Patents by Inventor Ray L. Hartless

Ray L. Hartless 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).

  • Photosensitive element containing a polymer of an indenone based compound and a methacrylate compound
    Patent number: 4409318
    Abstract: The use of polymers including an indanone entity for use as a resist in a photosensitive body used in a lithographic process leads to desirable results. These resists have excellent resolution essentially equivalent to that obtainable with poly(methyl methacrylate). Additionally, the sensitivities of these polymers to the actinic radiation typically used in photolithographic processes, e.g., radiation from a mercury lamp, is significantly better than that obtained with poly(methyl methacrylate).
    Type: Grant
    Filed: August 19, 1982
    Date of Patent: October 11, 1983
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Edwin A. Chandross, Ray L. Hartless
  • Process of imaging using an indanone containing material
    Patent number: 4363867
    Abstract: The use of polymers including an indanone entity for use as a resist in a photosensitive body used in a lithographic process leads to desirable results. These resists have excellent resolution essentially equivalent to that obtainable with poly(methyl methacrylate). Additionally, the sensitivities of these polymers to the actinic radiation typically used in photolithographic processes, e.g., radiation from a mercury lamp, is significantly better than that obtained with poly(methyl methacrylate).
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: December 14, 1982
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Edwin A. Chandross, Ray L. Hartless
  • Stabilized polymeric composition and product using same
    Patent number: 4073771
    Abstract: The condensation products of oxalyl dihydrazide and 3,5-di-tertiary-butyl-4-hydroxy aryl carbonyl compounds are found to stabilize polyethylene against oxidative degradation. Stabilizer effectiveness is retained with the polymer in contact with copper. Stabilized polymers are effectively utilized as wire insulation.
    Type: Grant
    Filed: July 29, 1976
    Date of Patent: February 14, 1978
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventors: Ray L. Hartless, Anthony M. Trozzolo