US3107253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy acetals
Assignee: Shell USA Inc
•
Filing: 1961-10-12
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Granted: 1963-10-15
•
Expires: 1981-10-12
Abstract
No abstract record available.
Inventors
- 👤 George B Payne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:19
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/22; C08G59/02; C08G59/20; C08G59/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
ACYLATED EPOXY ACETALS OF THE FORMULA:
Claim 2
Dependent Claim
6 words
ACYLATED EPOXY ACETALS OF 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) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |