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. 17, 1995
Filed:
Jun. 15, 1992
Applicant:
Inventors:
Chun-Sho Lee, Taichung, TW;
Ai-kang Li, Hsinchu, TW;
Assignee:
Industrial Technology Research Institute, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
264 44 ; 264 63 ; 264 65 ; 264 66 ; 264 82 ;
Abstract
A process for manufacturing a porous Si.sub.3 N.sub.4 ceramic filter, wherein silicon powder, the raw material, methyl cellulose, the binding agent, and water, the solvent, are well-mixed together to obtain a slurry. A sponge is then dipped into the slurry to adsorb the slurry. After drying the sponge in an oven, it is biscuit fired at 350.degree. C. for 2 hours, and then sintered at 1200-1400.degree. C. for 15 hours.