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Inventor

Katsuzo Shiraishi

Inventor
Inba-gun, JP

Overview

2→
Patents
1984–1990
Patent span
Performing operations
Primary field (CPC B)

Patents· 2 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B01Jprimary
B01JChemical or physical processes, e.g. catalysis or colloid chemistry67%
C10GCracking hydrocarbon oils33%
PatentTitleYear
4,950,633'Catalyst for hydrotreating coal liquefaction and circulation solvent'19904,444,899'Process for the production of low density activated alumina formed product'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984Patents assigned to SUMITOMO ALUMINUM SMELTING COM (1)· patent assignee history
1984Based in Niihama, JP· patent location history
1990Patents assigned to SUMITOMO METAL MINING CO (1)· patent assignee history
1990Based in Inba-gun, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SUMITOMO ALUMINUM SMELTING COM11984
SUMITOMO METAL MINING CO11990
Locations
LocationPatentsSpan
Inba-gun, JP11990
Niihama, JP11984