Patent US2284467A successfully refreshed from Google Patents.
US3409701A
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US
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Catalyst and method for dehydrogenating and cracking alkanes and olefins
Assignee: Dow Chemical Co
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Filing: 1966-12-27
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Granted: 1968-11-05
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Expires: 1986-12-27
Abstract
No abstract record available.
Inventors
- 👤 Charles R Noddings
- 👤 Andrew J Dietzler
- 👤 Ronald G Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:49
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/188; C07C4/00; C07C4/02; C07C4/06; C07C5/327; C07C5/333; C10; C10G; C10G11/00; C10G11/02; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2442320A
Cited
US2542813A
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US2478464A
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DE1056104B
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US3092674A
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US3205181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |