US3285968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for continuously producing calcium alkoxy alcoholates
Assignee: ConocoPhillips Co
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Filing: 1962-11-23
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Granted: 1966-11-15
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Expires: 1982-11-23
Abstract
No abstract record available.
Inventors
- 👤 William R Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:15
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/13; B; B01; B01J; B01J19/00; B01J19/18; B01J8/00; B01J8/18; B01J8/20; C07C43/10; C07C43/11; C07F; C07F3/00; C07F3/003; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00087; B01J2219/00094; B01J2219/00159; B01J2219/00164; B01J2219/00166; B01J2219/00182; B01J2219/18; B01J2219/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
IN THE METHOD OF PREPARING CALCIUM ALKOXY ALCOHOLATES BY REACTING CALCIUM CARBIDE WITH A GLYCOL ETHER SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE STRUCTURAL FORMULA ROCH2CH2OH WHERE R IS AN ALKYL GROUP CONTAINING FROM 1 TO 6 CARBON ATOMS, AND COMPOUNDS HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
47 words
IN THE METHOD OF PREPARING CALCIUM ALKOXY ALCOHOLATES BY REACTING CALCIUM CARBIDE WITH A GLYCOL ETHER SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE STRUCTURAL FORMULA ROCH2CH2OH WHERE R IS AN ALKYL GROUP CONTAINING FROM 1 TO 6 CARBON ATOMS, AND COMPOUNDS HAVING THE STRUCTURAL FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |