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:
Feb. 10, 1976
Filed:
Jun. 26, 1974
Applicant:
Inventors:
Kenneth E Bean, Richardson, TX (US);
William W Lloyd, Richardson, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
29580 ; 148175 ; 357 49 ; 29577 ;
Abstract
Disclosed are improved field-effect and bipolar semiconductor devices and the method of making them, wherein maximum junction control provides highly predictable device parameters. Low temperature epitaxial depositions provide tight junction thickness and resistivity control, and an orientation dependent etch forms grooves circumscribing portions of the host substrate and overlying epitaxial layers to provide dielectrically isolated single crystalline mesas utilized in forming electronic devices.