Inventor

KARASAWA KEI

JP6 patents

⚠️ This page may combine multiple inventors who share the name “KARASAWA KEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NIPPON TELEGRAPH & TELEPHONE

3 patents

US8352743B2Jan 8, 2013

Client device, key device, service providing apparatus, user authentication system, user authentication method, program, and recording medium

NIPPON TELEGRAPH & TELEPHONE7 citations82

US7861288B2Dec 28, 2010

User authentication system for providing online services based on the transmission address

NIPPON TELEGRAPH & TELEPHONE17 citations80

US7539858B2May 26, 2009

Packet encryption substituting device, method thereof, and program recording medium

NIPPON TELEGRAPH & TELEPHONE9 citations78

KARASAWA KEI

2 patents

US8595816B2Nov 26, 2013

User authentication system and method for the same

KARASAWA KEI13 citations79

US8775796B2Jul 8, 2014

Certificate authenticating method, certificate issuing device, and authentication device

KARASAWA KEI2 citations59

UENO NACHI

1 patent

US8291231B2Oct 16, 2012

Common key setting method, relay apparatus, and program

UENO NACHI15 citations77