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:
Oct. 06, 2009
Filed:
Aug. 27, 2002
Applicants:
Thomas Andrew Hengeveld, Hollis, NH (US);
Dennis Michael Martinez, Westford, MA (US);
Inventors:
Thomas Andrew Hengeveld, Hollis, NH (US);
Dennis Michael Martinez, Westford, MA (US);
Assignee:
Pine Valley Investments, Inc., Las Vegas, NV (US);
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for distributing encryption keys for use in communication systems such as trunked radio communication systems. Group traffic keys are encrypted at a key administrator and passed to a distribution facility for storage and distribution. The distribution facility passes the encrypted group traffic key to communication devices where the group traffic keys are decrypted and used to encrypt/decrypt traffic.