Inventor
Tadashi Ishiguro
Inventor
Kanagawa, JP
Overview
Patents· 12 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 transducer31%
Y10TTechnical subjects covered by former us classification19%
B24DTools for grinding, buffing or sharpening12%
B24BMachines, devices, or processes for grinding or polishing8%
G02BOptical elements, systems or apparatus8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form4%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds4%
C23CCoating metallic material4%
C25FProcesses for the electrolytic removal of materials from objects4%
PatentTitleYear
8,603,652'Magnetic recording medium'20137,527,881'Cleaning medium'20097,086,623'Leader tape and magnetic tape cartridge'20066,916,521'Cleaning medium for magnetic recording apparatus'20056,443,827'Polishing member and process for producing the same'20026,012,969'Abrasive member for very high return loss optical connector ferrules'20005,639,284'Abrasive member'19975,479,311'Magnetic tape cassette having improved magnetic tape substrate and tape guide for reducing electrostatic charging'19955,415,933'Magnetic recording medium containing a biaxially oriented multilayer support'19954,946,534'Process for the preparation of magnetic recording disk'19904,379,809'Magnetic recording medium'19834,026,737'Method for coloring a stainless steel'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977Based in Hikari, JP· patent location history
1983–2006Patents assigned to FUJI PHOTO FILM CO LTD (9)· patent assignee history
1983–2002Based in Odawara, JP· patent location history
1990–2009Based in Kanagawa, JP· patent location history
2005Based in Kanagwa, JP· patent location history
2009–2013Patents assigned to FUJIFILM CORP (2)· patent assignee history
2013Patents assigned to ARAKI KATSUMI (1)· patent assignee history
2013Patents assigned to ISHIGURO TADASHI (1)· patent assignee history
2013Patents assigned to NAKAMURA KENICHI (1)· patent assignee history
2013Based in Minami-ashigara, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJI PHOTO FILM CO LTD | 9 | 1983–2006 |
| FUJIFILM CORP | 2 | 2009–2013 |
| ARAKI KATSUMI | 1 | 2013 |
| ISHIGURO TADASHIself | 1 | 2013 |
| NAKAMURA KENICHI | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kanagawa, JP | 7 | 1990–2009 |
| Odawara, JP | 2 | 1983–2002 |
| Minami-ashigara, JP | 1 | 2013 |
| Kanagwa, JP | 1 | 2005 |
| Hikari, JP | 1 | 1977 |