Katsuki Fujiwara
11Patents
5h-index
25Co-inventors
66Inventor score
Filing activity: Apr 27, 1990 → Jan 14, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4985168A | Working fluids | Chemistry; Metallurgy | 15 | Expired |
| US6187219A | Refrigerator and difluoromethane/Pentafluoroethane/1,1,1,2-tetrafluoroethane working fluid | Chemistry; Metallurgy | 10 | Expired |
| US8496845B2 | Refrigerant composition comprising difluoromethane (HFC32), pentafluoroethane (HFC125) and 2, 3, 3, 3-tetrafluoropropene (HFO1234yf) | Chemistry; Metallurgy | 10 | Active |
| US5066410A | Refrigerating machine composition comprising a fluorine-containing polyether oil | Chemistry; Metallurgy | 9 | Expired |
| US6019909A | Fluorinated hydrocarbon compound and process for its preparation, and refrigerator oil and magnetic recording medium lubricant | Chemistry; Metallurgy | 8 | Expired |
| US6183660A | Refrigerant | Chemistry; Metallurgy | 3 | Expired |
| US11124468B2 | Method for producing reaction gas containing (E)-1,2-difluoroethylene | General | 0 | Revoked |
| US11155507B2 | Method for producing reaction gas containing (E)-1,2-difluoroethylene | Chemistry; Metallurgy | 0 | Active |
| US11465955B2 | Method for producing reaction gas containing (E)-1,2-difluoroethylene | Chemistry; Metallurgy | 0 | Active |
| US11053180B2 | Separation method for halogenated unsaturated carbon compound | Chemistry; Metallurgy | 0 | Active |
| US10654775B2 | Separation method for halogenated unsaturated carbon compound | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.