Patents by Inventor Haruyuki Fukuzawa

Haruyuki Fukuzawa 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: 6642349
    Abstract: A batch type apparatus for producing a liquid crystalline polymer includes a reactor, a first gas-pressurizing unit, a die-head, a shut-off valve, and a die-plate. The reactor produces a liquid crystalline polymer capable of forming an anisotropic melt phase. The reactor has a discharge port at a lower portion thereof. The first gas-pressurizing unit is attached to the reactor for discharging under pressure the liquid crystalline polymer by use of an inert gas. The die-head includes, at one end portion thereof, a discharge valve which opens and closes the discharge port; at a middle portion thereof, an internal chamber which communicates with the discharge port and is heated and regulated from the peripheral surface thereof; and at the other end portion thereof, an opening which forms an end portion of the internal chamber. The shut-off valve is connected to the other end portion of the die-head and capable of opening and closing the opening. The die-plate is disposed at the opening of the shut-off valve.
    Type: Grant
    Filed: September 12, 2000
    Date of Patent: November 4, 2003
    Assignee: Polyplastics Co., Ltd.
    Inventors: Haruyuki Fukuzawa, Toshio Shiwaku