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. 12, 1996
Filed:
Aug. 08, 1994
Applicant:
Inventor:
Sergio Palara, Acitrezza, IT;
Assignee:
Co.Ri.M.Me., Catania, IT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
257536 ; 257488 ; 257489 ; 257577 ;
Abstract
A spiral resistor being of a type formed on a semiconductor substrate to withstand high voltages, comprises at least one thin field-plate layer covering said substrate between adjacent turns of the resistor. This prevents the well-known phenomenon of the 'phantom gate' from occurring which would result in the characteristics of spiral resistors deteriorating over time.