Patents by Inventor Joseph Pavlisko

Joseph Pavlisko 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).

  • Multiactive electrophotographic element
    Patent number: 4840860
    Abstract: An improved reusable multiactive electrophotographic element has a charge-transport layer comprising a triarylamin charge-transport material in a mixture of binders comprising poly[2,2-bis(4-hydroxyphenyl)propane carbonate] and a polyester of 4,4'-(2-norbornylidene)diphenol and terephthalic and azelaic acids, with the weight ratio of the polycarbonate to the polyester being in the range of 9:1 to 3:7.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: June 20, 1989
    Assignee: Eastman Kodak Company
    Inventors: William J. Staudenmayer, David S. Weiss, Joseph A. Pavlisko
  • Multiactive electrophotographic element
    Patent number: 4840861
    Abstract: An improved reusable multiactive electrophotographic element has a charge-transport layer comprising a triarylamine charge-transport material in a mixture of binders comprising poly[2,2-bis(4-hydroxyphenyl)propane carbonate] and a polyester of 2,2-bis(4-hydroxyphenyl)propane and terephthalic and isophthalic acids, with the weight ratio of the polycarbonate to the polyester being in the range of 9:1 to 3:7.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: June 20, 1989
    Assignee: Eastman Kodak Company
    Inventors: William J. Staudenmayer, David S. Weiss, Joseph A. Pavlisko
  • Toner fusing roll covered with crosslinked elastomeric siloxane copolymer containing diphenylsiloxane recurring units and method of preparation
    Patent number: 4807341
    Abstract: Toner fusing rolls with improved properties comprise cylindrical cores covered with crosslinked poly(diorganosiloxanes) having 5-15 mole percent diphenylsiloxane recurring units. The rolls are produced by molding and curing the uncrosslinked polysiloxanes on cylindrical cores.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: February 28, 1989
    Assignee: Eastman Kodak Company
    Inventors: Paul L. Nielsen, Joseph A. Pavlisko
  • Electrophotographic element
    Patent number: 4772526
    Abstract: A reusable electrophotographic imaging element having a photoconductive surface layer in which the binder resin comprises a block copolyester or copolycarbonate having a fluorinated polyether block. The layer has low surface adhesion and affords improved transfer of toner images to receiver sheets.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: September 20, 1988
    Assignee: Eastman Kodak Company
    Inventors: Hsin-Chia Kan, Joseph A. Pavlisko
  • Dry toner and developer composition
    Patent number: 4758491
    Abstract: The image transfer properties and other properties of a fusible dry toner composition are improved by blending the binder resin of the toner with a multiphase polyorganosiloxane block or graft condensation copolymer which provides polyorganosiloxane domains of particular size and concentration at the toner particle surfaces.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: July 19, 1988
    Assignee: Eastman Kodak Company
    Inventors: Peter S. Alexandrovich, Paul A. Hartley, Joseph A. Pavlisko