US3009964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparation of calcium methylate
Assignee: Ekco Products Co
•
Filing: 1958-10-31
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Granted: 1961-11-21
•
Expires: 1978-10-31
Abstract
No abstract record available.
Inventors
- 👤 Richard W Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:17
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/28; C07C31/30; C07C29/00; C07C29/68; C07C29/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
THE METHOD OF PRODUCING CALCIUM METHYLATE BY REACTING CALCIUM CARBIDE WITH METHANOL WHILE SEPARATELY HEATING SAID METHANOL AND SAID METHANOL IS UNDERGOING CONDENSATION FROM A VAPOR PHASE.
Claim 2
Independent Claim
27 words
THE METHOD OF PRODUCING CALCIUM METHYLATE BY REACTING CALCIUM CARBIDE WITH METHANOL WHILE SEPARATELY HEATING SAID METHANOL AND SAID METHANOL IS UNDERGOING CONDENSATION FROM A VAPOR PHASE.
References Cited (Backward Citations)
US2451945A
Cited
US2715057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |