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. 23, 1987
Filed:
Jul. 31, 1984
Applicant:
Inventors:
John H Tregilgas, Richardson, TX (US);
Bruce E Gnade, Dallas, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
C25F / ;
U.S. Cl.
CPC ...
2041415 ; 204130 ; 2041801 ; 134-1 ;
Abstract
The removal of residual impurities from semiconductor material is accomplished by solid state electromigration of the impurities from the semiconductor slice into a surrounding conductive liquid (e.g. Hg) which is maintained at a negative potential.
Tregilgas, John. (1987). Semiconductor purification by solid state electromigration (U.S. Patent No. 4675087). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4675087
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile