US3709950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of halohydrocarbons
Assignee: Ethyl Corp
•
Filing: 1969-07-28
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Granted: 1973-01-09
•
Expires: 1989-07-28
Abstract
Abstract A MICROSPHERICAL ALUMINA CATALYST CARRIER FOR USE IN AN OXYHALOGENATION PROCESS.
Inventors
- 👤 R Baker
- 👤 Carthy J Mc
- 👤 A Wikman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:56
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/06; C; C07; C07C; C07C17/00; C07C17/093; C07C17/15; C07C17/152; C07C17/156; B01J35/00; B01J35/50; B01J35/51
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |