Patents by Inventor W. S. W. Ho

W. S. W. Ho 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).

  • Crosslinked copolymers of aliphatic polyester diols and dianhydrides
    Patent number: 4997906
    Abstract: A crosslinked copolymer composition is derived from an aliphatic polyester, a dianhydride and a diisocyanate. The copolymer membrane has high thermal stability and good aromatic/saturate selectivity and permeability.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: March 5, 1991
    Assignee: Exxon Research & Engineering Company
    Inventors: Warren A. Thaler, W. S. W. Ho, Guido Sartori
  • Separation of olefin mixtures by Cu (I) complexation
    Patent number: 4471152
    Abstract: A process for separating a gaseous alkene mixture into components thereof which comprises contacting the gaseous alkene mixture with a cuprous complex of the formula [Cu(facac)].sub.x L.sub.y where facac is a fluorinated acetylacetonate and L is a stabilizing agent in an organic solvent wherein L is displaced by alkene. Cuprous complexes containing alkene can then be separated provided that the separation factor between alkene complex to be separated and other alkene complexes is at least about 1.05.
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: September 11, 1984
    Assignee: Exxon Research and Engineering Co.
    Inventors: Gerald Doyle, Roy L. Pruett, David W. Savage, W. S. W. Ho