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. 02, 1982
Filed:
Jan. 24, 1979
Applicant:
Inventor:
Richard T Simko, Los Altos, CA (US);
Assignee:
Xicor, Inc., Los Altos, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
357 23 ; 357 41 ; 357 54 ; 357 59 ; 365185 ;
Abstract
A compact, floating gate, nonvolatile, electrically-alterable memory device fabricated with four layers of polysilicon is described. A particular form of the device utilizes asperities to promote tunnel current flow through relatively thick oxides by means of relatively low average applied voltages. The use of four electrode layers leads to an extremely dense cell and memory array configuration.