Patents by Inventor Sansan Souma

Sansan Souma 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).

  • Reinforced filter element
    Patent number: 5558689
    Abstract: A filter element, including a pair of filter plates that are each made of a nonwoven fabric or felt of a polymeric material shaped into a plate having a corrugated cross section and which are positioned in such a way that the grooves in one filter plate are opposed to those in the other filter plate, is reinforced with reinforcements that are placed across the width of the filter element. The reinforcements and the filter element are secured at their respective ends by means of bolts. The reinforcements are similar in cross-sectional shape so that they can circumscribe the corrugated cross section of the filter plates such that a pair of the reinforcements can hold the filter element therebetween.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: September 24, 1996
    Assignee: Nittetsu Mining Co., Ltd.
    Inventors: Hiroyuki Yanagihara, Seihou Taniguchi, Takeshi Hazeyama, Hitoshi Otaka, Teiji Hashimoto, Sansan Souma