Inventor
Hirotaka Nakagawa
Inventor
Sagamihara, JP
Overview
Patents· 32 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G06Fprimary
G06FElectric digital data processing61%
H04LTransmission of digital information, e.g. telegraphic communication11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy5%
Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use5%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution5%
B22FWorking metallic powder2%
B23KSoldering or unsoldering2%
C22CAlloys2%
PatentTitleYear
11,048,543Computer system and resource access control method for securely controlling access using roles with a plurality of users202110,761,767Computer system and method for controlling storage apparatus that has replication direction from first logical device (in first storage) to second logical device (in second storage) and from said second logical device to third logical device (in said second storage), wherein said replication direction is reversed when second computer takes over for first computer202010,762,021Information processing system, and control method of information processing system202010,013,216Storage system20189,395,926'Storage system and management computer'20169,270,742'Computer system and control method of computer system'20169,262,437'Storage system and control method for storage system'20169,092,158'Computer system and its management method'20159,052,839'Virtual storage apparatus providing a plurality of real storage apparatuses'20158,935,537'Storage device and its control method'20158,768,883'Storage apparatus and control method of the same'20148,713,307'Computer system and volume migration control method using the same'20148,639,775'Computer system and its management method'20148,499,098'Storage system and storage system communication path management method'20138,452,923'Storage system and management method thereof'20138,341,425'Storage device and its control method'20128,151,047'Storage system and management method thereof'20128,074,090'Storage system including plurality of storage apparatuses'20118,074,091'Storage apparatus for power saving and achieving longest mean time between failures'20117,996,611'Backup data management system and backup data management method'20117,653,784'Management computer, power supply control method and computer system'20107,502,907'Method, device and program for managing volume'20097,376,746'Method and program for disclosing and providing services on network'20087,366,867'Computer system and storage area allocation method'20087,260,699'Method, device and program for managing volume'20077,249,240'Method, device and program for managing volume'20077,181,516'Method for allocating storage regions and performance guarantee method based on hints, storage device and management program'20075,049,458'Fuel cell'19914,937,152'Fuel cell'19904,886,547'Powder manufacturing apparatus and method therefor'19894,764,209'Method for manufacturing alloy'19884,450,018'Fused flux for inclined submerged arc welding'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984–1991Patents assigned to NIPPON KOKAN KK (5)· patent assignee history
1988–2021Based in Tokyo, JP· patent location history
1989Based in Chiyoda-ku, JP· patent location history
2007–2021Patents assigned to HITACHI LTD (27)· patent assignee history
2007–2011Based in Fujisawa, JP· patent location history
2011–2014Patents assigned to NAKAGAWA HIROTAKA (9)· patent assignee history
2011–2013Patents assigned to ASANO MASAYASU (4)· patent assignee history
2011–2013Patents assigned to TAGUCHI YUICHI (4)· patent assignee history
2011–2016Based in Sagamihara, JP· patent location history
2011Based in Sagamirhara, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 27 | 2007–2021 |
| NAKAGAWA HIROTAKAself | 9 | 2011–2014 |
| NIPPON KOKAN KK | 5 | 1984–1991 |
| ASANO MASAYASU | 4 | 2011–2013 |
| TAGUCHI YUICHI | 4 | 2011–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sagamihara, JP | 12 | 2011–2016 |
| Tokyo, JP | 10 | 1988–2021 |
| Fujisawa, JP | 7 | 2007–2011 |
| Sagamirhara, JP | 1 | 2011 |
| Chiyoda-ku, JP | 1 | 1989 |