| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 10.99 |
| PATENT ASSIGNEE | Shell Oil |
| PATENT CLAIMS |
- Fe (III) oxide predoped by heating to 600-1600C in presen ce of Be (0.5-6%) - Cooling - Mixed with promoters - Formed into shaped form - Calcination |
| PATENT PHOTOCOPY | Available on request |
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