US3074966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylene oxide adducts of substituted tetrahydropyrans
Assignee: Union Carbide Corp
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Filing: 1959-08-10
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Granted: 1963-01-22
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Expires: 1979-08-10
Abstract
No abstract record available.
Inventors
- 👤 Robert K Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:46
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/487; C08G18/4883; C07; C07D; C07D309/00; C07D309/02; C07D309/04; C07D309/06; C07D309/08; C07D309/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
THE ADDUCTS OF ALKYLENE OXIDE AND A 4-HYDROXYTETRAHYDROPYRAN, SAID ALKYLENE OXIDE BEING SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, AND MIXTURE THEREOF, SAID 4-HYDROXY-TETRAHYDROPYRAN HAVING THE FORMULA:
Claim 2
Dependent Claim
30 words
THE ADDUCTS OF ALKYLENE OXIDE AND A 4-HYDROXYTETRAHYDROPYRAN, SAID ALKYLENE OXIDE BEING SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, AND MIXTURE THEREOF, SAID 4-HYDROXY-TETRAHYDROPYRAN HAVING THE FORMULA:
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |