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. 11, 2005
Filed:
Apr. 28, 2003
Applicants:
Shu-wen Chang, Nantou, TW;
Gwo-sen Lin, Taichung, TW;
Chi-min Chen, Taichung, TW;
Inventors:
Assignee:
Wintek Corporation, Taichung, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 900 ;
U.S. Cl.
CPC ...
Abstract
A method for purification through sublimation includes a step of compressing a powdered object to be purified in a tight and compact manner such as granules or cakes under a preset pressure, temperature and time for containing a greater amount of substances in a unit volume so that the object to be purified has an improved heat transfer efficiency and heating power is more stable. During sublimation process a flowing inertia gas is channeled to carry the sublimated and purified substances so that the purified substance flow in the same direction for depositing.