49 US patents granted on 02 February 2010 and assigned to Hitachi
| 1 | D609,180 | Power inverter |
| 2 | 7,657,841 | Monitor display for construction machine |
| 3 | 7,657,817 | Recording and reproducing data to/from a recording medium having a user data area and an information area for storing information about the recording medium |
| 4 | 7,657,794 | Data storage device and error recovery method |
| 5 | 7,657,786 | Storage switch system, storage switch method, management server, management method, and management program |
| 6 | 7,657,778 | Computer system and boot control method |
| 7 | 7,657,768 | Disk array optimizing the drive operation time |
| 8 | 7,657,727 | Security for logical unit in storage subsystem |
| 9 | 7,657,721 | Method of maintaining a plurality of snapshots, server apparatus and storage apparatus |
| 10 | 7,657,720 | Storage apparatus and method of managing data using the storage apparatus |
| 11 | 7,657,707 | Storage controller |
| 12 | 7,657,676 | Integrated circuit device and signal transmission system |
| 13 | 7,657,584 | Reorganization method of database and a database reorganization system |
| 14 | 7,657,282 | Multimode wireless communication apparatus and high frequency integrated circuit therefor |
| 15 | 7,657,158 | Recording medium and method for reproducing information therefrom |
| 16 | 7,657,136 | Optoelectronic integrated circuit device and communications equipment using same |
| 17 | 7,657,078 | Method and apparatus for reviewing defects |
| 18 | 7,657,035 | Encryption communication method and system |
| 19 | 7,656,960 | Adaptive modulation method and coding rate control method |
| 20 | 7,656,918 | Semiconductor laser |
| 21 | 7,656,887 | Traffic control method for network equipment |
| 22 | 7,656,872 | Packet forwarding apparatus and communication network suitable for wide area Ethernet service |
| 23 | 7,656,806 | Storage system, path management method and path management device |
| 24 | 7,656,771 | Optical pickup and optical disc drive |
| 25 | 7,656,624 | IC power protection circuit |
| 26 | 7,656,611 | Laminated high moment magnetic films antiferromagnetic coupling as write pole of perpendicular magnetic recording head |
| 27 | 7,656,483 | Liquid crystal display |
| 28 | 7,656,471 | Liquid crystal display device |
| 29 | 7,656,468 | Display device and manufacturing method of the display device |
| 30 | 7,656,274 | Group analysis system and group analysis equipment |
| 31 | 7,656,171 | Method and apparatus for reviewing defects by detecting images having voltage contrast |
| 32 | 7,656,154 | Magnetic field measurement system and optical pumping magnetometer |
| 33 | 7,656,081 | Imaging device with specific phosphor |
| 34 | 7,656,041 | Semiconductor device and its manufacturing method |
| 35 | 7,655,950 | Method of manufacturing an active matrix substrate and an image display device using the same |
| 36 | 7,655,947 | Thin film transistor used as a switching element in an active matrix type liquid crystal display device |
| 37 | 7,655,907 | Charged particle beam apparatus and pattern measuring method |
| 38 | 7,655,906 | Method and apparatus for scanning and measurement by electron beam |
| 39 | 7,655,510 | Manufacturing method of display device and exposure system for that |
| 40 | 7,655,457 | Cell culture vessel and cultured cell |
| 41 | 7,655,455 | Method of producing a nitrification carrier containing ammonia-oxidizing bacteria for removing nitrogen |
| 42 | 7,655,325 | Rare earth magnet and method for producing same |
| 43 | 7,655,122 | Oxygen concentration detecting element |
| 44 | 7,655,064 | Particulate matter-containing exhaust emission controlling filter, exhaust emission controlling method and device |
| 45 | 7,654,815 | Belt-shaped mold and nanoimprint system using the belt-shaped mold |
| 46 | 7,654,516 | Paper sheet running-out mechanism |
| 47 | 7,654,396 | Classifier, vertical crusher having the classifier, and coal fired boiler apparatus having the vertical crusher |
| 48 | 7,654,232 | Hydrogen engine system |
| 49 | 7,654,094 | Radial turbine and method of cooling nozzle of the same |
