Patents by Inventor Thomas B. Garrett

Thomas B. Garrett 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).

  • Optical storage system having expanded capacity
    Patent number: 4780383
    Abstract: The present invention relates to a process for optical storage which utilizes a photopolymerizable liquid crystalline material having cholesteric optical properties. By selectively adjusting the reflectance or transmittance properties of the recording medium such that specific wavelength bands of light are reflected or transmitted, and then substantially permanently fixing the reflectance or transmittance characteristics of the film by photopolymerization, multiple wavelength-dependent information can be stored in each dot. Accordingly, the capacity of the recording medium is substantially expanded when compared to conventional optical storage media.
    Type: Grant
    Filed: February 27, 1985
    Date of Patent: October 25, 1988
    Assignee: Armstrong World Industries, Inc.
    Inventors: Thomas B. Garrett, Lynn M. Reslewic, James A. Tshudy
  • 3-Substituted- 7-dialkylamino-spiro(2H-1-benzopyran-2,3'-(3H)-naphtha(2,1-b)pyrans)
    Patent number: 4384094
    Abstract: Substituted spiro 2H-1-benzopyran-2,3'-(3H)-naphtho(2,1-b)pyrans particularly suitable for use as precursors to stable colored pyrylium salts are disclosed.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: May 17, 1983
    Assignee: Armstrong World Industries, Inc.
    Inventors: John E. Herweh, Thomas B. Garrett, Alan B. Magnusson
  • 3-Substituted-7-alkoxy-spiro(2H -1-benzopyran-2,3'-(3H)-naphtho(2,1-B)pyrans)
    Patent number: 4382134
    Abstract: Substituted spiropyrans particularly suitable for use as precursors to stable pyrylium salts are disclosed.
    Type: Grant
    Filed: October 22, 1981
    Date of Patent: May 3, 1983
    Assignee: Armstrong World Industries, Inc.
    Inventors: John E. Herweh, Thomas B. Garrett, Alan B. Magnusson
  • 3-Substituted-7-alkoxy-2,2'-Spirobi[2H-1-benzopyrans]
    Patent number: 4348508
    Abstract: Substituted Spirobi[2H-1-benzopyrans] particularly suitable for use as precursors to stable colored pyrylium salts are disclosed.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: September 7, 1982
    Assignee: Armstrong World Industries, Inc.
    Inventors: John E. Herweh, Thomas B. Garrett, Alan B. Magnusson
  • Process for fixing photo-induced colored derivatives of spiropyrans and compositions therefor
    Patent number: 4346186
    Abstract: The present invention relates to processes for fixing photo-induced colored derivatives of spiropryans in solvent and solid solutions, and to compositions in which said photo-induced colored derivatives may be fixed, said processes comprising irradiating solvent or solid solutions comprising a spiropryan and an iodonium salt.
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: August 24, 1982
    Assignee: Armstrong World Industries, Inc.
    Inventors: Thomas B. Garrett, John E. Herweh, Alan B. Magnusson, Normal L. Miller
  • 7-Dimethylamino-3-substituted-2,2'-spirobi[2H-1-benzopyrans]
    Patent number: 4342696
    Abstract: Substituted spirobi[2H-1-benzopyrans] particularly suitable for use as precursors to stable colored pyrylium salts are disclosed.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: August 3, 1982
    Assignee: Armstrong World Industries, Inc.
    Inventors: Thomas B. Garrett, John E. Herweh, Alan B. Magnusson
  • Catalytic process for the preparation of phosphazene polymers
    Patent number: 4116891
    Abstract: A process is disclosed for the catalytically-induced preparation of phosphazene polymers. Cyclic halophosphazenes are polymerized in the presence of a catalytically sufficient amount of a Lewis acid catalyst.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: September 26, 1978
    Assignee: Armstrong Cork Company
    Inventors: Ronald L. Dieck, Thomas B. Garrett, Alan B. Magnusson