Patents by Inventor Lewis Friedman

Lewis Friedman 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).

  • Sertraline salts and sustained-release dosage forms of sertraline
    Patent number: 6517866
    Abstract: Sustained release dosage forms of sertraline which release sertraline at a rate between 1 mgA/hr and 40 mgA/hr. The dosage forms may exhibit an initial delay period during which sertraline is released at a rate less than 1 mgA/hr.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: February 11, 2003
    Assignee: Pfizer Inc.
    Inventors: Mary Tanya Am Ende, William John Curatolo, Hylar Lewis Friedman, Dwayne Thomas Friesen, Scott Max Herbig, Ravi Mysore Shankar, James Blair West
  • Method and apparatus for the production of cluster ions
    Patent number: 4755344
    Abstract: A method and apparatus for the production of cluster ions, and preferably isotopic hydrogen cluster ions is disclosed. A gas, preferably comprising a carrier gas and a substrate gas, is cooled to about its boiling point and expanded through a supersonic nozzle into a region maintained at a low pressure. Means are provided for the generation of a plasma in the gas before or just as it enters the nozzle.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: July 5, 1988
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Lewis Friedman, Robert J. Beuhler
  • Method of precisely modifying predetermined surface layers of a workpiece by cluster ion impact therewith
    Patent number: 4559096
    Abstract: A method of precisely modifying a selected area of a workpiece by producing a beam of charged cluster ions that is narrowly mass selected to a predetermined mean size of cluster ions within a range of 25 to 10.sup.6 atoms per cluster ion, and accelerated in a beam to a critical velocity. The accelerated beam is used to impact a selected area of an outer surface of the workpiece at a preselected rate of impacts of cluster ions/cm.sup.2 /sec. in order to effect a precise modification in that selected area of the workpiece.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: December 17, 1985
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Lewis Friedman, Robert J. Buehler, Michael W. Matthew, Myron Ledbetter