Patents by Inventor Wilhelmus H. J. Harmsen

Wilhelmus H. J. Harmsen 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).

  • Single-strip molding apparatus
    Patent number: 5297897
    Abstract: An apparatus for molding electronic components. The single-strip molding apparatus has a mold die formed from two mold halves which are movable relative to each other and can be closed upon one another. A leadframe for the component to be molded is placed into a recess in one of the mold halves. Molding material is heated and forced under pressure into the recess containing the leadframe. After the component is molded the mold is opened and the upper half of the mold is cleaned by a combined cleaning-discharge unit. Upon the return stroke of the cleaning-discharge unit, the molded component is removed and the lower half of the mold is cleaned.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: March 29, 1994
    Assignee: ASM Fico Tooling B.V.
    Inventors: Johannes L. G. M. Venrooij, Wouter B. Verwoerd, Wilhelmus H. J. Harmsen