Patents by Inventor Stanley F. Ignasiak

Stanley F. Ignasiak 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).

  • Direct-imaging flexible offset printing plate and method of manufacture
    Patent number: 4204865
    Abstract: A flexible offset printing plate is formed from a directly imaged electrophotographic member comprising an inorganic coating of a photoconductive material on a polyester substrate. The photoconductive material is an oriented crystalline deposit about 3000 Angstroms thick which has been directly sputtered with radiofrequency energy in a process using a Langmuir sheath to produce a light sensitive, readily imaged abrasion-resistant, transparent coating. It is deposited on a sheet of dimensionally stable, transparent polyester film having a thickness of about 0.005 inch with an intervening sandwiched layer of ohmic material such as indium-tin oxide about 300 Angstroms thick. The transparency of the ohmic layer and the photoconductive coating on a transparent substrate result in a transparent plate.The electrophotographic member is imaged by charging, exposure and toning with a suitable toner.
    Type: Grant
    Filed: January 19, 1978
    Date of Patent: May 27, 1980
    Assignee: Coulter Systems Corporation
    Inventors: Manfred R. Kuehnle, Ferdinand Martinez, Stanley F. Ignasiak
  • Penetration phosphors for display devices
    Patent number: 4105909
    Abstract: La.sub.2 O.sub.2 S particles are employed as a carrier host in conjunction with terbium activator ions in a cathodo-luminescent penetration phosphor composition for cathode ray display tubes. A thin layer of La.sub.2 O.sub.2 SO.sub.4 :Tb or La.sub.2 O.sub.2 SO.sub.4 :Tb,Eu is utilized to provide a barrier which must be penetrated by excitation electrons to produce green spectral emission from the particle thereby increasing the voltage-turn-on characteristic of the phosphor. Additionally, methods are disclosed for synthesizing the same in addition to an improved method for synthesizing a penetration phosphor particle comprising a core of La.sub.2 O.sub.2 S:Tb and a barrier layer of La.sub.2 O.sub.2 S:Tb,Eu.
    Type: Grant
    Filed: October 27, 1977
    Date of Patent: August 8, 1978
    Assignee: Sperry Rand Corporation
    Inventor: Stanley F. Ignasiak
  • Penetration phosphors for display devices
    Patent number: 4071640
    Abstract: La.sub.2 O.sub.2 S particles are employed as a carrier host in conjunction with terbium activator ions in a cathodo-luminescent penetration phosphor composition for cathode ray display tubes. A thin layer of La.sub.2 O.sub.2 SO.sub.4 :Tb or La.sub.2 O.sub.2 SO.sub.4 :Tb,Eu is utilized to provide a barrier which must be penetrated by excitation electrons to produce green spectral emission from the particle thereby increasing the voltage-turn-on characteristic of the phosphor. Additionally, methods are disclosed for synthesizing the same in addition to an improved method for synthesizing a penetration phosphor particle comprising a core of La.sub.2 O.sub.2 S:Tb and a barrier layer of La.sub.2 O.sub.2 S:Tb,Eu.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: January 31, 1978
    Assignee: Sperry Rand Corporation
    Inventor: Stanley F. Ignasiak
  • Penetration phosphors and display devices
    Patent number: 3939377
    Abstract: La.sub.2 O.sub.2 S particles are employed as carrier hosts in a cathodo-luminescent penetration phosphor composition for cathode ray display tubes. Tb and Eu ions are used in low concentrations as activators in the control of the red and green optical emission from within a film of the activated host material.
    Type: Grant
    Filed: September 13, 1974
    Date of Patent: February 17, 1976
    Assignee: Sperry Rand Corporation
    Inventor: Stanley F. Ignasiak