Patents by Inventor Stephen L. Fowler

Stephen L. Fowler 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).

  • Apparatus for packaging contaminant-sensitive articles and resulting package
    Patent number: 5724748
    Abstract: A package for storing contaminant-sensitive articles in a contaminant-free environment featuring a pair of polymeric material circular half-sections having a bottom wall and a side wall.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: March 10, 1998
    Inventors: Ray G. Brooks, Timothy W. Brooks, Stephen L. Fowler
  • Semi-rigid heat-sealable laminates with permanent antistatic characteristics
    Patent number: 5064699
    Abstract: A semi-rigid, heat-sealable laminate with permanent antistatic characteristics comprising a semi-rigid packaging material having a coating of heat-sealable antistatic plastic. The antistatic plastic is a film of a modified acid copolymer. The modified acid copolymer is selected from (I) a mixture of (A) a polymer containing carboxylic acid moieties and (B) an antistatically effective amount of a quaternary amine, or (II) the acid/base reaction product of (A) a polymer containing carboxylic acid moieties and (C) an antistatically effective amount of an organic or inorganic base.
    Type: Grant
    Filed: March 6, 1990
    Date of Patent: November 12, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Marvin R. Havens, Stephen L. Fowler, William P. Roberts, Cynthia L. Ebner
  • Process for skin packaging electostatically sensitive items
    Patent number: 5033253
    Abstract: Disclosed is a skin packaging film for skin packaging high profile and/or heavy articles. The film comprises linear ethylene/alpha-olefin copolymer. In one embodiment, the film is antistatic and may be employed for skin packaging of electro-static sensitive items such as circuit boards.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: July 23, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Marvin R. Havens, Stephen L. Fowler, George J. McCrary, Jr., Alfred P. Engelmann
  • Telecommunications device for the hearing impared
    Patent number: 4608457
    Abstract: This apparatus having means responsive to a dual multifrequency telephone output to provide an electrical signal to an automatic gain control so as to provide preconditioning to a signal for amplification so as to provide an amplified signal to a comparator with visual light source responsive thereto to indicate activity at the other end of the phone line and a tone decoder also receiving the amplified signal to a digital binary code corresponding to the dual tone multifrequency signal received.
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: August 26, 1986
    Inventors: Stephen L. Fowler, Allison T. Brown
  • Irradiated film
    Patent number: 4283630
    Abstract: Irradiated film having substantial uniformity in the radiation dosage profile is produced by irradiating the film within a trough having lateral deflection blocks disposed adjacent the film edges for deflecting electrons toward the surface of the trough bottom for further deflecting the electrons toward the film edge.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: August 11, 1981
    Assignee: W. R. Grace & Co.
    Inventor: Stephen L. Fowler
  • Uniformly irradiated polymer film
    Patent number: 4178220
    Abstract: Irradiated film having substantial uniformity in the radiation dosage profile is produced by irradiating the film within a trough having lateral deflection blocks disposed adjacent the film edges for deflecting electrons toward the surface of the trough bottom for further deflecting the electrons toward the film edge.
    Type: Grant
    Filed: April 4, 1977
    Date of Patent: December 11, 1979
    Assignee: W. R. Grace & Co.
    Inventor: Stephen L. Fowler