Patent EP0059434A2 successfully refreshed from Google Patents.
US2932670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of glycerol 1, 3-dialkyl ethers and their preparation
Assignee: Monsanto Chemicals Ltd
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Filing: 1957-09-16
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Granted: 1960-04-12
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Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 Edward S Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:45
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
CHEMICAL COMPOUNDS HAVING THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
6 words
CHEMICAL COMPOUNDS HAVING THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
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US2671116A
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US2679521A
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US1970578A
Cited
US2617830A
Cited
US2677700A
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US2674619A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-12 | 1963-10-12 | 1964-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-12 | 1967-10-12 | 1968-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-12 | 1971-10-12 | 1972-04-12 | $7700.00 | Window Closed / Lapsed |