Assignee
ELF UNION
19 patents
Top patents by PatentIndex Score
US4104320AAug 1, 1978
Method of dehydrocyclizing aliphatic hydrocarbons
ELF UNION179 citations93
US4242246ADec 30, 1980
Process for the preparation of bituminous compositions making use of a mother solution containing polymers and sulfur
ELF UNION107 citations92
US4154710AMay 15, 1979
Method of preparing novel bitumen compositions
ELF UNION34 citations92
US4145322AMar 20, 1979
Process for preparing bitumen-polymer compositions
ELF UNION148 citations92
US4201193AMay 6, 1980
Solar energy absorbing roof
ELF UNION42 citations86
US4233186ANov 11, 1980
Catalysts for water dealkylation of aromatic hydrocarbons
ELF UNION25 citations78
US4242143ADec 30, 1980
Process for improving the properties of bituminous products and an improved cast asphalt
ELF UNION11 citations73
US4238451ADec 9, 1980
Process and device to measure the asphaltene content of petroleum products
ELF UNION22 citations72
US4237052ADec 2, 1980
Method for the preparation of bitumens modified by polymers
ELF UNION11 citations71
US4221259ASep 9, 1980
Process for storing calories
ELF UNION18 citations69
US4096908AJun 27, 1978
Heating and cooling enclosure for a gas chromatographic column
ELF UNION23 citations69
US4191702AMar 4, 1980
Preparation of alkyl or aralkyl thiosulfates
ELF UNION8 citations66
US4165631AAug 28, 1979
Instrument for the continuous measurement of viscosity, especially of bitumens
ELF UNION11 citations62
US4238368ADec 9, 1980
Water dealkylation catalyst of aromatic hydrocarbons
ELF UNION3 citations59
US4164490AAug 14, 1979
Bitumen compositions containing polymers
ELF UNION2 citations52
US4206044AJun 3, 1980
Catalytic process for hydro-treating gas oils in the presence of hydrogen
ELF UNION0 citations51
US4206037AJun 3, 1980
Catalytic treatment of gas oils
ELF UNION0 citations51
US4182296AJan 8, 1980
Apparatus permitting an improvement of the carburetion of internal combustion engines
ELF UNION1 citations51
US4311614AJan 19, 1982
Catalysts for water dealkylation of aromatic hydrocarbons
ELF UNION1 citations48