Inventor
Hiroshi Naka
Inventor
Komoro, JP
Overview
Patents· 24 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus20%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1013%
G03GElectrography11%
B42CBookbinding9%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables9%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light9%
H10HInorganic light-emitting semiconductor devices having potential barriers9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
C05GMixtures of fertilisers covered individually by different subclasses of class c052%
G01NInvestigating or analysing materials by determining their chemical or physical properties2%
PatentTitleYear
7,275,453'Analyzing apparatus and fine particle collecting apparatus'20077,052,189'Optical electronic device'20066,721,511'Optical communication equipment and optical communication network equipment'20046,668,140'Module for optical communication'20036,490,497'Working process end point real time determination method'20026,476,379'Optoelectronic devices and manufacturing method thereof'20026,461,059'Photo-electronic device and method of producing the same'20026,443,632'Photo-electronic device and method of producing the same'20026,371,664'Photoelectronic device and method of manufacturing the same'20026,341,027'Module for optical communication'20026,282,350'Photoelectronic device and method of manufacturing the same'20015,761,580'Photoreceptor drum driving mechanism'19985,645,624'Granular fertilizer with a multilayer coating'19975,639,079'Device for further processing after copying'19975,605,322'Device for further processing after copying'19975,480,130'Device for further processing after copying'19965,435,535'Device for further processing after copying'19955,344,130'Device for further processing after copying'1994RE034378'Light emitting device with improved electrode structure to minimize short circuiting'19934,785,455'Light emitting device with improved electrode structure to minimize short circuiting'19884,779,281'Light emitting chip and optical communication apparatus using the same'19884,701,927'Light emitting chip and optical communication apparatus using the same'19874,692,927'Light emitting device with improved electrode structure to minimize short circuiting'19874,094,676'Non-silver salt type photosensitive composition'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1997Patents assigned to ASAHI CHEMICAL IND (2)· patent assignee history
1978–1997Based in Yokohama, JP· patent location history
1987–2007Patents assigned to HITACHI LTD (13)· patent assignee history
1987–2007Based in Komoro, JP· patent location history
1994–1998Patents assigned to SHARP KK (6)· patent assignee history
1994–1998Based in Nara, JP· patent location history
1996Based in Naka, JP· patent location history
2002Patents assigned to NEC CORP (1)· patent assignee history
2002Based in Tokyo, JP· patent location history
2006Patents assigned to RENESAS TECH CORP (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 13 | 1987–2007 |
| SHARP KK | 6 | 1994–1998 |
| ASAHI CHEMICAL IND | 2 | 1978–1997 |
| NEC CORP | 1 | 2002 |
| RENESAS TECH CORP | 1 | 2006 |
Locations
| Location | Patents | Span |
|---|---|---|
| Komoro, JP | 15 | 1987–2007 |
| Nara, JP | 5 | 1994–1998 |
| Yokohama, JP | 2 | 1978–1997 |
| Tokyo, JP | 1 | 2002 |
| Naka, JP | 1 | 1996 |