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:
Jul. 16, 1985
Filed:
May. 31, 1984
Applicant:
Inventor:
Alan C Folmsbee, Santa Clara, CA (US);
Assignee:
Intel Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365 53 ; 357 84 ;
Abstract
A shield for an EPROM cell. Generally MOS electrically programmable read-only memories (EPROMs), can be erased by exposure to radiation. Typically, the EPROM is encapsulated in a package which has a transparent lid to allow radiation to pass through the package to erase the EPROM cells. The invented shield protects selected EPROM cells from the radiation and thus prevent these cells from being erased even though the entire EPROM package is subjected to radiation and other EPROM cells are erased. The shielded EPROM cells are useful for discretionary connections such as those needed in redundant memories.