Inventor
Hiroshi Takegawa
Inventor
Tokyo, 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%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests38%
H04LTransmission of digital information, e.g. telegraphic communication13%
PatentTitleYear
9,692,608'Communication management apparatus, program, communication management method, and communication management system'20177,730,069'Full-text search device performing merge processing by using full-text index-for-registration/ deletion storage part with performing registration/deletion processing by using other full-text index-for-registration/deletion storage part'20107,644,097'Full-text search device performing merge processing by using full-text index-for-registration/deletion storage part with performing registration/deletion processing by using other full-text index-for-registration/deletion storage part'20105,680,612'Document retrieval apparatus retrieving document data using calculated record identifier'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2010Patents assigned to RICOH KK (3)· patent assignee history
1997Based in Yokohama, JP· patent location history
2010–2017Based in Tokyo, JP· patent location history
2017Patents assigned to RICOH CO LTD (1)· patent assignee history
2017Patents assigned to TAKEGAWA HIROSHI (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH KK | 3 | 1997–2010 |
| RICOH CO LTD | 1 | 2017 |
| TAKEGAWA HIROSHIself | 1 | 2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 3 | 2010–2017 |
| Yokohama, JP | 1 | 1997 |