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. 31, 2009
Filed:
May. 18, 2005
Frank Romano, Westborough, MA (US);
Sampath Krishna, Winchester, MA (US);
Son Nguyen, Marlborough, MA (US);
Jesse Rhodes, Franklin, MA (US);
Philip Grahame Crewe, Linton, GB;
Daniel Jonathan Finchley Cletheroe, Great Shelford, GB;
Mark Marsden, Saffron Walden, GB;
Steven Walter Greendale, Cambridge, GB;
Nigel James Watson, Whittlesford, GB;
Ian Christopher Stroud, Newport, GB;
Timothy David Howe, Great Shelford, GB;
Gerard Edward Smith, Great Dunmow, GB;
Colin Richard Smithers, Bishop's Stortford, GB;
Frank Romano, Westborough, MA (US);
Sampath Krishna, Winchester, MA (US);
Son Nguyen, Marlborough, MA (US);
Jesse Rhodes, Franklin, MA (US);
Philip Grahame Crewe, Linton, GB;
Daniel Jonathan Finchley Cletheroe, Great Shelford, GB;
Mark Marsden, Saffron Walden, GB;
Steven Walter Greendale, Cambridge, GB;
Nigel James Watson, Whittlesford, GB;
Ian Christopher Stroud, Newport, GB;
Timothy David Howe, Great Shelford, GB;
Gerard Edward Smith, Great Dunmow, GB;
Colin Richard Smithers, Bishop's Stortford, GB;
LoJack Operating Company LP, Westwood, MA (US);
Abstract
A vehicle locating unit with a receiver for receiving a signal from a network of communication sources, a transponder activated when a communication source sends a message to the receiver, and a power supply regulating circuit for regulating a nominal input voltage and powering the receiver and the transponder. A protection circuit is responsive to an injected input voltage and configured to clamp the injected (high level) input voltage at a predetermined maximum voltage.