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:
May. 31, 2022
Filed:
Dec. 17, 2019
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B 33/035 (2006.01);
U.S. Cl.
CPC ...
C01B 33/035 (2013.01);
Abstract
In a step of performing cylindrical grinding of a polycrystalline silicon bargrown by a Siemens method, this cylindrical grinding step is performed such that a polycrystalline silicon rod, whose center axis Cis shifted from a center axis Cof a silicon core wireby 2 mm or more, is manufactured.