Hang T. Pham
180Patents
20h-index
84Co-inventors
93Inventor score
Filing activity: Nov 28, 1984 → Apr 9, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6060629A | Azeotrope-like composition of 1,1,1,3,3-pentafluoropropane and hydrogen fluoride | Chemistry; Metallurgy | 91 | Expired |
| US7279451B2 | Compositions containing fluorine substituted olefins | Emerging Cross-Sectional Technologies | 89 | Expired |
| US6858571B2 | Pentafluoropropene-based compositions | Chemistry; Metallurgy | 80 | Expired |
| US5254280A | Refrigeration compositions having polyoxyalkylene glycols with alkylene groups having at least 4 carbon atoms therein | Chemistry; Metallurgy | 60 | Expired |
| US6969701B2 | Azeotrope-like compositions of tetrafluoropropene and trifluoroiodomethane | Chemistry; Metallurgy | 50 | Expired |
| US4975212A | Fluorinated lubricating compositions | Chemistry; Metallurgy | 49 | Expired |
| US7534366B2 | Compositions containing fluorine substituted olefins | Chemistry; Metallurgy | 48 | Expired |
| US7833433B2 | Heat transfer methods using heat transfer compositions containing trifluoromonochloropropene | Chemistry; Metallurgy | 46 | Active |
| US7524805B2 | Azeotrope-like compositions of tetrafluoropropene and hydrofluorocarbons | Chemistry; Metallurgy | 39 | Expired |
| US8148317B2 | Azeotrope-like compositions of tetrafluoropropene and hydrofluorocarbons | Chemistry; Metallurgy | 36 | Active |
| US5663474A | Alkylation process using hydrogen fluoride-containing alkylation catalysts | Chemistry; Metallurgy | 36 | Expired |
| US8444874B2 | Heat transfer methods using heat transfer compositions containing trans-1,3,3,3-tetrafluoropropene | Chemistry; Metallurgy | 34 | Active |
| US8034251B2 | Azeotropic compositions of 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf), 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb), and hydrogen fluoride (HF) | Chemistry; Metallurgy | 27 | Active |
| US5918481A | Process for separating hydrogen fluoride from fluorocarbons | Chemistry; Metallurgy | 26 | Expired |
| US7341984B2 | Azeotrope-like compositions of tetrafluoropropene and trifluoroiodomethane | Chemistry; Metallurgy | 25 | Expired |
| US7825081B2 | Azeotrope-like compositions of tetrafluoropropene and hydrofluorocarbons | Chemistry; Metallurgy | 24 | Active |
| US7803283B2 | Azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFC-1233xf) and 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) | Chemistry; Metallurgy | 22 | Active |
| US5211867A | Azeotrope-like compositions of pentafluoroethane and 1,1,1-trifluoroethane | Chemistry; Metallurgy | 21 | Expired |
| US7074751B2 | Azeotrope-like compositions of tetrafluoropropene and trifluoroiodomethane | Chemistry; Metallurgy | 20 | Expired |
| US7605117B2 | Methods of replacing refrigerant | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US7622435B2 | Methods of replacing refrigerant | Chemistry; Metallurgy | 20 | Expired |
| US8008244B2 | Compositions of tetrafluoropropene and hydrocarbons | Chemistry; Metallurgy | 19 | Active |
| US7465698B2 | Azeotrope-like compositions of difluoromethane and trifluoroiodomethane | Chemistry; Metallurgy | 18 | Expired |
| US8163196B2 | Azeotrope-like compositions comprising 1-chloro-3,3,3-trifluoropropene | Chemistry; Metallurgy | 18 | Active |
| US6001796A | Azeotrope-like compositions of 1,1,1,3,3-pentafluoropropane and hydrogen fluoride | Chemistry; Metallurgy | 17 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.