Inventor · disambiguated record
Katsuyuki Takashima
Also filed as: TAKASHIMA KATSUYUKI
28 granted patents·5 pending applications·137 citations·filing 2004–2023
95Inventor score
Files withTAKASHIMA KATSUYUKI15MITSUBISHI ELECTRIC CORP14HATTORI MITSUHIRO2ICHIKAWA SACHIHIRO1KAWAI YUTAKA1
Top patents by PatentIndex Score
33 records- 0193US8290146B2Ciphertext generating apparatus, cryptographic communication system, and group parameter generating apparatusTAKASHIMA KATSUYUKI·Filed 2007·Granted Oct 16, 2012·36 cites·15 claims
- 0287US8938623B2Cryptographic processing system, key generation device, encryption device, decryption device, cryptographic processing method, and cryptographic processing programTAKASHIMA KATSUYUKI·Filed 2011·Granted Jan 20, 2015·12 cites·8 claims
- 0387US8111826B2Apparatus for generating elliptic curve cryptographic parameter, apparatus for processing elliptic curve cryptograph, program for generating elliptic curve cryptographic parameter, and program for processing elliptic cyptographTAKASHIMA KATSUYUKI·Filed 2006·Granted Feb 7, 2012·19 cites·44 claims
- 0486US8913742B2Cryptographic processing system, key generation device, encryption device, decryption device, signature processing system, signature device, and verification deviceTAKASHIMA KATSUYUKI·Filed 2011·Granted Dec 16, 2014·11 cites·15 claims
- 0585US8958552B2Data processing deviceHATTORI MITSUHIRO·Filed 2009·Granted Feb 17, 2015·15 cites·15 claims
- 0682US8559638B2Cryptographic processing systemTAKASHIMA KATSUYUKI·Filed 2010·Granted Oct 15, 2013·6 cites·47 claims
- 0781US8458479B2Verification apparatusTAKASHIMA KATSUYUKI·Filed 2008·Granted Jun 4, 2013·10 cites·19 claims
- 0879US9344276B2Cryptographic system, re-encryption key generation device, re-encryption device, cryptographic method, and cryptographic programKAWAI YUTAKA·Filed 2013·Granted May 17, 2016·8 cites·10 claims
- 0976US9413531B2Cryptographic system, cryptographic method, cryptographic program, and decryption deviceMITSUBISHI ELECTRIC CORP·Filed 2013·Granted Aug 9, 2016·4 cites·12 claims
- 1071US11533176B2Decryption device, encryption device, and cryptographic systemMITSUBISHI ELECTRIC CORP·Filed 2020·Granted Dec 20, 2022·1 cites·9 claims
- 1171US10516534B2Cryptographic system and key generation apparatusMITSUBISHI ELECTRIC CORP·Filed 2015·Granted Dec 24, 2019·2 cites·6 claims
- 1270US9183411B2Cryptographic processing system, key generation device, encryption device, decryption device, cryptographic processing method, and cryptographic processing program utilizing attribute information for generation of a key for decryption or encryptionTAKASHIMA KATSUYUKI·Filed 2011·Granted Nov 10, 2015·3 cites·8 claims
- 1370US8577030B2Cryptographic processing system, key generation device, key delegation device, encryption device, decryption device, cryptographic processing method, and cryptographic processing programTAKASHIMA KATSUYUKI·Filed 2010·Granted Nov 5, 2013·3 cites·5 claims
- 1465US9106408B2Signature processing system, key generation device, signature device, verification device, signature processing method, and signature processing programTAKASHIMA KATSUYUKI·Filed 2011·Granted Aug 11, 2015·2 cites·10 claims
- 1563US9640090B2Cryptographic system and computer readable mediumMITSUBISHI ELECTRIC CORP·Filed 2014·Granted May 2, 2017·1 cites·9 claims
- 1660US9385867B2Cryptographic processing system, key generation device, encryption device, decryption device, key delegation device, cryptographic processing method, and cryptographic processing programTAKASHIMA KATSUYUKI·Filed 2011·Granted Jul 5, 2016·1 cites·12 claims
- 1759US9237013B2Encrypted data management device, encrypted data management method, and encrypted data management programICHIKAWA SACHIHIRO·Filed 2011·Granted Jan 12, 2016·3 cites·11 claims
- 1858US12388621B2Cryptographic system, encryption device, decryption device, and key generation deviceMITSUBISHI ELECTRIC CORP·Filed 2023·Granted Aug 12, 2025·0 cites·15 claims
- 1953US11888968B2Signature device, verification device, signature method, verification method, and computer readable mediumMITSUBISHI ELECTRIC CORP·Filed 2021·Granted Jan 30, 2024·0 cites·13 claims
- 2051US11909873B2Decryption device, cryptographic system, and decryption methodMITSUBISHI ELECTRIC CORP·Filed 2021·Granted Feb 20, 2024·0 cites·8 claims
- 2148US9755823B2Cryptographic system, cryptographic method, and computer readable mediumMITSUBISHI ELECTRIC CORP·Filed 2013·Granted Sep 5, 2017·0 cites·12 claims
- 2247US9203622B2Cryptographic processing system, cryptographic processing method, cryptograhpic processing program, and key generation deviceTAKASHIMA KATSUYUKI·Filed 2012·Granted Dec 1, 2015·0 cites·15 claims
- 2347US8401179B2Encryption parameter setting apparatus, key generation apparatus, cryptographic system, program, encryption parameter setting method, and key generation methodTAKASHIMA KATSUYUKI·Filed 2008·Granted Mar 19, 2013·0 cites·23 claims
- 2445US2007053506A1Elliptic curve encryption processor, processing method of the processor using elliptic curves, and program for causing a computer to execute point scalar multiplication on elliptic curvesTAKASHIMA KATSUYUKI·Filed 2004·Application pending·0 cites
- 2544US9979536B2Cryptographic system, encryption device, re-encryption key generation device, re-encryption device, and cryptographic programMITSUBISHI ELECTRIC CORP·Filed 2013·Granted May 22, 2018·0 cites·9 claims
- 2644US9722783B2Cryptographic systemMITSUBISHI ELECTRIC CORP·Filed 2013·Granted Aug 1, 2017·0 cites·12 claims
- 2744US9407438B2Cryptographic system, cryptographic method, and cryptographic programTAKASHIMA KATSUYUKI·Filed 2013·Granted Aug 2, 2016·0 cites·11 claims
- 2844US2016344708A1Cryptographic system, re-encryption key generation device, re-encryption device, and cryptographic computer readable mediumMITSUBISHI ELECTRIC CORP·Filed 2014·Application pending·0 cites
- 2942US2020175893A1Encryption device, decryption device, encryption method, decryption method, and computer readable mediumMITSUBISHI ELECTRIC CORP·Filed 2017·Application pending·0 cites
- 3041US11171778B2Key sharing device, key sharing method, and computer readable mediumMITSUBISHI ELECTRIC CORP·Filed 2018·Granted Nov 9, 2021·0 cites·4 claims
- 3141US2016330022A1Cryptographic system, key generation apparatus, re-encryption apparatus and user terminalMITSUBISHI ELECTRIC CORP·Filed 2014·Application pending·0 cites
- 3239US8929542B2Cryptographic processing system, key generation device, key delegation device, encryption device, decryption device, cryptographic processing method, and cryptographic processing programTAKASHIMA KATSUYUKI·Filed 2010·Granted Jan 6, 2015·0 cites·6 claims
- 3338US2012324240A1Secure search system, public parameter generation device, encryption device, user secret key generation device, query issuing device, search device, computer program, secure search method, public parameter generation method, encryption method, user secret key generation method, query issuing method, and search methodHATTORI MITSUHIRO·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →