Addison M. Smith
22Patents
10h-index
36Co-inventors
75Inventor score
Filing activity: Mar 26, 1980 → Oct 17, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5155082A | Catalyst for the manufacture of chlorofluorocarbons, hydrochlorofluorocarbons and hydrofluorocarbons | Chemistry; Metallurgy | 50 | Expired |
| US5902914A | Process for the preparation of halogenated alkanes | Chemistry; Metallurgy | 33 | Expired |
| US6274779A | Purified 1,1,1,3,3,3-hexafluoropropane and method for making same | Chemistry; Metallurgy | 29 | Expired |
| US5346595A | Process for the purification of a pentafluoroethane azeotrope | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4298765A | Purification of phenol with reduced energy consumption | Chemistry; Metallurgy | 24 | Expired |
| US4828818A | Chromium aerogel method of producing same and fluorinating process utilizing same | Chemistry; Metallurgy | 22 | Expired |
| US4319060A | Process for producing 1,2-dichloro-1,1,2,2-tetrafluoroethane substantially free of 1,1-dichloro-1,2,2,2-tetrafluoroethane | Chemistry; Metallurgy | 19 | Expired |
| US5902912A | Process for preparing hydrofluorocarbons | Performing Operations; Transporting | 18 | Expired |
| US4950816A | Purification of 1,1-dichloro-1-fluoroethane | Chemistry; Metallurgy | 16 | Expired |
| US4912270A | Chromia aerogel, method of producing same and fluorination process utilizing same | Chemistry; Metallurgy | 11 | Expired |
| US5763708A | Process for the production of difluoromethane | Chemistry; Metallurgy | 10 | Expired |
| US5545778A | Single stage process for producing hydrofluorocarbons from perchloroethylene | Chemistry; Metallurgy | 9 | Expired |
| US5336377A | Process for removing 2-chloro-1,1-difluoroethylene from 1,1,1,2-tetrafluoroethane and co-producing 2-chloro-1,1,1,2-tetrafluoroethane | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6365580B1 | Process for the production of difluoromethane | Chemistry; Metallurgy | 5 | Expired |
| US5190626A | Process for removing vinylidene chloride and other unsaturated compounds from 1,1-dichloro-1-fluoroethane | Chemistry; Metallurgy | 5 | Expired |
| US7371905B2 | Method of producing hydrofluorocarbons | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5856595A | Purified 1,1,1,3,3,3-hexafluoropropane and method for making same | Chemistry; Metallurgy | 4 | Expired |
| US5744661A | Purification of 1, 1-difluoroethane | Chemistry; Metallurgy | 3 | Expired |
| US6099694A | Azeotrope-like compositions of difluoromethane and chlorine | Chemistry; Metallurgy | 2 | Expired |
| US6268540A | Catalyst and process for the fluorination of hydrohalomethanes | Chemistry; Metallurgy | 1 | Expired |
| US5654494A | Process for the manufacture of 1,1,1,2-tetrafluoroethane | Chemistry; Metallurgy | 1 | Expired |
| US6844474B1 | Process for the production of difluoromethane | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.