Patents by Inventor Albert R. Wacker

Albert R. Wacker 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).

  • Method for ultrasonically welding plasticized thermoplastic polymeric foam wares
    Patent number: 4293355
    Abstract: Disclosed herein is a tethered earplug construction comprising a pair of plasticized thermoplastic foam earplugs tethered together by one or more flexible plasticized thermoplastic cord elements. Attachment of the cord element to the earplug is achieved by ultrasonic welding.
    Type: Grant
    Filed: September 10, 1979
    Date of Patent: October 6, 1981
    Assignee: Cabot Corporation
    Inventor: Albert R. Wacker
  • Paired earplug construction
    Patent number: 4193396
    Abstract: Disclosed herein is a tethered earplug construction comprising a pair of plasticized thermoplastic foam earplugs tethered together by one or more flexible plasticized thermoplastic cord elements. Attachment of the cord element to the earplug is achieved by ultrasonic welding.
    Type: Grant
    Filed: April 28, 1978
    Date of Patent: March 18, 1980
    Assignee: E-A-R Corporation
    Inventor: Albert R. Wacker