Patents by Inventor Kenneth Norland

Kenneth Norland 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).

  • Substituted xanthene compounds
    Patent number: 5422382
    Abstract: Substituted xanthene compounds are described which are capable of functioning as absorbers in high intensity light protective compositions and in materials used to prevent the transmission of high intensity light at selected wavelengths. Also described are high intensity light protective compositions containing an effective amount of a substituted xanthene compound and a polymeric compound and a material which prevents transmission of high intensity light at wavelengths between about 482 to about 556 nanometers. The material of this invention can be used to make protective eyewear, optical filters, shields for protecting a persons body from high intensity light, or shields for protecting components of an optical instrument from high intensity light.
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: June 6, 1995
    Assignee: Steadfast, Incorporated
    Inventors: Louis Locatell, Kenneth Norland, F. Donald Roberts, Charles Zepp
  • Substituted xanthene compounds
    Patent number: 5149830
    Abstract: Substituted xanthene compounds are described which are capable of functioning as absorbers in high intensity light protective compositions and in materials used to prevent the transmission of high intensity light at selected wavelengths. Also described are high intensity light protective compositions containing an effective amount of a substituted xanthene compound and a polymeric compound and a material which prevents transmission of high intensity light at wavelengths between about 482 to about 556 nanometers. The material of this invention can be used to make protective eyewear, optical filters, shields for protecting a persons body from high intensity light, or shields for protecting components of an optical instrument from high intensity light.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: September 22, 1992
    Assignee: Steadfast, Inc.
    Inventors: Louis Locatell, Kenneth Norland, F. Donald Roberts, Charles Zepp
  • Electrochemical cell with a cadmium patch electrode
    Patent number: 4185144
    Abstract: A cadmium patch laminar electrode, comprising a dispersion of particulate cadmium in a binder matrix on a conductive plastic substrate is prepared by contacting a zinc patch electrode comprising a dispersion of particulate zinc in a binder matrix on a conductive plastic substrate with an aqueous solution of a cadmium salt. The cadmium patch electrode can be used in a primary electrochemical cell such as that employing a manganese dioxide cathode and a cadmium chloride electrolyte.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: January 22, 1980
    Assignee: Polaroid Corporation
    Inventors: Allan E. Ames, Stanley M. Bloom, Arnold Hoffman, Kenneth Norland