYHYDROXYALKANOATE, PRODUCING METHOD THEREFOR, CHARGE CONTROL AGENT CONTAINING SUCH POLYHYDROXYALKANOATE, TONER CONTAINING SUCH CONTROL AGENT AND IMAGE FORMING METHOD AND IMAGE FORMING APPARATUS UTILIZING SUCH TONER | Physics | 15 | Expired |
| US6645743B1 | Polyhydroxyalkanoate copolymer containing in molecule unit with vinylphenyl structure in its side chain and method of manufacturing the same | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6861550B2 | Polyhydroxyalkanoate containing 3-hydroxybenzoylalkanoic acid as monomer unit, and method for producing the same | Chemistry; Metallurgy | 14 | Expired |
| US6869782B2 | Polyhydroxyalkanoate that comprises unit having (methylsulfanyl) phenoxy structure in side chain thereof and process for producing the same | Chemistry; Metallurgy | 14 | Expired |
| US6319706A | Process and apparatus for remedying polluted media | Performing Operations; Transporting | 11 | Expired |
| US6635782B2 | Polyhydroxyalkanoate and manufacturing method thereof | Chemistry; Metallurgy | 11 | Expired |
| US6649380B1 | Method for controlling molecular weight of polyhydroxyalkanote constituted on units containing residue of pheynyl-, thienyl-, or cyclohexyl-structure in side chain of molecule | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5906932A | Process for soil remediation and apparatus used therefor | Performing Operations; Transporting | 6 | Expired |
| US4674436A | Film forming apparatus | Performing Operations; Transporting | 6 | Expired |
| US6911521B2 | Polyhydroxyalkanoate that comprises unit having substituted or unsubstituted (phenylmethyl) sulfanyl structure in side chain thereof and process for producing the same | Chemistry; Metallurgy | 4 | Expired |
| US6589396B2 | Method for treating colored liquid and apparatus for treating colored liquid | Emerging Cross-Sectional Technologies | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.