Patents Assigned to Ashland Oil Company
  • Patent number: 5496491
    Abstract: Organic stripping composition for photoresists comprising organic polar solvents and basic amines which includes an inhibitor which forms a coordination complex with a metal.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: March 5, 1996
    Assignee: Ashland Oil Company
    Inventors: Irl E. Ward, Francis W. Michelotti
  • Patent number: 5453149
    Abstract: An improved electromagnetic bonding process wherein the plastic parts or components to be bonded are configured to be positioned with respect to each other at the point of bonding under a frictional or interference fitting relationship embraced by the interpositioning of thermoplastic electromagnetic bonding material at the bonding point whereupon an electromagnetic field is generated to melt thermoplastic electromagnetic bonding material thereby fusing the plastic parts or components. In a particularly preferred embodiment a plastic container is formed having hemispherically-shaped top and bottom closures bonded to a cylindrically-shaped body member.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: September 26, 1995
    Assignee: Ashland Oil Company
    Inventor: Robert J. Szczesniak