Rhone-Progil
53Patents
0Active
53Granted
38Portfolio score
Filing activity: Sep 8, 1972 → Apr 23, 1979
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3984349A | Modified porous bodies | Performing Operations; Transporting | 37 | Expired |
| US3980613A | Method of manufacturing electrolysis cell diaphragms | Chemistry; Metallurgy | 36 | Expired |
| US4010307A | Coating of paper, cardboard and the like and composition | Emerging Cross-Sectional Technologies | 28 | Expired |
| US3936480A | Additives for improving the dispersing properties of lubricating oil | Chemistry; Metallurgy | 25 | Expired |
| US4061581A | Trimethylolpropane esters useful as base lubricants for motor oils | Chemistry; Metallurgy | 22 | Expired |
| US4110284A | Polyurethane latexes from sulfonate prepolymer, aqueous chain extension process, and coated support | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4124699A | Alumina-based bodies with large pores, produced by agglomeration | Physics | 17 | Expired |
| US4078018A | Graft polymers and compositions of high impact strength | Chemistry; Metallurgy | 16 | Expired |
| US3980545A | Bipolar electrodes with incorporated frames | Chemistry; Metallurgy | 16 | Expired |
| US3978004A | Catalysts for the treatment of gases containing various derivatives of sulphur | Performing Operations; Transporting | 15 | Expired |
| US3969261A | Porous substances having ion exchange properties | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4277585A | Vertical autoclave for bulk polymerization of vinyl chloride | Performing Operations; Transporting | 12 | Expired |
| US4141962A | Catalysts for treating gases containing sulphur compounds | Performing Operations; Transporting | 11 | Expired |
| US4121978A | Method of separating chlorinated aliphatic hydrocarbons from mixtures thereof, by extractive distillation | Chemistry; Metallurgy | 11 | Expired |
| US4096150A | Process for manufacture of tertiary amines | Performing Operations; Transporting | 11 | Expired |
| US4042483A | Electrolysis cell electrode and method of preparation | Chemistry; Metallurgy | 11 | Expired |
| US3974227A | Acid extracted-alkalized/carbon catalyst support with coordination complex catalyst and method of manufacture | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4119645A | Method of preparing phthalic anhydride | Chemistry; Metallurgy | 10 | Expired |
| US4198376A | Vertical autoclave for bulk polymerization of vinyl chloride based polymers and copolymers | Performing Operations; Transporting | 9 | Expired |
| US3933124A | Artificial habitats | Emerging Cross-Sectional Technologies | 9 | Expired |
| US3952022A | Method of condensing phthalic anhydride | Chemistry; Metallurgy | 9 | Expired |
| US3994833A | Oxidation catalyst and process for its preparation | Chemistry; Metallurgy | 8 | Expired |
| US3953381A | Composition containing diamide and halocarbon for treatment of surfaces | Chemistry; Metallurgy | 7 | Expired |
| US3962138A | Cobalt-oxide-based catalytic substances for the oxidation of ammonia | Performing Operations; Transporting | 7 | Expired |
| US3960772A | Agglomerated alumina-based spherical grains | Chemistry; Metallurgy | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.