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:
Aug. 02, 1988
Filed:
Mar. 18, 1987
Applicant:
Inventor:
Sheldon Howard, Hacienda Heights, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
329 95 ; 379112 ; 379 97 ;
Abstract
The present invention comprises a novel means of controlling access to long distance telephone services or other information processing systems through the use of time dependent user ID numbers. The ID number of the present invention contains a fixed portion, and a changing portion that changes over time in a predetermined manner. Unless the fixed and changing portions of an incoming ID number received from a user attempting to gain access to the secured system are both correct, access is denied. The invention also includes a multi-use detector that determines if a valid ID number is used simultaneously by two different users.