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. 17, 1992
Filed:
Aug. 24, 1989
Applicant:
Inventors:
Assignees:
Licentia Patent-Verwaltungs-GmbH, Frankfurt, DE;
Telefunken electonic GmbH, Heilbronn, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
437 33 ; 437 89 ; 437 99 ; 437188 ; 437196 ; 357 34 ;
Abstract
The invention relates to a method in particular for manufacturing bipolar transistors. By applying selective epitaxy methods and by using self-adjusting techniques, the process sequence is shortened and the transistor properties are improved.