Inventor
Tadaaki Ishikawa
Inventor
Tsuchiura, JP
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus28%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1016%
F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact6%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application6%
G01CMeasuring distances, levels or bearings6%
G09FDisplaying6%
B60GVehicle suspension arrangements3%
F25BRefrigeration machines, plants or systems3%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them3%
G05BControl or regulating systems in general3%
PatentTitleYear
10,222,791Operation assistance apparatus at time of accident in plant20199,950,587Inclination detection method, inclination detection apparatus, and equipment for detecting inclination20189,902,230'Inclination detection method, inclination detection apparatus, and equipment for detecting inclination'20188,674,849'Information display terminal'20147,696,897'Shelf-like display machine and image display method'20107,298,972'Optical switch and a control method thereof'20077,165,898'Optical module, method for manufacturing optical module and optical communication apparatus'20077,006,721'Optical switch and beam direction module'20066,726,375'Optical module, method for manufacturing optical module and optical communication apparatus'20046,511,191'Optical switch system and method for aligning optical axis therein'20036,457,877'Optical module, method for manufacturing optical module and optical communication apparatus'20026,332,720'Semiconductor laser coupling device and method for assembling the same on circuit board'20016,282,352'Optical module, method for manufacturing optical module and optical communication apparatus'20016,220,764'Optical module, method for manufacturing optical module and optical communication apparatus'20015,369,493'Component transporting apparatus and method'19945,358,034'Heat exchanger'19945,197,538'Heat exchanger apparatus having fluid coupled primary heat exchanger unit and auxiliary heat exchanger unit'1993Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1993–1994Patents assigned to ZEXEL CORP (2)· patent assignee history
1993–1994Based in Konan, JP· patent location history
1994–2019Patents assigned to HITACHI LTD (14)· patent assignee history
2001–2010Based in Tsuchiura, JP· patent location history
2001–2004Based in Tsutiura, JP· patent location history
2014Patents assigned to HORII YOUICHI (1)· patent assignee history
2014Patents assigned to HOSHINO TAKESHI (1)· patent assignee history
2014Patents assigned to ICHIGE YUKIKO (1)· patent assignee history
2014Based in Tuchiura, JP· patent location history
2018–2019Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 14 | 1994–2019 |
| ZEXEL CORP | 2 | 1993–1994 |
| HORII YOUICHI | 1 | 2014 |
| HOSHINO TAKESHI | 1 | 2014 |
| ICHIGE YUKIKO | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tsuchiura, JP | 5 | 2001–2010 |
| Tsutiura, JP | 4 | 2001–2004 |
| Tokyo, JP | 3 | 2018–2019 |
| Konan, JP | 2 | 1993–1994 |
| Tuchiura, JP | 1 | 2014 |