Company Filing History:

3 out of 42,485

Hitachi, Ltd.

patents

Years Active: 1987-2004

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3 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 6820333 - Method of converting storage pumps into reversible pump-turbines (2004-11-23),

2. 5938403 - Runner, water wheel and method of manufacturing the same (1999-08-17),

3. 4708594 - Method of starting a variable-speed pump turbine or a variable speed pump (1987-11-24),

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Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.

For the Inventor, By the Inventor

Kazuo Niikura

Location History:

Company Filing History:

Years Active: 1987-2004