51 US patents granted on 18 September 2007 and assigned to Hitachi
| 1 | 7,272,852 | Reserve/release control method |
| 2 | 7,272,843 | Broadcasting method and broadcast signal receiver apparatus |
| 3 | 7,272,841 | Disk for disk drive having crack blocking portions |
| 4 | 7,272,799 | Virtual machine system and virtual machine control method |
| 5 | 7,272,727 | Method for managing external storage devices |
| 6 | 7,272,693 | Storage system and back-up method for storage system |
| 7 | 7,272,686 | Storage system |
| 8 | 7,272,670 | Integrated multimedia system |
| 9 | 7,272,665 | Modular computer system and I/O module |
| 10 | 7,272,661 | Disk device and disk access route mapping |
| 11 | 7,272,465 | Chemical substance total management system, storage medium storing chemical substance management program and chemical substance total management method |
| 12 | 7,272,418 | Base station and wireless communication system |
| 13 | 7,272,325 | Optical transmission system for substantially equalizing the output signal level among frequency bands and substantially lowering the signal-to-noise ratio |
| 14 | 7,272,314 | Optical crossconnect apparatus and optical transmission system |
| 15 | 7,272,279 | Waveguide type optical branching device |
| 16 | 7,272,253 | Method for non-destructive inspection, apparatus thereof and digital camera system |
| 17 | 7,272,200 | Phase shifter, phase shifting method and skew compensation system for high-speed parallel signaling |
| 18 | 7,272,185 | Moving picture encoding apparatus |
| 19 | 7,272,134 | Internet telephone connection method, bandwidth controller and gate keeper |
| 20 | 7,272,068 | Semiconductor device |
| 21 | 7,272,004 | Frequency converter |
| 22 | 7,271,982 | Perpendicular magnetic recording head built using an air-bearing surface damascene process |
| 23 | 7,271,976 | Magnetic disk drive and method for seek operations with reduced noise |
| 24 | 7,271,975 | Controlling head flying height in a data storage device |
| 25 | 7,271,974 | Method of self servo write with low density gas |
| 26 | 7,271,970 | Composite magnetic head arranged so the reproducing elements do not overlap a pole of a recording element |
| 27 | 7,271,969 | Apparatus for providing high speed, linear-phase interpolation |
| 28 | 7,271,967 | System and method for determining whether defect in perpendicular recording disk drive is from thermal asperity or defect in magnetically soft underlayer |
| 29 | 7,271,908 | Apparatus and method for measuring alignment accuracy, as well as method and system for manufacturing semiconductor device |
| 30 | 7,271,892 | Method and apparatus for inspecting defects |
| 31 | 7,271,870 | Liquid crystal display device and method of making same |
| 32 | 7,271,869 | Liquid crystal display device |
| 33 | 7,271,783 | Display device |
| 34 | 7,271,771 | Film antenna |
| 35 | 7,271,658 | Electric component for high frequency power amplifier |
| 36 | 7,271,598 | Conductor coil defect identifier |
| 37 | 7,271,557 | AC motor driving apparatus and method of controlling the same |
| 38 | 7,271,500 | Electrical rotating machine control unit and power generation system |
| 39 | 7,271,427 | Liquid crystal display device, illumination device backlight unit |
| 40 | 7,271,421 | Light-emitting diode array |
| 41 | 7,271,404 | Group III-V nitride-based semiconductor substrate and method of making same |
| 42 | 7,271,385 | Inspection method and inspection apparatus using electron beam |
| 43 | 7,270,854 | Method for forming a head having improved spin valve properties |
| 44 | 7,270,758 | Method to improve ability to perform CMP-assisted liftoff for trackwidth definition |
| 45 | 7,270,489 | Optical transceiver |
| 46 | 7,270,270 | Optical scanner control method, optical scanner and laser machining apparatus |
| 47 | 7,270,261 | Print management system |
| 48 | 7,270,118 | Control apparatus of engine |
| 49 | 7,270,012 | Semiconductor device embedded with pressure sensor and manufacturing method thereof |
| 50 | 7,270,000 | Fluid flow sensor and fluid flow measurement device |
| 51 | 7,269,999 | Thermal airflow meter |
