Patents by Inventor Mitsuaki Asami

Mitsuaki Asami 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).

  • Process for producing and product of a machinable crystallized glass having needle-like crystals precipitated therein
    Patent number: 4794094
    Abstract: A process for producing a machinable crystallized glass having needle-like crystals precipitated therein, which comprises melting a mixture comprising from 40 to 60 mol % of SiO.sub.2, from 6 to 16 mol % of Al.sub.2 O.sub.3, from 6 to 16 mol % of Y.sub.2 O.sub.3 and from 15 to 30 mol % of CaO, and allowing the melt to cool to have fine needle-like crystals of Ca.sub.4 Y.sub.6 O(SiO.sub.4).sub.6 precipitated.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: December 27, 1988
    Assignee: National Institute for Research in Inorganic Materials
    Inventors: Akio Makishima, Mitsuaki Asami