Patent US2496582A successfully refreshed from Google Patents.
US2496582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charles r enyeart
Assignee: —
•
Filing: —
•
Granted: 1950-02-07
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Expires: 1967-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:32
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/007; C07; C07C; C07C41/00; C07C41/48; C07C41/50; C07C41/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
THE PROCESS OF TREATING A WATER-SOLUBLE POLYGLYCOL ETHER OF AN ALKYL PHENOL, SAID POLYGLYCOL ETHER HAVING THE FORMULA
Claim 2
Dependent Claim
18 words
THE PROCESS OF TREATING A WATER-SOLUBLE POLYGLYCOL ETHER OF AN ALKYL PHENOL, SAID POLYGLYCOL ETHER HAVING 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) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |