Inventor · disambiguated record
Takehisa Kato
Also filed as: KATO TAKEHISA
27 granted patents·7 pending applications·906 citations·filing 1996–2018
97Inventor score
Files withTOSHIBA KK14KAWASAKI HEAVY IND LTD5MATSUSHITA ELECTRIC INDUSTRIAL CO LTD3KATO TAKEHISA2WAKO PURE CHEM IND LTD2
Top patents by PatentIndex Score
34 records- 0197US6301663B1Copy protection apparatus and information recording medium used in this copy protection apparatusTOSHIBA KK·Filed 1998·Granted Oct 9, 2001·139 cites·10 claims
- 0296US6347145B2Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keysTOSHIBA KK·Filed 1997·Granted Feb 12, 2002·97 cites·23 claims
- 0393US6343281B1Device and method for preventing fraudulent copies of data containing encrypted copy-management information and recording mediumTOSHIBA KK·Filed 1998·Granted Jan 29, 2002·88 cites·11 claims
- 0488US6438692B2Copy protection apparatus and information recording medium used in this copy protection apparatusTOSHIBA KK·Filed 2001·Granted Aug 20, 2002·43 cites·9 claims
- 0586US8397291B2Access control system, device, and programMIYAZAKI SHINGO·Filed 2007·Granted Mar 12, 2013·14 cites·18 claims
- 0685US6381331B1Information sending system and method for sending encrypted informationTOSHIBA KK·Filed 1998·Granted Apr 30, 2002·158 cites·13 claims
- 0784US8184807B2Content distribution/browsing system, content distribution apparatus, content browsing apparatus and programKATO TAKEHISA·Filed 2008·Granted May 22, 2012·21 cites·13 claims
- 0883US8074068B2Secret sharing device, method, and programFUJII YOSHIHIRO·Filed 2008·Granted Dec 6, 2011·14 cites·7 claims
- 0983US7433474B2Method and apparatus of enciphering and deciphering data using keys enciphered and deciphered with other keysTOSHIBA KK·Filed 2002·Granted Oct 7, 2008·13 cites·10 claims
- 1080US8077863B2Secret sharing apparatus, method, and programHOSAKA NORIKAZU·Filed 2008·Granted Dec 13, 2011·15 cites·9 claims
- 1179US6556679B1Copy-guard system and information recording medium used in the same systemTOSHIBA KK·Filed 1998·Granted Apr 29, 2003·66 cites·40 claims
- 1279US6009174ASecret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decodedMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Dec 28, 1999·57 cites·14 claims
- 1377US11035100B2Hydraulic drive system of construction machineKAWASAKI HEAVY IND LTD·Filed 2018·Granted Jun 15, 2021·2 cites·8 claims
- 1476US11274417B2Hydraulic drive system of construction machineKAWASAKI HEAVY IND LTD·Filed 2018·Granted Mar 15, 2022·2 cites·13 claims
- 1575US5984174AMethod of printing bar codes on pieces to deliver, and method and system for encoding and decoding bar codesTOSHIBA KK·Filed 1996·Granted Nov 16, 1999·55 cites·58 claims
- 1674US6751321B1Digital data reproduction deviceTOSHIBA KK·Filed 1998·Granted Jun 15, 2004·47 cites·18 claims
- 1766US10900199B2Drive system of construction machineKAWASAKI HEAVY IND LTD·Filed 2018·Granted Jan 26, 2021·1 cites·10 claims
- 1865US10167613B2Hydraulic drive system of construction machineKAWASAKI HEAVY IND LTD·Filed 2015·Granted Jan 1, 2019·1 cites·7 claims
- 1963US10612212B2Hydraulic excavator drive systemKAWASAKI HEAVY IND LTD·Filed 2017·Granted Apr 7, 2020·1 cites·10 claims
- 2062US2008279383A1Method and apparatus of enciphering and deciphering data using multiple keysTOSHIBA KK·Filed 2008·Application pending·0 cites
- 2157US7519992B2Access control system, device, and programTOSHIBA KK·Filed 2003·Granted Apr 14, 2009·4 cites·3 claims
- 2255US9129262B2Shop apparatus and purchaser apparatusYOSHIDA TAKUYA·Filed 2007·Granted Sep 8, 2015·1 cites·4 claims
- 2355US2009049147A1Recipient apparatus, file server apparatus and programKATO TAKEHISA·Filed 2008·Application pending·0 cites
- 2454US7272717B2System of authentication, apparatus, program and methodTOSHIBA KK·Filed 2003·Granted Sep 18, 2007·4 cites·25 claims
- 2552US6160890ASecret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decodedMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Dec 12, 2000·24 cites·19 claims
- 2651US6151394AEncrypted communication system that limits the damage caused when a secret key has been leakedMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Nov 21, 2000·28 cites·3 claims
- 2750US2010269903A1Process for producing polycrystalline silicon substrate and polycrystalline silicon substrateMIMASU SEMICONDUCTOR IND CO·Filed 2008·Application pending·0 cites
- 2850US2007255661A1Anonymous order system, an anonymous order apparatus, and a program thereforYOSHIDA TAKUYA·Filed 2005·Application pending·0 cites
- 2948US7700532B2Cleaning composition and method of cleaning therewithWAKO PURE CHEM IND LTD·Filed 2003·Granted Apr 20, 2010·2 cites·6 claims
- 3047US7995763B2User apparatus and programTOSHIBA KK·Filed 2008·Granted Aug 9, 2011·0 cites·6 claims
- 3145US2009227115A1Etching solution for substrateWAKO PURE CHEM IND LTD·Filed 2007·Application pending·0 cites
- 3239US2002040431A1Computer program product and method for exchanging XML signatureFiled 2001·Application pending·0 cites
- 3336US6327654B1Semiconductor integrated circuit for cryptographic process and encryption algorithm alternating methodTOSHIBA KK·Filed 1998·Granted Dec 4, 2001·9 cites·19 claims
- 3436US2006184666A1Anonymity service providing system, device, and programNOZAWA YUKITERU·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →