Patents by Inventor Susan B. Poulin

Susan B. Poulin 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).

  • Development of positive photoresists using cyclic quaternary ammonium hydroxides
    Patent number: 4606999
    Abstract: A method of developing a positive photoresist layer which has been image-wise-exposed comprising contacting the layer with an alkaline developing composition to remove exposed areas of the layer, the developing composition comprising a solution containing a cyclic quaternary ammonium hydroxide developing agent in a sufficient concentration to remove exposed areas of the layer. The present invention also includes a developing composition for use in the method.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: August 19, 1986
    Assignee: Thiokol Corporation
    Inventors: Susan B. Poulin, Ann B. Salamone
  • Developer composition for positive photoresists using solution with cyclic quaternary ammonium hydroxides
    Patent number: 4556629
    Abstract: A method of developing a positive photoresist layer which has been image-wise-exposed comprising contacting the layer with an alkaline developing composition to remove exposed areas of the layer, the developing composition comprising a solution containing a cyclic quaternary ammonium hydroxide developing agent in a sufficient concentration to remove exposed areas of the layer. The present invention also includes a developing composition for use in the method.
    Type: Grant
    Filed: December 21, 1983
    Date of Patent: December 3, 1985
    Assignee: Morton Thiokol, Inc.
    Inventors: Susan B. Poulin, Ann B. Salamone
  • One-part activator and blowing agent for foaming plastics
    Patent number: 4520137
    Abstract: A one-part activator and blowing agent system for foaming plastics comprising an alkali metal borohydride and a salt hydrate blended in a single pellet or as separate pellets with a dry inert resinous polymer carrier. The one-part system is blended with a resinous polymer and then the blend extruded at a temperature at which the blend becomes molten such that the salt hydrate releases its water of hydration to hydrolyze the borohydride and produce a cellular article.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: May 28, 1985
    Assignee: Morton Thiokol Inc.
    Inventors: Roger G. Hamel, Susan B. Poulin
  • One part activator and blowing agent for foaming plastics
    Patent number: 4491554
    Abstract: A one-part activator and blowing agent system for foaming plastics comprising an alkali metal borohydride and a salt hydrate blended in a single pellet or as separate pellets with a dry inert resinous polymer carrier. The one-part system is blended with a resinous polymer and then the blend extruded at a temperature at which the blend becomes molten such that the salt hydrate releases its water of hydration to hydrolyze the borohydride and produce a cellular article.
    Type: Grant
    Filed: September 27, 1983
    Date of Patent: January 1, 1985
    Assignee: Thiokol Corporation
    Inventors: Roger G. Hamel, Susan B. Poulin