Patents Assigned to ACT, Incorporated
  • Polyvinyl butyral pellicle compositions
    Patent number: 5244952
    Abstract: An improved pellicle for use in projection printing comprises a pellicle in which the transparent film is formed from a specific polyvinyl butyral resin from a casting composition which is a mixture of the specific polyvinyl butyral resin and dimethylformamide.
    Type: Grant
    Filed: May 1, 1991
    Date of Patent: September 14, 1993
    Assignee: ACT, Incorporated
    Inventor: Irl E. Ward