Patents by Inventor Lam B. Sam

Lam B. Sam 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).

  • Molding process for forming complex shapes
    Patent number: 6328920
    Abstract: A plastic part having a complex structure as a first layer and a simple structure as a second layer, is formed using a method for molding. Initially, a single mold is provided, the mold having an interior cavity and a runner reaching from an exterior of the mold to the cavity. The mold is kept closed while a quantity of a first plastic material is injected via the runner into the interior cavity to form a first layer of the plastic part. The mold is then partially opened, creating an increased interior cavity section, into which a quantity of a second plastic material is injected, via the runner, to form a second layer of the plastic part. The solidified plastic part can then be ejected from the mold.
    Type: Grant
    Filed: July 17, 1998
    Date of Patent: December 11, 2001
    Assignee: Honda Engineering North America, Inc.
    Inventors: Yuichi Uchiyama, Lam B. Sam