Inventor · disambiguated record
Takahiko Kawatani
Also filed as: KANEKO HIROSHI · KAWATANI TAKAHIKO
15 granted patents·1 pending application·923 citations·filing 1978–2009
95Inventor score
Files withHEWLETT PACKARD DEVELOPMENT CO10NIPPON TELEGRAPH & TELEPHONE2HEWLETT PACKARD CO1HEWLETT PARKARD COMPANY1KAWATANI TAKAHIKO1
Top patents by PatentIndex Score
16 records- 0198US7499923B2Document clustering method and apparatus based on common information of documentsHEWLETT PACKARD DEVELOPMENT CO·Filed 2004·Granted Mar 3, 2009·303 cites·9 claims
- 0291US7200802B2Evaluating distinctiveness of documentHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Apr 3, 2007·77 cites·18 claims
- 0390US6671404B1Method and apparatus for recognizing patternsHEWLETT PACKARD DEVELOPMENT CO·Filed 1998·Granted Dec 30, 2003·178 cites·28 claims
- 0489US7185008B2Document classification method and apparatusHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Feb 27, 2007·63 cites·28 claims
- 0586US7562066B2Method of vector analysis for a documentHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted Jul 14, 2009·43 cites·3 claims
- 0684US7392175B2Evaluating commonality of documents using segment vector, co-occurrence matrix, and common co-occurrence matrixHEWLETT PACKARD DEVELOPMENT CO·Filed 2003·Granted Jun 24, 2008·40 cites·33 claims
- 0780US5602938AMethod of generating dictionary for pattern recognition and pattern recognition method using the sameNIPPON TELEGRAPH & TELEPHONE·Filed 1994·Granted Feb 11, 1997·105 cites·20 claims
- 0874US7194461B2Document and information retrieval method and apparatusHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted Mar 20, 2007·20 cites·16 claims
- 0966US8171026B2Method and vector analysis for a documentKAWATANI TAKAHIKO·Filed 2009·Granted May 1, 2012·4 cites·12 claims
- 1066US4163214ACharacter recognition systemNIPPON TELEGRAPH & TELEPHONE·Filed 1978·Granted Jul 31, 1979·16 cites·5 claims
- 1153US7225120B2Method of extracting important terms, phrases, and sentencesHEWLETT PACKARD DEVELOPMENT CO·Filed 2002·Granted May 29, 2007·3 cites·18 claims
- 1252US6038343ACharacter recognition method and apparatus using writer-specific reference vectors generated during character-recognition processingHEWLETT PARKARD COMPANY·Filed 1997·Granted Mar 14, 2000·27 cites·18 claims
- 1351US7308138B2Document segmentation methodHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted Dec 11, 2007·2 cites·16 claims
- 1450US6778704B1Method and apparatus for pattern recognition using a recognition dictionary partitioned into subcategoriesHEWLETT PACKARD DEVELOPMENT CO·Filed 1997·Granted Aug 17, 2004·33 cites·7 claims
- 1545US2005097436A1Classification evaluation system, method, and programFiled 2004·Application pending·0 cites
- 1636US6466926B1Method for optimizing a recognition dictionary to distinguish between patterns that are difficult to distinguishHEWLETT PACKARD CO·Filed 1997·Granted Oct 15, 2002·9 cites·21 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →