Patents by Inventor Shiunkichi Ueda

Shiunkichi Ueda 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).

  • Production and use of crystalline hydrogen-phosphate compounds having layer structure
    Patent number: 5085845
    Abstract: A process for preparing a crystalline layered hydrogenphosphate in a shortened period of time in high efficiency, which comprises reacting a tetravalent metal compound with phosphoric acid or its salt at an elevated temperature with introducing steam into the reaction system. Crystalline layered cerium(IV) bis(hydrogen-phosphate), particularly cerium(IV) bis(hydrogen-phosphate) dihydrate prepared by the above process, has an excellent ability of selectively adsorbing cesium ion, and is useful as a cesium ion adsorbent.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: February 4, 1992
    Assignee: Tayca Corporation
    Inventors: Shiunkichi Ueda, Tomoe Suita, Masahiko Murakami, Mitsutomo Tsuhako