Inventor
Hideyoshi Yamaoka
Inventor
Matsubara, JP
Overview
Patents· 16 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 transducer52%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%
Y10TTechnical subjects covered by former us classification10%
C23CCoating metallic material7%
B29CShaping or joining of plastics3%
B29DProducing particular articles from plastics or from substances in a plastic state3%
B29LIndexing scheme associated with subclass b29c, relating to particular articles3%
G03HHolographic processes or apparatus3%
H01FMagnets3%
H04NPictorial communication, e.g. television3%
PatentTitleYear
5,738,765'Magneto-optic memory device'19985,714,251'Magneto-optic memory device'19985,331,623'Optical retrieval system for encoding pit angular data and optical recording element therefor'19945,214,636'Optical recording element having a plurality of thin film filtering layers and optical recording element having an electrically conductive layer'19935,200,941'Optical retrieval system for encoding pit angular data and optical recording element thereof'19935,013,494'Process for preparing blazed holograms'19914,988,165'Object lens driving device'19914,739,431'Thin-film magnetic head'19884,721,368'Optical system in a magneto-optical memory device'19884,660,190'Optical focus position control in optical disc apparatus'19874,658,393'Optical memory disc'19874,658,390'Optical focus position control in an optical memory system'19874,634,617'Optical memory disc'19874,610,912'Magneto-optic memory element'19864,573,149'Magneto-optical head assembly with improved detection means'19864,544,443'Method for manufacturing an optical memory element'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985Patents assigned to SHAP KABUSHIKI KAISHA (1)· patent assignee history
1985–1998Based in Matsubara, JP· patent location history
1986–1998Patents assigned to SHARP KK (15)· patent assignee history
1991Based in Osaka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SHARP KK | 15 | 1986–1998 |
| SHAP KABUSHIKI KAISHA | 1 | 1985 |
Locations
| Location | Patents | Span |
|---|---|---|
| Matsubara, JP | 15 | 1985–1998 |
| Osaka, JP | 1 | 1991 |