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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.:

US 7400972 B1

PDFFull Text
Date of Patent:
Jul. 15, 2008

Filed:

Jun. 14, 2004

Method and system for route calculation that avoids railroad crossings

Applicant:

Frank J. Kozak, Naperville, IL (US);

Inventor:

Frank J. Kozak, Naperville, IL (US);

Assignee:

Navteq North America, LLC, Chicago, IL (US);

Attorneys:

Lisa M. Schoedel

Frank J. Kozak

Jon D. Shutter

Primary Examiner:

Yonel Beaulieu

Int. Cl.
CPC ...
G21C 21/32 (2006.01); G08G 1/123 (2006.01);
U.S. Cl.
CPC ...
Abstract

A navigation system provides information about railroad crossing locations. A geographic database used by the navigation system includes data that indicate whether an at-grade railroad crossing is located along a road segment. Using this information, a route calculation function in the navigation system calculates a route to a destination that avoids road segments that have at-grade railroad crossings. In this way, the delays associated with waiting for a train to cross a road are avoided.

Find Patent Forward Citations

Kozak, Frank. (2008). Method and system for route calculation that avoids railroad crossings (U.S. Patent No. 7400972). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7400972

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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