Company Filing History:

8 out of 42,485

Hitachi, Ltd.

patents

1 out of 50

Japanese National Railways

patents

where one patent can have more than one assignee

Years Active: 1979-1992

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5148977 - Control system for air-conductioner (1992-09-22),

2. 4502833 - Monitoring system for screw compressor (1985-03-05),

3. 4498307 - Absorption cold and warm water system utilizing solar heat (1985-02-12),

4. 4493192 - Operation device for absorption cold and warm water system utilizing (1985-01-15),

5. 4454726 - Control device of absorption type cold and warm water system (1984-06-19),

6. 4429541 - Apparatus for controlling operation of refrigerator (1984-02-07),

7. 4288198 - Method of controlling multistage centrifugal compressor equipment (1981-09-08),

8. 4139107 - Spreader positioning apparatus for automatically grasping a handling (1979-02-13),

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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

Yozo Hibino

Location History:

Company Filing History:

Years Active: 1979-1992