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. 26, 1993
Filed:
Mar. 01, 1991
Applicant:
Inventor:
Robert L Finicle, Bay Village, OH (US);
Assignee:
Praxair S.T. Technology, Inc., Danbury, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
428 346 ; 428141 ; 428213 ; 428215 ; 428698 ; 428704 ; 428174 ; 423290 ; 432265 ;
Abstract
A pyrolytic boron nitride boat having a cavity suitable for use in growing and doping semi-conductor crystals such as gallium arsenide and said cavity having a roughened surface formed of substantially uniform projected no nodules, disturbances, or ridges.