US2503699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyallyl acetoxyacetate
Assignee: Shell Development Co
•
Filing: 1946-05-27
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Granted: 1950-04-11
•
Expires: 1966-05-27
Abstract
No abstract record available.
Inventors
- 👤 David E Adelson
- 👤 Dannenberg Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:24
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A PROCESS FOR THE PRODUCTION OF POLYALLYL ACETOXYACETATE WHICH COMPRISES HEATING ALLYL ACETOYACETATE IN LIQUID PHSE AT A TEMPERATURE BETWEEN ABOUT 50*C. AND 200* C. IN THE PRESENCE OF A PEROXIDE POLYMERIZATION CATALYST.
Claim 2
Dependent Claim
33 words
A PROCESS FOR THE PRODUCTION OF POLYALLYL ACETOXYACETATE WHICH COMPRISES HEATING ALLYL ACETOYACETATE IN LIQUID PHSE AT A TEMPERATURE BETWEEN ABOUT 50*C. AND 200* C. IN THE PRESENCE OF A PEROXIDE POLYMERIZATION CATALYST.
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) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |