Patents Represented by Attorney William T. McLain

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  • Monomers for poly(methylenebenzoate) polymers from toluic acid compounds
    Patent number: 4182847
    Abstract: Highly-purified monomers for poly(p-methylenebenzoate) polymers and poly(m-methylenebenzoate) polymers are prepared by purifying acetoxylated hydroxymethylbenzoic acid compounds derived by side-chain acetoxylation of toluic acid compounds. The purification process can be by recrystallation or by fractional distillation.
    Type: Grant
    Filed: June 16, 1978
    Date of Patent: January 8, 1980
    Assignee: Standard Oil Company (Indiana)
    Inventors: Ellis K. Fields, Steven A. Cerefice, Edward E. Paschke
  • Method for forming and keeping molten the recessed area of a fabricated plastic product
    Patent number: 4021519
    Abstract: In a blow-molding operation, a method of forming a recessed area in the exterior wall of the parison and maintaining the recessed area in a heated condition while the remainder of the parison is formed and cooled. Also an apparatus (ram means) employed in such a method comprising (a) an arm, (b) a head and (c) a tip. The method and apparatus find application where a gripping-action is desired or required between the fabricated product and another sub-assembly.
    Type: Grant
    Filed: February 14, 1972
    Date of Patent: May 3, 1977
    Assignee: Standard Oil Company (Indiana)
    Inventors: David F. Krueger, Edmond S. Kaliszewski