Company Filing History:

8 out of 42,485

Hitachi, Ltd.

patents

1 out of 162

Hitachi Engineering Co., Ltd.

patents

where one patent can have more than one assignee

Years Active: 1981-2002

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6405537 - Single shaft combined cycle plant and operating thereof (2002-06-18),

2. 6223518 - Single shaft combined cycle plant and method for operating the same (2001-05-01),

3. 6220014 - Single shaft combined cycle plant and operating method thereof (2001-04-24),

4. 4858562 - Reheat type waste heat recovery boiler and power generation plant (1989-08-22),

5. 4793141 - Gland sealing steam supply system for steam turbines (1988-12-27),

6. 4744723 - Method for starting thermal power plant (1988-05-17),

7. 4576007 - Method and apparatus for controlling an operation of plant (1986-03-18),

8. 4282708 - Method for the shutdown and restarting of combined power plant (1981-08-11),

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Company Filing History:

Years Active: 1981-2002