US2502433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetals of oxy and polyoxy
Assignee: —
•
Filing: —
•
Granted: 1950-04-04
•
Expires: 1967-04-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:42
CPC Classifications
C; C07; C07C; C07C41/00; C07C41/48; C07C41/50; C07C43/00; C07C43/30; C07C43/315; C07C41/01; C07C41/18; C07C43/303
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
39 words
THE METHOD OF PRODUCING OXY AND POLYOXY ACETALS OF A,W-DICARBONYL COMPOUNDS, WHICH COMPRISES REACTING A VINYL ETHER WITH AN ACETAL OF A 1,3-DICARBONYL COMPOUND AT A TEMPERATURE OF FROM 0-100*C. IN THE PRESENCE OF AN ACID REACTING CONDENSING AGENT.
Claim 2
Independent Claim
39 words
THE METHOD OF PRODUCING OXY AND POLYOXY ACETALS OF A,W-DICARBONYL COMPOUNDS, WHICH COMPRISES REACTING A VINYL ETHER WITH AN ACETAL OF A 1,3-DICARBONYL COMPOUND AT A TEMPERATURE OF FROM 0-100*C. IN THE PRESENCE OF AN ACID REACTING CONDENSING AGENT.
Claim 3
Dependent Claim
11 words
ACETALS OF OXY AND POLYOXY A,W-ALDEHYDES, SAID ACETALS HAVING THE FORMULA:
Claim 4
Dependent Claim
11 words
ACETALS OF OXY AND POLYOXY A,W-ALDEHYDES, SAID ACETALS HAVING THE FORMULA:
References Cited (Backward Citations)
US2425042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |