Inventor · disambiguated record
Masakatsu Matsuo
Also filed as: MATSUO MASAKATSU
22 granted patents·14 pending applications·72 citations·filing 2002–2025
93Inventor score
Files withPANASONIC IP MAN CO LTD12MATSUO MASAKATSU8TOSHIBA KK8PANASONIC CORP6MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2
Top patents by PatentIndex Score
36 records- 0192US9331984B2Secret sharing method and systemPANASONIC CORP·Filed 2013·Granted May 3, 2016·22 cites·20 claims
- 0287US8307208B2Confidential communication methodMATSUO MASAKATSU·Filed 2009·Granted Nov 6, 2012·19 cites·12 claims
- 0380US9742765B2Authentication system and authentication methodPANASONIC IP MAN CO LTD·Filed 2015·Granted Aug 22, 2017·4 cites·7 claims
- 0480US9692770B2Signature verification using unidirectional functionPANASONIC IP MAN CO LTD·Filed 2015·Granted Jun 27, 2017·5 cites·10 claims
- 0579US2025373416A1User base device, cryptographic communication system, and cryptographic communication methodTOSHIBA KK·Filed 2025·Application pending·0 cites
- 0671US8577039B2Cryptographic communication apparatus and cryptographic communication systemMATSUO MASAKATSU·Filed 2012·Granted Nov 5, 2013·3 cites·7 claims
- 0769US8245040B2Secret authentication systemMATSUO MASAKATSU·Filed 2009·Granted Aug 14, 2012·4 cites·2 claims
- 0868US10389531B2Authentication system and authentication methodPANASONIC IP MAN CO LTD·Filed 2017·Granted Aug 20, 2019·1 cites·20 claims
- 0968US10015159B2Terminal authentication system, server device, and terminal authentication methodPANASONIC IP MAN CO LTD·Filed 2015·Granted Jul 3, 2018·2 cites·7 claims
- 1068US9525557B2Certificate issuing system, client terminal, server device, certificate acquisition method, and certificate issuing methodPANASONIC IP MAN CO LTD·Filed 2015·Granted Dec 20, 2016·2 cites·11 claims
- 1167US8737617B2Encryption apparatus, decryption apparatus, encryption method, decryption method, and encryption/decryption systemMATSUO MASAKATSU·Filed 2010·Granted May 27, 2014·2 cites·11 claims
- 1266US9442890B2Distribution apparatus, restoration apparatus, distribution method, restoration method, and distribution and restoration systemPANASONIC CORP·Filed 2013·Granted Sep 13, 2016·2 cites·17 claims
- 1365US9883146B2Communication system, communication apparatus and communication methodPANASONIC CORP·Filed 2014·Granted Jan 30, 2018·1 cites·8 claims
- 1465US2023336335A1User base device, cryptographic communication system, and cryptographic communication methodTOSHIBA KK·Filed 2023·Application pending·0 cites
- 1564US8731196B2Decrypting apparatus, encrypting apparatus, decrypting method, encrypting method, and communication systemMATSUO MASAKATSU·Filed 2010·Granted May 20, 2014·2 cites·21 claims
- 1661US9654455B2Communication system, communication device, key management apparatus, and communication methodPANASONIC IP MAN CO LTD·Filed 2015·Granted May 16, 2017·1 cites·7 claims
- 1759US10230997B2Management device and image processing systemPANASONIC IP MAN CO LTD·Filed 2015·Granted Mar 12, 2019·1 cites·18 claims
- 1857US8261088B2Secret authentication systemMATSUO MASAKATSU·Filed 2009·Granted Sep 4, 2012·1 cites·20 claims
- 1952US12425199B2Cryptographic communication path monitoring system and monitoring methodTOSHIBA KK·Filed 2023·Granted Sep 23, 2025·0 cites·7 claims
- 2052US2023336330A1Encryption communication system, encryption communication apparatus, and encryption communication methodTOSHIBA KK·Filed 2023·Application pending·0 cites
- 2151US2024333480A1Secret sharing storage system, secret sharing storage method, and secret sharing storage apparatusTOSHIBA KK·Filed 2024·Application pending·0 cites
- 2249US12381713B2Encryption communication system, encryption communication apparatus, and encryption communicationTOSHIBA KK·Filed 2023·Granted Aug 5, 2025·0 cites·16 claims
- 2348US2009285389A1Electronic certification system and confidential communication systemPANASONIC CORP·Filed 2009·Application pending·0 cites
- 2448US2025310089A1Secret sharing-based storage method and secret sharing-based storage systemTOSHIBA KK·Filed 2025·Application pending·0 cites
- 2548US2009276622A1Secret authentication systemPANASONIC CORP·Filed 2009·Application pending·0 cites
- 2648US2025310097A1Secret sharing-based storage system and secret sharing-based storage methodTOSHIBA KK·Filed 2025·Application pending·0 cites
- 2744US8843747B2Communication apparatus and communication systemMATSUO MASAKATSU·Filed 2012·Granted Sep 23, 2014·0 cites·19 claims
- 2843US10783278B2Signature generation device, signature verification device, signature generation method, and signature verification methodPANASONIC IP MAN CO LTD·Filed 2015·Granted Sep 22, 2020·0 cites·17 claims
- 2942US9680639B2Secret sharing apparatus and secret sharing method that restores secret data from at least two of generated shared dataMATSUO MASAKATSU·Filed 2012·Granted Jun 13, 2017·0 cites·9 claims
- 3038US7257838B2Information processing system and information processing method capable of communicating with impermissible protocolMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Aug 14, 2007·0 cites·9 claims
- 3137US2022147640A1Secure secret sharing storage system using cloud servicePANASONIC CORP·Filed 2020·Application pending·0 cites
- 3237US2003158931A1Information equipment management systemMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Application pending·0 cites
- 3336US2017324567A1Signature verification device, signature generation device, signature processing system, signature verification method, and signature generation methodPANASONIC IP MAN CO LTD·Filed 2015·Application pending·0 cites
- 3436US2018176503A1Signature generation system, signature generation apparatus, and signature generation methodPANASONIC IP MAN CO LTD·Filed 2018·Application pending·0 cites
- 3529US2016218864A1Encryption device, encryption method, and delivery systemPANASONIC IP MAN CO LTD·Filed 2016·Application pending·0 cites
- 3629US2016014346A1Image processing system, image processing device, and image processing methodPANASONIC IP MAN CO LTD·Filed 2015·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →