Patents by Inventor Peter James Wilkinson

Peter James Wilkinson 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).

  • STABLE PHOTORESIST COMPOSITIONS COMPRISING ORGANOSULPHUR COMPOUNDS
    Publication number: 20200026187
    Abstract: The present invention provides a photoresist composition Part A, comprising a carboxylic functional ethylenically unsaturated resin having an acid value equal to or greater than 10 mg KOH/g, and an organosulphur compound. The photoresist composition may further comprise a Part B, comprising a resin that may react with the carboxylic groups of Part A. The photoresist compositions are shelf-stable, alkali developable, and provide cured resists with improved surface- and through-cure, improved gloss, and reduced undercut and overcut.
    Type: Application
    Filed: April 10, 2018
    Publication date: January 23, 2020
    Applicant: SUN CHEMICAL CORPORATION
    Inventors: Peter James Wilkinson, Edward Keith Mateer, Stephen Hall, Derek Ronald Illsley