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:
Jan. 05, 1993
Filed:
Oct. 15, 1991
Brian Schanning, Marblehead, MA (US);
Sadredin Tavana, Watertown, MA (US);
Steven E Archambault, Haverhill, MA (US);
Carl G Hayssen, III, Andover, MA (US);
Ungermann-Bass, Inc., Santa Clara, CA (US);
Abstract
A security system for local area networks (LAN) to prevent eavesdropping of or to control access to LAN traffic at repeater or concentrator ports. The security system determines which repeater ports are to have security activated according to a given set of criteria. For ports with security activated, the contents of the data field of data frame transmitted from the repeater port to the local device are replaced with an arbitrary bit pattern.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile