Company Filing History:

6 out of 59

Chiyoda Chemical Engineering Construction Co., Ltd.

patents

1 out of 3

Chiyoda Chemical Engineering & Construction

Years Active: 1978-1989

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4812167 - Process for recovering metallic gallium from gallium compound-containing (1989-03-14),

2. 4525267 - Process for hydrocracking hydrocarbons with hydrotreatment-regeneration (1985-06-25),

3. 4486295 - Processing heavy hydrocarbon oils (1984-12-04),

4. 4340466 - Process for hydrotreating heavy oils containing metals (1982-07-20),

5. 4196102 - Catalysts for demetallization treatment of _hydrocarbons supported on (1980-04-01),

6. 4152250 - Demetallation of hydrocarbons with catalysts supported on sepiolite (1979-05-01),

7. 4120780 - Catalysts for hydrodemetallization of hydrocarbons containing metallic (1978-10-17),

8. 4075125 - Catalysts for hydrodemetallization of hydrocarbons containing metallic (1978-02-21),

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Location History:

Company Filing History:

Years Active: 1978-1989