Inventor
Shigeru Izawa
Inventor
Mito, JP
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Jprimary
H01JElectric discharge tubes or discharge lamps47%
G11BInformation storage based on relative movement between record carrier and transducer13%
G01CMeasuring distances, levels or bearings7%
G01NInvestigating or analysing materials by determining their chemical or physical properties7%
G01RMeasuring electric variables7%
G01SRadio direction-finding7%
G05BControl or regulating systems in general7%
Y10TTechnical subjects covered by former us classification7%
PatentTitleYear
7,875,156'Probe storage container, prober apparatus, probe arranging method and manufacturing method of probe storage container'20117,804,073'Liquid metal ion gun'20107,435,972'Focused ion beam apparatus and liquid metal ion source'20087,420,181'Liquid metal ion gun'20087,211,805'Liquid metal ion gun'20077,189,982'Focused ion beam apparatus and aperture'20077,005,651'Liquid metal ion gun'20065,067,812'Systems for inspecting defects in an optical recording medium'19915,027,337'Optical recording medium and tracking method therefor'19915,012,092'Method and apparatus for fine movement of specimen stage of electron microscope'19914,881,214'Data record formatting system and reading/writing system for optical recording medium'19893,935,645'Apparatus for indicating relative azimuth'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976Patents assigned to KOMATSU MFG CO LTD (1)· patent assignee history
1976Based in Musashino, JP· patent location history
1989–1991Patents assigned to CSK CORP (3)· patent assignee history
1989–1991Based in Tokyo, JP· patent location history
1991Patents assigned to HITACHI LTD (1)· patent assignee history
1991Based in Kanagawa, JP· patent location history
1991Based in Katsuta, JP· patent location history
2006–2011Patents assigned to HITACHI HIGH TECH CORP (7)· patent assignee history
2006–2011Based in Mito, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI HIGH TECH CORP | 7 | 2006–2011 |
| CSK CORP | 3 | 1989–1991 |
| HITACHI LTD | 1 | 1991 |
| KOMATSU MFG CO LTD | 1 | 1976 |
Locations
| Location | Patents | Span |
|---|---|---|
| Mito, JP | 7 | 2006–2011 |
| Tokyo, JP | 2 | 1989–1991 |
| Kanagawa, JP | 1 | 1991 |
| Katsuta, JP | 1 | 1991 |
| Musashino, JP | 1 | 1976 |