Patents by Inventor Donald R. Kardon

Donald R. Kardon 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 of making an improved electroluminescent device
    Patent number: 5454892
    Abstract: An electroluminescent device in which water is an essential component. Water is incorporated into the encapsulated phosphor-binder and the dielectric binder to provide a device in which brightness and longevity are enhanced.
    Type: Grant
    Filed: April 1, 1994
    Date of Patent: October 3, 1995
    Assignee: BKL, Inc.
    Inventors: Donald R. Kardon, Charles H. Moore, Douglas S. Bush
  • Electroluminescent device
    Patent number: 5352951
    Abstract: An electroluminescent device in which water is an essential component. Water is incorporated into the encapsulated phosphor-binder and the dielectric binder to provide a device in which brightness and longevity are enhanced.
    Type: Grant
    Filed: June 3, 1991
    Date of Patent: October 4, 1994
    Assignee: BKL, Inc.
    Inventors: Donald R. Kardon, Charles H. Moore, Douglas S. Bush
  • Adhesively bonded electroluminescent system
    Patent number: 4560902
    Abstract: There is described an electroluminescent system in which the components are bonded to one another via an epoxy-based adhesive derived from an epihalohydrin and a bisphenol.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: December 24, 1985
    Inventor: Donald R. Kardon
  • Method of making tamperproof bag closure
    Patent number: 4464158
    Abstract: A tamperproof bag is provided with closure means comprising a strip of microcapsules containing an adhesive core enclosed by a shell adapted to be broken by pressure application to release the adhesive contents. The microcapsules are applied to the bag by means of a binder system or by depositing them onto an adhesive tie-coat previously applied to the bag.
    Type: Grant
    Filed: April 27, 1982
    Date of Patent: August 7, 1984
    Inventor: Donald R. Kardon