Patents by Inventor Maarten Molenaar

Maarten Molenaar 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).

  • Patent number: 4446086
    Abstract: A process and apparatus for producing a dust-free blend of additives for use in plastic manufacture wherein the materials are extruded through apertures in a thin die plate supported by a strong die plate support, the apertures in the die plate being larger at their inlet ends than at their outlet ends, and apertures in the die plate support being larger than the die plate apertures, and the product being strand-like pellets of the additive materials.
    Type: Grant
    Filed: August 6, 1982
    Date of Patent: May 1, 1984
    Assignee: EnviroStrand, Inc.
    Inventors: Maarten Molenaar, Hermann A. Schreuder