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. 07, 1977
Filed:
May. 16, 1975
Applicant:
Inventors:
Marc Marian Faktor, Bushey Heath, EN;
Thomas Ambridge, Harrow Weald, EN;
Ean Grant Bremner, Stanmore, EN;
Assignee:
The Post Office, London, EN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; B23P / ;
U.S. Cl.
CPC ...
2041 / ; 204 / ; 2041292 ; 2041293 ;
Abstract
The electrochemical measuring technique of the present invention employs, as the barrier material, a concentrated electrolyte, which also forms a medium for the controlled dissolution of a surface of the semiconductor so as to provide a continuous depth profile. The depth profile characteristic may be determined by capacitance-voltage measurements on n-type bulk GaAs, using KOH as the electrolyte.