Patents by Inventor Michel Minfray

Michel Minfray has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Polyether admixture and semi-permeable membranes comprised thereof
    Patent number: 4319008
    Abstract: Semi-permeable, e.g., ultrafiltration membranes are shaped from a solvent solution of an admixture of at least one polyether comprising recurring units of the structural formula:--O--Ar--O--CH.sub.2 --CHOH--CH.sub.2 -- (I)and at least one polyether comprising recurring units of the structural formula:--O--E--R--E'.sub.m O--G--SO.sub.2 --G'-- (II)wherein Ar, E, E', G and G' are divalent aromatic radicals, m is an integer, and R is a valence bond or a member selected from the group comprising --CO--, --O--, --SO.sub.2 -- and a divalent hydrocarbon.
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: March 9, 1982
    Assignee: Rhone-Poulenc Industries
    Inventors: Xavier Marze, Michel Minfray