Inventor
Yuichi Kadokawa
Inventor
Tokyo, JP
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer38%
H03MCoding38%
G06FElectric digital data processing15%
H03KPulse technique8%
PatentTitleYear
7,652,966'Information recording method and apparatus, information reproducing method and apparatus, and recording medium'20107,382,708'Data recording/reproducing device'20087,046,610'Recording medium suitable for recording/reproducing multi-level data'20066,888,479'Data processing method, circuit, and apparatus with increased accuracy'20055,438,601'Reference clock frequency divider'19955,414,720'Device and method using second error correction code for data in a recording medium'19955,099,483'Device for correcting errors by a long-distance code'19924,937,829'Error correcting system and device'19904,870,685'Voice signal coding method'1989Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1989–2010Patents assigned to RICOH KK (9)· patent assignee history
1989–1995Based in Tokyo, JP· patent location history
2005–2010Based in Kanagawa, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH KK | 9 | 1989–2010 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 5 | 1989–1995 |
| Kanagawa, JP | 4 | 2005–2010 |