Patents by Inventor Diosie Velazques

Diosie Velazques 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).

  • Filtration membranes and method of making the same
    Patent number: 5108607
    Abstract: Microporous membranes can be prepared which comprise a polymer which is a hydrophobic polymer in bulk form and which has an equilibrium water absorption from about 2% to about 4%, but is hydrophilic when precipitated as a membrane. The membranes are further characterized by high water flow rates at any given bubble point.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: April 28, 1992
    Assignee: Gelman Sciences, Inc.
    Inventors: Menaham Kraus, Mark Heisler, Inessa Katsnelson, Diosie Velazques
  • Filtration membranes and method of making the same
    Patent number: 4964990
    Abstract: Microporous membranes can be prepared which comprise a polymer which is a hydrophobic polymer in bulk form and which has an equilibrium water absorption from about 2% to about 4%, but is hydrophilic when precipitated as a membrane. The membranes are further characterized by high water flow rates at any given bubble point.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: October 23, 1990
    Assignee: Gelman Sciences, Inc.
    Inventors: Menaham Kraus, Mark Heisler, Inessa Katsnelson, Diosie Velazques
  • Filtration membranes and method of making the same
    Patent number: 4900449
    Abstract: Microporous membranes can be prepared which comprise a polymer which is a hydrophobic polymer in bulk form and which has an equilibrium water absorption from about 2% to about 4%, but is hydrophilic when precipitated as a membrane. The membranes are further characterized by high water flow rates at any given bubble point.
    Type: Grant
    Filed: May 20, 1987
    Date of Patent: February 13, 1990
    Assignee: Gelman Sciences
    Inventors: Menaham Kraus, Mark Heisler, Inessa Katsnelson, Diosie Velazques