Patent US2497433A successfully refreshed from Google Patents.
US2497433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl esters of glycol polycarboxylic acid esters
Assignee: Monsanto Chemicals Ltd
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Filing: 1947-06-11
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Granted: 1950-02-14
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Expires: 1967-06-11
Abstract
No abstract record available.
Inventors
- 👤 Edward S Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:34
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/34; C07C69/40; C07C69/52; C07C69/593; C07C69/60; C10; C10M; C10M2207/00; C10M2207/28; C10M2207/30; C10M2207/304; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
AN ESTER OF THE STRUCTURE
Claim 2
Dependent Claim
5 words
AN ESTER OF THE STRUCTURE
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) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |