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Societe National Elf Aquitaine

Societe Na

Active Patents

0

Total Holdings

5

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
EP0283400A1	Catalytic system with a prolonged life span and preservatio…	Expired / Lapsed	1988-03-16	—	0	Details
US4861848A	Polymerization of unsaturated hydrocarbons with an inductio…	Expired / Lapsed	1987-08-21	1989-08-29	22	Details
US4837188A	Catalytic systems having extended duration and conservation…	Expired / Lapsed	1988-03-18	1989-06-06	17	Details
US4550216A	Catalyst for the metathesis of olefins	Expired / Lapsed	1984-06-15	1985-10-29	13	Details
US4230464A	Method for recycling a carrier gas from the trapping system…	Expired / Lapsed	1978-12-13	1980-10-28	15	Details