Patents by Inventor Frnacis W. Michelotti

Frnacis W. Michelotti 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).

  • Photoresist stripping composition
    Patent number: 5863346
    Abstract: A non-aqueous negative photoresist stripping composition which consists essentially of about 40 to 80% by weight of an alkylnaphthalene solvent, about 5 to 20% by weight of an alkyl phenol which provides a corrosion inhibitory effect, about 5 to 20% by weight of a linear monoalkylbenzene sulfonic acid which is a surfactant and about 1 to 10% by weight of a dialkylbenzene sulfonic acid. There is further provided a process for removing coatings from a photoresist with the compositions of the invention.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: January 26, 1999
    Assignee: Ashland Inc.
    Inventor: Frnacis W. Michelotti