The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 2000
Filed:
May. 29, 1998
Applicant:
Inventors:
Akira Yamamoto, Tokyo, JP;
Yoshie Tominaga, Saitama-ken, JP;
Assignee:
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
264 15 ; 264678 ;
Abstract
Production process for spherical ceramic granules which includes pulverizing a dried product of a ceramic material; calcinating the pulverized product at a temperature of about 300 to 900.degree. C.; rotating the calcinated granules to make spherical granules; and firing the spherical granules. The spherical ceramic granules have no corner or sharp edge and projection, and thus show a high fluidity property and excellent operability.