Boolean text search combined with extended regular expression search

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United States of America Patent

PATENT NO 6681217
SERIAL NO

09426455

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Abstract

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In the field of computer text search engines, regular expression text pattern matching is combined with an extended set of Boolean operators. A pre-processor is described which will convert mixed Boolean-GREP expressions into equivalent pure GREP expressions enabling existing GREP search technology to be used to implement this invention. Additional optimizations are described when users need to search for any one of a list of text patterns.

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Patent Owner(s)

Patent OwnerAddress
WESTINGHOUSE AIR BRAKE COMPANYAIR BRAKE AVENUE PITTSBURGH PA 15148
KELSAN TECHNOLOGIES CORP1140-1148 WEST 15TH STREET NORTH VANCOUVER BC V7P 1M9

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lewak, Jerzy 107 S. Cedros Ave., Solana Beach, CA 92075 13 622

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