Hitachi Chubu Software, Ltd.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Hitachi Chubu Software, Ltd..The latest application filed is for "method and apparatus for controlling electric source in information processing system".

Company Profile

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Hitachi Chubu Software, Ltd. - Aichi-ken JP
Hitachi Chubu Software, Ltd. - Nagoya JP
Hitachi Chubu Software, Ltd. - Aichi JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Method and apparatus for controlling electric source in information processing system Grant 6,105,138 - Arakawa , et al. August 15, 2	2000-08-15
Control system for communication apparatus Grant 5,781,434 - Tobita , et al. July 14, 1	1998-07-14
Spread sheet calculation method and apparatus by extracting an area to be updated by a calculation formula Grant 5,708,827 - Kaneko , et al. January 13, 1	1998-01-13
Graphic display processing apparatus for improving speed and efficiency of a window system Grant 5,583,985 - Kohiyama , et al. December 10, 1	1996-12-10
Bus snoop method and apparatus for computer system having CPU with cache and main memory unit Grant 5,572,701 - Ishida , et al. November 5, 1	1996-11-05
Electronic document processing system and method of forming digital signature Grant 5,465,299 - Matsumoto , et al. November 7, 1	1995-11-07
Information life cycle processor and information organizing method using it Grant 5,379,423 - Mutoh , et al. January 3, 1	1995-01-03
Graphic display processing apparatus and method for improving the speed and efficiency of a window system Grant 5,353,403 - Kohiyama , et al. October 4, 1	1994-10-04
Limited broadcast system Grant 5,351,294 - Matsumoto , et al. * September 27, 1	1994-09-27
Group cipher communication method and group cipher communication system Grant 5,309,516 - Takaragi , et al. May 3, 1	1994-05-03
Cryptographic method and apparatus Grant 5,222,139 - Takaragi , et al. June 22, 1	1993-06-22
Encipher method and decipher method Grant 5,218,638 - Matsumoto , et al. June 8, 1	1993-06-08
Extended bus controller Grant 4,984,195 - Nakamura , et al. January 8, 1	1991-01-08

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