Patents Represented by Attorney David E. Frankhouse

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  • Apparatus for the cold deep drawing of films
    Patent number: 5230910
    Abstract: An apparatus for forming depressions in thermoplastic film. The apparatus uses rotating dies to first frictionally heat and soften the film, and to then urge the film into bores in a mold, thereby forming the depressions. The plastic films thus produced are useful in the production of packaging.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: July 27, 1993
    Inventor: Henrich Eggert
  • Transdermal administration of 2-amino-6-n-propylamino-4,5,6,7-tetrahydrobenzothiazole
    Patent number: 5112842
    Abstract: The invention relates to the transdermal administration of 2-amino-6-n-propylamino-4,5,6,7-tetrahydrobenzothiazole or the (-)-enantiomer thereof and transdermal systems containing these active substances.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: May 12, 1992
    Assignee: Boehringer Ingelheim KG
    Inventors: Bernd Zierenberg, Michael Herschel, Uwe Rohr