US2618663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of polyether alcohols
Assignee: GAF Chemicals Corp
•
Filing: 1951-01-17
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Granted: 1952-11-18
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Expires: 1971-01-17
Abstract
No abstract record available.
Inventors
- 👤 Glickman Samuel Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:23
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/13; C07C43/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A METHOD OF PRODUCING ETHER ALCOHOLS OF THE FORMULA
Claim 2
Independent Claim
9 words
A METHOD OF PRODUCING ETHER ALCOHOLS OF THE FORMULA
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) | 1955-11-18 | 1956-05-19 | 1956-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-18 | 1960-05-19 | 1960-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-18 | 1964-05-19 | 1964-11-18 | $7700.00 | Window Closed / Lapsed |