US3225067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxidized diesters of polyoxyethylene isosorbide
Assignee: Zeneca Inc
•
Filing: 1962-06-29
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Granted: 1965-12-21
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Expires: 1982-06-29
Abstract
No abstract record available.
Inventors
- 👤 Maistre John W Le
- 👤 Jr Ernest C Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:11
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
AN EPOXIDIZED DIESTER OF A POLYOXYETHYLENE ISOSORBIDE CONTAINING FROM 2 TO 8 OXYETHYLENE GROUPS PER MOL AND TWO MOLS OF AN ETHYLENICALLY UNSATURATED FATTY ACID WHEREIN AT LEAST 25% OF THE UNSATURATION IS CONVERTED TO EPOXIDE GROUPS.
Claim 2
Dependent Claim
37 words
AN EPOXIDIZED DIESTER OF A POLYOXYETHYLENE ISOSORBIDE CONTAINING FROM 2 TO 8 OXYETHYLENE GROUPS PER MOL AND TWO MOLS OF AN ETHYLENICALLY UNSATURATED FATTY ACID WHEREIN AT LEAST 25% OF THE UNSATURATION IS CONVERTED TO EPOXIDE GROUPS.
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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |