Invention Grant
- Patent Title: Preparation of catalysts
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Application No.: US29861339Application Date: 1939-10-09
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Publication No.: US2258111APublication Date: 1941-10-07
- Inventor: FREDERIK ENGEL WILLEM
- Applicant: SHELL DEV
- Assignee: Shell Development Co
- Current Assignee: Shell Development Co
- Priority: NL2258111X 1938-10-18
- Main IPC: B01J21/00
- IPC: B01J21/00 ; B01J23/26
Information query
