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:
Jun. 03, 2003
Filed:
Jun. 12, 2001
Applicant:
Inventor:
Feng-Yi Huang, Hacienda Hts., CA (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 3/1072 ;
U.S. Cl.
CPC ...
H01L 3/1072 ;
Abstract
A silicon-germanium base capable of use in heterojunction bipolar transistor includes a silicon substrate having a mesa surrounded by a trench. The mesa has a top surface and a silicon-germanium layer is disposed only on the top surface of the mesa. In addition, a heterojunction bipolar transistor includes the silicon-germanium base as described.
Huang, Feng-Yi. (2003). Heterojunction bipolar transistor with silicon-germanium base (U.S. Patent No. 6573539). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6573539
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile