Inventor · disambiguated record
Yoko Kumagai
Also filed as: KUMAGAI YOKO
7 granted patents·6 pending applications·80 citations·filing 2001–2023
85Inventor score
Top patents by PatentIndex Score
13 records- 0185US7533269B2Digital-signed digital document exchange supporting method and information processorHITACHI LTD·Filed 2005·Granted May 12, 2009·16 cites·9 claims
- 0283US7409551B2Certificate validity authentication method and apparatusHITACHI LTD·Filed 2006·Granted Aug 5, 2008·13 cites·18 claims
- 0375US7080251B2Certificate validity authentication method and apparatusHITACHI LTD·Filed 2001·Granted Jul 18, 2006·24 cites·13 claims
- 0465US7409553B2Public key certificate generation method, validation method and apparatus thereofHITACHI LTD·Filed 2002·Granted Aug 5, 2008·16 cites·12 claims
- 0563US2025303411A1Fluid devicePROVIGATE INC·Filed 2023·Application pending·0 cites
- 0658US7558952B2Method and apparatus for accelerating public-key certificate validationHITACHI LTD·Filed 2004·Granted Jul 7, 2009·5 cites·14 claims
- 0756US2024109061A1Microplate, measurement method using the same, automatic measurement system, and programPROVIGATE INC·Filed 2022·Application pending·0 cites
- 0855US7392380B2Authentication and authorization infrastructure system with CRL issuance notification functionHITACHI LTD·Filed 2003·Granted Jun 24, 2008·5 cites·7 claims
- 0953US8516245B2Method, product and apparatus for accelerating public-key certificate validationKUMAGAI YOKO·Filed 2009·Granted Aug 20, 2013·1 cites·8 claims
- 1049US2024053352A1Method and apparatus for evaluating degree of glycation of proteinPROVIGATE INC·Filed 2022·Application pending·0 cites
- 1145US2021326315A1Information Recommendation System and Method for Recommending InformationHITACHI LTD·Filed 2021·Application pending·0 cites
- 1244US2022382711A1Data analysis system and data analysis methodHITACHI LTD·Filed 2020·Application pending·0 cites
- 1343US2004255116A1Electronic document management system with the use of signature technique capable of maskingFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →