Patents by Inventor John Magvas

John Magvas 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).

  • Method of developing positive photoresist and compositions therefor
    Patent number: 5821036
    Abstract: A method and composition for developing positive photoresists is illustrated. The developer of the present invention includes an ammonium hydroxide aqueous base and a surfactant of the fluorinated alkyl alkoxylate class most preferably present in an amount of from 10 to 30 ppm. A particularly preferred surfactant includes sulfonyl and amine moieties.
    Type: Grant
    Filed: October 27, 1997
    Date of Patent: October 13, 1998
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Stanley A. Ficner, John Magvas, Christopher F. Lyons, Wayne M. Moreau, Marina V. Plat