20 US patents granted on 17 January 2006 and assigned to Hitachi
| 1 | 6,988,176 | Method and apparatus for data duplexing in storage unit system |
| 2 | 6,988,151 | Storage control device with a plurality of channel control sections |
| 3 | 6,988,087 | Service method of a rental storage and a rental storage system |
| 4 | 6,987,984 | High-frequency switch module |
| 5 | 6,987,978 | Wireless communication restriction device, repeater and base station |
| 6 | 6,987,924 | Recorder/reproducer |
| 7 | 6,987,899 | Optical switching apparatus and optical switching method |
| 8 | 6,987,874 | Method and apparatus for managing surface image of thin film device, and method and apparatus for manufacturing thin film device using the same |
| 9 | 6,987,733 | ATM communication apparatus and ATM cell forwarding control method |
| 10 | 6,987,668 | Liquid cooling system and personal computer using thereof |
| 11 | 6,987,646 | Method of making magnetic head having narrow pole tip and fine pitch coil |
| 12 | 6,987,635 | Magnetic disk drive which accesses host RAM |
| 13 | 6,987,546 | Projection type image display apparatus |
| 14 | 6,987,265 | Method and an apparatus of an inspection system using an electron beam |
| 15 | 6,987,069 | Fabrication process of a semiconductor integrated circuit device |
| 16 | 6,987,043 | Method of manufacturing semiconductor device having a plurality of trench-type data storage capacitors |
| 17 | 6,986,555 | Vehicle brake control system |
| 18 | 6,986,502 | Throttle body |
| 19 | 6,986,256 | Gas turbine having a cooling air system and a spray air system |
| 20 | 6,986,195 | Electronic component mounting apparatus |
