Patents by Inventor Paul J. Shannon

Paul J. Shannon 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).

  • Differential acid dyeing of polyamide
    Patent number: 4722979
    Abstract: A method for producing a differentially dyeable polyamide is disclosed. Polyamides produced according to the process of this invention will have distinct areas thereon that show varying degrees of receptivity to acid dyes and can thereby be differentially dyed using a single dyebath.
    Type: Grant
    Filed: February 12, 1986
    Date of Patent: February 2, 1988
    Assignee: Armstrong World Industries, Inc.
    Inventors: Xuan T. Phan, Paul J. Shannon, Anne L. Schwartz
  • Polymeric liquid crystals
    Patent number: 4637896
    Abstract: The present invention concerns novel cholesteric liquid crystalline monomers and combinations thereof with materials that will support formation of a mixture which demonstrates cholesteric liquid crystalline properties. These materials may be formed as coatings, heated or cooled to a desired temperature to cause the cholesteric coating to exhibit a desired optical response, and photopolymerized to essentially fix the optical characteristics of the resulting polymer.
    Type: Grant
    Filed: October 12, 1984
    Date of Patent: January 20, 1987
    Assignee: Armstrong World Industries, Inc.
    Inventor: Paul J. Shannon
  • Liquid crystalline materials useful to prepare polymeric films
    Patent number: 4614619
    Abstract: The present invention concerns novel cholesteric liquid crystalline monomers which are useful to form polymeric materials having unique optical properties.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: September 30, 1986
    Assignee: Armstrong World Industries, Inc.
    Inventor: Paul J. Shannon
  • Differential acid dyeing of polyamide reacted with N-halogenating agent
    Patent number: 4603178
    Abstract: A method for producing a differentially dyeable polyamide is disclosed. The method comprises selectively reacting a polyamide's free amines with an N-halogenating agent. Polyamides produced according to the process of this invention will have distinct areas thereon that show varying degrees of receptivity to acid dyes and can thereby be differentially dyed using a single dyebath.
    Type: Grant
    Filed: November 1, 1984
    Date of Patent: July 29, 1986
    Assignee: Armstrong World Industries, Inc.
    Inventors: Xuan T. Phan, Paul J. Shannon, Anne L. Schwartz
  • Acrylate and methacrylate polymers and processes for preparing them
    Patent number: 4581430
    Abstract: N-chlorolactams, -amides, and -carbamates are photolyzed in alcoholic solution to provide N-(alpha-alkoxyalkyl)-substituted derivatives. These derivatives are interacted with hydroxylated acrylate or methacrylate esters to yield monomers which may be polymerized in the presence of an appropriate initiator. Many of the monomers are water soluble and are useful to prepare polymeric films having unique properties.
    Type: Grant
    Filed: July 20, 1984
    Date of Patent: April 8, 1986
    Assignee: Armstrong World Industries, Inc.
    Inventors: Xuan T. Phan, Paul J. Shannon
  • Acrylate and methacrylate polymers and processes for preparing them
    Patent number: 4525302
    Abstract: N-chlorolactams, -amides, and -carbamates are photolyzed in alcoholic solution to provide N-(alpha-alkoxyalkyl)-substituted derivatives. These derivatives are interacted with hydroxylated acrylate or methacrylate esters to yield monomers which may be polymerized in the presence of an appropriate initiator. Many of the monomers are water soluble and are useful to prepare polymeric films having unique properties.
    Type: Grant
    Filed: July 20, 1984
    Date of Patent: June 25, 1985
    Assignee: Armstrong World Industries, Inc.
    Inventors: Xuan T. Phan, Paul J. Shannon
  • Photochemical process for preparing alkoxy substituted compounds
    Patent number: 4492619
    Abstract: N-Chlorolactams, -amides, and -carbamates are photolyzed in alcoholic solution to provide N-(alpha-alkoxyalkyl)-substituted derivatives. These derivatives are interacted with hydroxylated acrylate or methacrylate esters to yield monomers which may be polymerized in the presence of an appropriate initiator. Many of the monomers are water soluble and are useful to prepare polymeric films having unique properties.
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: January 8, 1985
    Inventors: Xuan T. Phan, Paul J. Shannon