Inventor · disambiguated record
Youichi Takashima
Also filed as: TAKASHIMA YOUICHI
13 granted patents·2 pending applications·531 citations·filing 1995–2010
94Inventor score
Top patents by PatentIndex Score
15 records- 0192US6704431B1Method and apparatus for digital watermarkingNIPPON TELEGRAPH & TELEPHONE·Filed 1999·Granted Mar 9, 2004·106 cites·32 claims
- 0291US7072492B2Method and apparatus for digital watermarkingNIPPON TELEGRAPH & TELEPHONE·Filed 2003·Granted Jul 4, 2006·48 cites·8 claims
- 0386US5701343AMethod and system for digital information protectionNIPPON TELEGRAPH & TELEPHONE·Filed 1995·Granted Dec 23, 1997·143 cites·35 claims
- 0482US7164778B1Digital watermark embedding method, digital watermark embedding apparatus, and storage medium storing a digital watermark embedding programNIPPON TELEGRAPH & TELEPHONE·Filed 1999·Granted Jan 16, 2007·53 cites·20 claims
- 0574US7860270B2Digital watermark embedding method, digital watermark embedding apparatus, and storage medium storing a digital watermark embedding programNIPPON TELEGRAPH & TELEPHONE·Filed 2009·Granted Dec 28, 2010·4 cites·16 claims
- 0674US7792323B2Digital watermark embedding method, digital watermark embedding apparatus, and storage medium storing a digital watermark embedding programNIPPON TELEGRAPH & TELEPHONE·Filed 2006·Granted Sep 7, 2010·2 cites·11 claims
- 0773US7817818B2Digital watermark embedding method, digital watermark embedding apparatus, and storage medium storing a digital watermark embedding programNIPPON TELEGRAPH & TELEPHONE·Filed 2006·Granted Oct 19, 2010·4 cites·109 claims
- 0868US6769063B1Data converter and recording medium on which program for executing data conversion is recordedNIPPON TELEGRAPH & TELEPHONE·Filed 1999·Granted Jul 27, 2004·65 cites·54 claims
- 0967US6044463AMethod and system for message delivery utilizing zero knowledge interactive proof protocolNIPPON TELEGRAPH & TELEPHONE·Filed 1997·Granted Mar 28, 2000·57 cites·13 claims
- 1066US7978877B2Digital watermark embedding method, digital watermark embedding apparatus, and storage medium storing a digital watermark embedding programNIPPON TELEGRAPH & TELEPHONE·Filed 2010·Granted Jul 12, 2011·1 cites·3 claims
- 1158US6011848AMethod and system for message delivery utilizing zero knowledge interactive proof protocolNIPPON TELEGRAPH & TELEPHONE·Filed 1995·Granted Jan 4, 2000·36 cites·22 claims
- 1253US2010131768A1Method and apparatus for digital watermarkingOGAWA HIROSHI·Filed 2009·Application pending·0 cites
- 1348US2007067636A1Method and apparatus for digital watermarkingOGAWA HIROSHI·Filed 2006·Application pending·0 cites
- 1443US7640431B2Method and apparatus for digital watermarkingNIPPON TELEGRAPH & TELEPHONE·Filed 2003·Granted Dec 29, 2009·0 cites·8 claims
- 1539US7187769B1Method and apparatus for evaluating the strength of an encryptionNIPPON TELEGRAPH & TELEPHONE·Filed 1999·Granted Mar 6, 2007·12 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →