Patent US3057807A successfully refreshed from Google Patents.
US3057807A
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Process for preparing boria promoted catalyst
Assignee: MW Kellogg Co
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Filing: 1956-08-31
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Granted: 1962-10-09
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Expires: 1976-08-31
Abstract
No abstract record available.
Inventors
- 👤 Robert P Cox
- 👤 Douglas H Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:51
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/44; C10G45/46; C10G45/52; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; B01J21/00; B01J21/02; B01J27/00; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |