US3255210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for aerating cyclic acetals
Assignee: EIDP Inc
•
Filing: 1961-03-16
•
Granted: 1966-06-07
•
Expires: 1981-03-16
Abstract
No abstract record available.
Inventors
- 👤 Carol K Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:18
CPC Classifications
C; C08; C08F; C08F24/00; C09; C09D; C09D137/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
THE PROCESS WHICH CONSISTS ESSENTIALLY OF OXYGENATING LIQUID CYCLIC ACETAL BY CONTACTING SAID CYCLIC ACETAL THROUGHOUT ITS MASS WITH GASEOUS OXYGEN, SAID CYCLIC ACETAL CONTAINING A PLURALITY OF 1,3-CYCLIC ACETAL RADICALS WHICH HAVE IN THE 2-POSITION A SUBSTITUENT OF THE CLASS CONSISTING OF VINYL AND ISOPROPENYL RADICALS AND WHICH ARE CONNECTED TO EACH OTHER THROUGH AN INTERPOSED POLYVALENT RADICAL.
Claim 2
Dependent Claim
59 words
THE PROCESS WHICH CONSISTS ESSENTIALLY OF OXYGENATING LIQUID CYCLIC ACETAL BY CONTACTING SAID CYCLIC ACETAL THROUGHOUT ITS MASS WITH GASEOUS OXYGEN, SAID CYCLIC ACETAL CONTAINING A PLURALITY OF 1,3-CYCLIC ACETAL RADICALS WHICH HAVE IN THE 2-POSITION A SUBSTITUENT OF THE CLASS CONSISTING OF VINYL AND ISOPROPENYL RADICALS AND WHICH ARE CONNECTED TO EACH OTHER THROUGH AN INTERPOSED POLYVALENT RADICAL.
References Cited (Backward Citations)
US2987524A
Cited
US2609304A
Cited
US2985536A
Cited
US2895962A
Cited
US3010923A
Cited
US3010945A
Cited
US3010918A
Cited
US3014924A
Cited
US3054803A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |