Patents Assigned to Younger Mfg.
  • Polyurea/urethane optical material and method for making it
    Patent number: 6939939
    Abstract: A polyurea/urethane material and method for making it provides for improved optical parts. The material allows for ease of manufacture of parts having good optical properties, high hardness, low density, and good impact resistance. The method provides for related manufacturing advantages.
    Type: Grant
    Filed: February 24, 2003
    Date of Patent: September 6, 2005
    Assignee: Younger Mfg.
    Inventors: Edwin C. Slagel, Michael J. Slagel