Patents by Inventor Douglas Mark Haseltine

Douglas Mark Haseltine 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).

  • Apparatus and process for distributing molten thermoplastic polymers from melt polymerization to molding machines
    Patent number: 5928596
    Abstract: A process and apparatus for distributing molten thermoplastic material supplied directly from melt polymerization to a plurality of molding machines operating in timed sequence is disclosed. The invention is particularly applicable to transferring molten polyester (normally polyethylene terephthalate or a copolymer thereof) directly from a melt polymerization reactor to injection molding machines for producing molded plastic articles.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: July 27, 1999
    Assignee: Eastman Chemical Company
    Inventors: Andrew Ervin McLeod, Douglas Mark Haseltine, Larry Cates Windes, Marc Alan Strand