Patents by Inventor Richard A. Salzstein

Richard A. Salzstein 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).

  • Highly compressible ethylcellulose for tableting
    Patent number: 6592901
    Abstract: A pharmaceutical dosage form composition is composed of an ethylcellulose that has an ethoxyl range lower limit of 49.6%, an a viscosity of less than 53 cps and at least one active pharmaceutical ingredient. This dosage form is highly compressible and compactible forming harder tables or pellets with better release retardation than comparable prior art tablets.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: July 15, 2003
    Assignee: Hercules Incorporated
    Inventors: Thomas Durig, Ronald Haywood Hall, Richard A. Salzstein
  • HIGHLY COMPRESSIBLE ETHYLCELLULOSE FOR TABLETING
    Publication number: 20030077327
    Abstract: A pharmaceutical dosage form composition is composed of an ethylcellulose that has an ethoxyl range lower limit of 49.6%, an a viscosity of less than 53 cps and at least one active pharmaceutical ingredient. This dosage form is highly compressible and compactible forming harder tables or pellets with better release retardation than comparable prior art tablets.
    Type: Application
    Filed: October 15, 2001
    Publication date: April 24, 2003
    Inventors: Thomas Durig, Ronald Haywood Hall, Richard A. Salzstein
  • Composite femoral implant having increased neck strength
    Patent number: 5522904
    Abstract: A femoral implant for a hip prosthesis includes a shaft oriented in a longitudinal direction and a neck extending from said shaft at an acute angle .theta. to the longitudinal direction. The implant includes a plurality of layers of fibers in a matrix, wherein the fibers are substantially unidirectional in each respective layer. The implant is made from a stack of layers of the matrix so that the direction of fibers is unbalanced. At least 50% of the fibers are oriented in the .theta. direction and the remainder of said fibers are oriented in directions other than the .theta. angle.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: June 4, 1996
    Assignee: Hercules Incorporated
    Inventors: James M. Moran, Richard A. Salzstein, Isaac M. Daniel, Douglas S. Cairns, Daniel B. Smith
  • Composite femoral implant having increased neck strength
    Patent number: 5163962
    Abstract: Disclosed is an improvement in a femoral implant for a hip prosthesis involving a longitudinal shaft having a neck extending therefrom at an acute angle .theta. to the longitudinal direction made of layers of carbon fiber in a polymeric matrix, each layer containing unidirectional fibers and the layers arranged such that carbon fibers are oriented in the longitudinal direction and the .+-..theta. direction. The improvement involves balancing at least 50% of the layers in the .+-..theta. direction.
    Type: Grant
    Filed: August 30, 1990
    Date of Patent: November 17, 1992
    Assignee: BHC Laboratories, Inc.
    Inventors: Richard A. Salzstein, Guy R. Toombes