Hiroshi Hachiya
42Patents
7h-index
28Co-inventors
69Inventor score
Filing activity: Mar 29, 1991 → Aug 8, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6017455A | Porous membrane | Performing Operations; Transporting | 26 | Expired |
| US5997741A | Process for preparing a polyether ether ketone membrane | Performing Operations; Transporting | 20 | Expired |
| US5225526A | Stabilized aromatic polycarbonate composition and process for producing same | Chemistry; Metallurgy | 14 | Expired |
| US7658817B2 | Industrial evaporation apparatus | Emerging Cross-Sectional Technologies | 12 | Active |
| US5932683A | Polycarbonate comprising different kinds of bonding units and process for the preparation thereof | Chemistry; Metallurgy | 11 | Expired |
| US6512077B1 | Polycarbonate-base flame-retardant resin composition | Chemistry; Metallurgy | 9 | Expired |
| US7060780B2 | Moldings of flame-retardant aromatic polycarbonate resin compositions | Chemistry; Metallurgy | 8 | Expired |
| US5852156A | Polycarbonate composition | Chemistry; Metallurgy | 7 | Expired |
| US6417319B1 | Flame-retardant polycarbonate resin composition with excellent melt flowability | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6277945A | Method for producing an aromatic polycarbonate | Chemistry; Metallurgy | 7 | Expired |
| US7812189B2 | Industrial process for production of high-purity diphenyl carbonate | Emerging Cross-Sectional Technologies | 6 | Active |
| US7307114B2 | Polycarbonate resin composition for use in the production of a substrate for an optical information medium | Physics | 6 | Expired |
| US6107440A | Aromatic polycarbonate composition | Chemistry; Metallurgy | 6 | Expired |
| US6117969A | Polycarbonate resin compositions | Chemistry; Metallurgy | 4 | Expired |
| US8044226B2 | Process for production of high-purity diaryl carbonate | Emerging Cross-Sectional Technologies | 4 | Active |
| US7622601B2 | Process for production of high-purity diaryl carbonate | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6833397B2 | Method for producing a flame retardant polycarbonate resin composition | Performing Operations; Transporting | 3 | Expired |
| US5912289A | Aromatic polycarbonate composition having improved thermal stability, and method for producing the same | Chemistry; Metallurgy | 3 | Expired |
| US7479258B2 | Method for producing an aromatic polycarbonate | Performing Operations; Transporting | 3 | Expired |
| US5762851A | Method of producing polycarbonate pellets | Performing Operations; Transporting | 3 | Expired |
| US5719254A | Discoloration-insusceptible polycarbonate composition | Chemistry; Metallurgy | 2 | Expired |
| US7531616B2 | Process for industrial production of an aromatic carbonate | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6747080B2 | Polycarbonate resin composition for the production of a substrate for an optical information medium | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7563858B2 | Method for stably producing an aromatic polycarbonate | Chemistry; Metallurgy | 2 | Expired |
| US5972273A | Method for producing a homogeneous polycarbonate composition | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.