41 US patents granted on 26 May 2009 and assigned to Hitachi
| 1 | 7,540,019 | Processing device capable of implementing flexible access control |
| 2 | 7,539,820 | Disk device and control method for cache |
| 3 | 7,539,817 | Storage system and capacity allocation method therefor |
| 4 | 7,539,788 | Data processing system for keeping isolation between logical partitions |
| 5 | 7,539,703 | Setup method for disaster recovery system |
| 6 | 7,539,695 | Pointer compression/expansion method, a program to execute the method and a computer system using the program |
| 7 | 7,539,422 | Quantum optical transmission device |
| 8 | 7,539,367 | Optical system connection structure, optical component, and optical communication module |
| 9 | 7,538,989 | Tunnel MR head formed with partial milled stack |
| 10 | 7,538,988 | Method and apparatus having improved magnetic read head sensors |
| 11 | 7,538,977 | Method and apparatus for providing diamagnetic flux focusing in a storage device |
| 12 | 7,538,976 | Trailing shield design for reducing wide area track erasure (water) in a perpendicular recording system |
| 13 | 7,538,973 | Method and apparatus for providing a fluid damping structure with fuel cell for a hard disk drive and vibration sensitive electronic devices |
| 14 | 7,538,964 | Magnetic disk drive |
| 15 | 7,538,963 | System, method, and apparatus for monitoring stray magnetic fields and protecting disk drives therefrom |
| 16 | 7,538,961 | Using inductance to measure writer spacing in perpendicular magnetic recording |
| 17 | 7,538,853 | Exposure process and apparatus using glass photomasks |
| 18 | 7,538,847 | Display device and manufacturing method thereof |
| 19 | 7,538,845 | Liquid crystal display device having particular electrodes in transmission region and in reflection region |
| 20 | 7,538,833 | Liquid crystal display device |
| 21 | 7,538,829 | Active matrix type liquid crystal display and liquid crystal material |
| 22 | 7,538,649 | Superconducting electromagnet |
| 23 | 7,538,464 | Seal for generator |
| 24 | 7,538,321 | Method of identifying substances using mass spectrometry |
| 25 | 7,538,166 | Epoxy compounds and cured epoxy resins obtained by curing the compounds |
| 26 | 7,538,150 | Dihydrobenzoxazine ring-containing resin, phenolic-triazine-aldehyde condensate and epoxy resin |
| 27 | 7,538,035 | Lapping of gold pads in a liquid medium for work hardening the surface of the pads |
| 28 | 7,537,967 | Mold cleaning sheet and manufacturing method of a semiconductor device using the same |
| 29 | 7,537,858 | Catalyst structure and fuel cell having the same |
| 30 | 7,537,822 | Hard-coated member |
| 31 | 7,537,698 | Process and equipment for treating ammonium containing liquid |
| 32 | 7,537,694 | Method and device for multidimensional liquid chromatography |
| 33 | 7,537,372 | Back light device and liquid crystal display device |
| 34 | 7,537,177 | Level wound coil, method of manufacturing same, and package for same |
| 35 | 7,537,074 | Construction machine |
| 36 | 7,536,778 | Method of fabrication for slider with underpass leads |
| 37 | 7,536,777 | Use of metal capped seed layers for the fabrication of perpendicular thin film heads |
| 38 | 7,536,776 | Fabrication method for thin film magnetic heads |
| 39 | 7,536,775 | Method for sample preparation for exposing a main pole of a recording head |
| 40 | 7,536,774 | Method and apparatus for integrating a stair notch and a gap bump at a pole tip in a write head |
| 41 | 7,536,773 | Method of configuring a sensor for a hard disk drive |
