Inventor
Hisashi Umeki
Inventor
Yokohama, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G06Fprimary
G06FElectric digital data processing50%
H04LTransmission of digital information, e.g. telegraphic communication50%
PatentTitleYear
9,372,995'Vulnerability countermeasure device and vulnerability countermeasure method'20166,512,829'Key distribution method and system in secure broadcast communication'20036,189,032'Client-server system for controlling access rights to certain services by a user of a client terminal'20016,041,408'Key distribution method and system in secure broadcast communication'2000Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2000–2016Patents assigned to HITACHI LTD (4)· patent assignee history
2000–2003Based in Yokohama, JP· patent location history
2016Patents assigned to KAI SATOSHI (1)· patent assignee history
2016Patents assigned to KAJI TADASHI (1)· patent assignee history
2016Patents assigned to KITO TETSURO (1)· patent assignee history
2016Patents assigned to NAKAKOJI HIROFUMI (1)· patent assignee history
2016Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 4 | 2000–2016 |
| KAI SATOSHI | 1 | 2016 |
| KAJI TADASHI | 1 | 2016 |
| KITO TETSURO | 1 | 2016 |
| NAKAKOJI HIROFUMI | 1 | 2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 3 | 2000–2003 |
| Tokyo, JP | 1 | 2016 |