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:
Mar. 23, 1999
Filed:
Mar. 12, 1997
Applicant:
Inventors:
Shiniti Sugai, Annaka, JP;
Kouzou Yokota, Annaka, JP;
Tadashi Niwayama, Annaka, JP;
Michiaki Oda, Annaka, JP;
Shiniti Kon, Nishihirakawa-gun, JP;
Assignee:
Shin-Etsu Handotai Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ; B08B / ; B08B / ;
U.S. Cl.
CPC ...
134 26 ; 134 19 ; 134 21 ; 134 221 ; 134 254 ; 134 37 ;
Abstract
A method for cleaning and drying crucibles for use in pulling single crystals by the Czochralski method after transportation of the crucibles, includes cleaning a crucible in a cleaning process; warming the crucible with pure water heated at a temperature of at least 50.degree. C.; and drying the warmed crucible under ambient conditions.