Patents by Inventor Theodore P. Christini

Theodore P. Christini 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).

  • Adhesion between phosphor and topcoat layers of an X-ray intensifying screen
    Patent number: 5017440
    Abstract: An improved X-ray intensifying screen element containing a topcoat layer comprising an acrylonitrile-styrene copolymer optionally mixed with a carboxylated acrylic polymer and an active, phosphor layer having an adhesion promoting amount of a soluble, inorganic salt as described. The improved element exhibits strong adhesion between the topcoat and active layers and is eminently suitable for the rough handling encountered when these elements are used in autochangers and the like.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: May 21, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William D. Bills, Theodore P. Christini, Reid E. Kellogg, Richard B. Maynard, William J. Zegarski
  • X-ray intensifying screen with improved topcoat
    Patent number: 4711827
    Abstract: Performance characteristics for an X-ray intensifying screen are improved by use of an acrylonitrile/styrene copolymer composition as the protective topcoat. The resulting intensifying screen is well suited for use in automatic X-ray changer systems.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: December 8, 1987
    Assignee: E. I. Du Pont De Nemours and Company
    Inventor: Theodore P. Christini
  • Static resistant X-ray intensifying screens
    Patent number: 4666774
    Abstract: X-ray intensifying screen comprising, in order, support; fluorescent phosphor containing active layer; and protective topcoat which is a flexible film of a fluorine containing polymer, the topcoat being energy treated under oxidative condition, e.g., corona discharge, etc., and having an antistatic agent applied thereto, e.g., from a solution containing at least 0.1% by weight of an anionic, cationic, nonionic or amphoteric antistatic agent. The X-ray intensifying screens have improved resistance to static.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: May 19, 1987
    Inventor: Theodore P. Christini
  • Method and apparatus for concomitant particulate deposition in electroless plating, and the product thereof
    Patent number: 3940512
    Abstract: A method for concomitant particulate deposition in electroless plating wherein objects to be plated are subjected to tumbling during the plating process.
    Type: Grant
    Filed: May 13, 1974
    Date of Patent: February 24, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Theodore P. Christini, William P. Flynn, John B. Inskeep, Harry J. McCauley
  • Method for concomitant particulate diamond deposition in electroless plating, and the product thereof
    Patent number: RE33767
    Abstract: This invention is a method for depositing on an article a coating containing at least one member of the group metals and metal alloys plus particulate dispersed diamond comprising contacting the surface of the article with a stable electroless plating bath consisting essentially of an aqueous solution of soluble constituents of the group, electroless reducing agent therefor, a suspension of diamond particles therein and a stabilizer, and maintaining the diamond particles in suspension throughout the bath during the coating of the article for a time sufficient to produce a preselected depth of coating on the article, and the coated article pe se.This is a reissue of a patent which was the subject of a reexamination certificate No. B1 Re. 29,285, dated July 5, 1983, Request No. 90/000,120, Dec. 3, 1981.
    Type: Grant
    Filed: August 15, 1989
    Date of Patent: December 10, 1991
    Assignee: Surface Technology, Inc.
    Inventors: Theodore P. Christini, Albert L. Eustice, Arthur H. Graham