Patents by Inventor Stephen E. Burkle

Stephen E. Burkle 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).

  • Preparation and use of novel injectable RES avoiding inorganic particles for medical application
    Patent number: 5547682
    Abstract: Novel N-RES agents for use in vitro and in vivo medical and biological applications, such as, for example MRI and/or intravenous administration of pharmaceutical agents are described. The novel N-RES agents are prepared by coating inorganic core particles with a poly(acrylic acid)--poly(alkylene ether) graft copolymer. The resulting polymer-coated inorganic particle cores are useful as imaging agents, therapeutic agents or carriers having increased circulation time due to decrease uptake or recognition by the RES.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: August 20, 1996
    Assignee: BioQuest, Incorporated
    Inventors: Mark S. Chagnon, Stephen E. Burkle, Michelle J. Carter, Tracy J. Hamilton, John Havelick, Jr., Deborah A. Kaplan, Kristin L. Marzloff
  • Storage stable photosensitive diazo lithographic printing plates
    Patent number: 4299907
    Abstract: Storage stable lithographic printing plates employing novel light sensitive, high molecular weight diazo polymers are herein provided. The novel diazo polymers of the instant invention have the generic formula: ##STR1## Where R is methyl or hydrogenX is methoxy, ethoxy or hydrogenY is oxygen or sulfurZ is an anion of a sulfonic, carboxylic or phosphonic acidn is an integer from 8 to 970.
    Type: Grant
    Filed: November 15, 1979
    Date of Patent: November 10, 1981
    Assignee: Polychrome Corporation
    Inventors: Stephen E. Burkle, Albert S. Deutsch, Robert S. Piller
  • Color proofing guide
    Patent number: 4132553
    Abstract: Light sensitive, high molecular weight diazo polymers useful for the manufacture of color proofing guides are herein provided. The novel diazo polymers of the instant invention have the generic formula: ##STR1## Where R is methyl or hydrogen X is methoxy, ethoxy or hydrogenY is oxygen or sulfurZ is an anion of a sulfonic, carboxylic or phosphonic acidN is an integer from 8 to 970.
    Type: Grant
    Filed: March 24, 1977
    Date of Patent: January 2, 1979
    Assignee: Polychrome Corporation
    Inventors: Stephen E. Burkle, Albert S. Deutsch