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US2666774A
Expired / Lapsed
US
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Polyhydroxy-ether addition compounds with metal salts
Assignee: Union Oil Company of California
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Filing: 1952-04-25
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Granted: 1954-01-19
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Expires: 1972-04-25
Abstract
No abstract record available.
Inventors
- 👤 Grenall Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:48
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/13
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
33 words
A SOLID, NON-HYGROSCOPIC ADDITION COMPOUND OF (1) A LOWER POLYMER OF A LOWER ALKYLENE GLYCOL AND (2) A HYDROSCOPIC SALT OF A METAL SELECTED FROM GROUPS II-A AND II-B OF THE PERIODIC TABLE.
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) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |