Patents by Inventor Roland J. Kern

Roland J. Kern 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).

  • Photoimaging process which uses sulfide containing polymeric films
    Patent number: 4271262
    Abstract: The present invention relates to a photoimaging process whereby a polymeric film containing sulfide functionality is selectively exposed to incident radiation in the presence of oxygen and a photosensitizer so that the sulfur functionality is photooxidized to produce a latent image which may then be developed. Polymeric films containing photooxidizable organic sulfide functionality and preferably additional carbon-carbon double bond unsaturation, which are capable of being used in the foregoing process are also included within the scope of the present invention.
    Type: Grant
    Filed: August 15, 1980
    Date of Patent: June 2, 1981
    Assignee: Monsanto Company
    Inventor: Roland J. Kern
  • Photoimageable material of polymeric material having organic sulfide and photo-oxidation sensitizer
    Patent number: 4266004
    Abstract: The present invention relates to a photoimaging process whereby a polymeric film containing sulfide functionality is selectively exposed to incident radiation in the presence of oxygen and a photosensitizer so that the sulfur functionality is photooxidized to produce a latent image which may then be developed. Polymeric films containing photooxidizable organic sulfide functionality and preferably additional carbon-carbon double bond unsaturation, which are capable of being used in the foregoing process are also included within the scope of the present invention.
    Type: Grant
    Filed: July 26, 1978
    Date of Patent: May 5, 1981
    Assignee: Monsanto Company
    Inventor: Roland J. Kern