US2503873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions of polyvinyl acetals and polymeric 4-vinylcyclohexene dioxide
Assignee: PPG Architectural Coatings Canada Inc
•
Filing: 1948-05-19
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Granted: 1950-04-11
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Expires: 1968-05-19
Abstract
No abstract record available.
Inventors
- 👤 Hornibrook Walter John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:16
CPC Classifications
C; C08; C08F; C08F224/00; C08F261/00; C08F261/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A PROCESS FOR PREPARING A POLYMERIC COMPOSITION WHICH COMPRISES DISSOLVING A POLYVINYL ACETAL IN 4-VINYLCYCLOHEXENE DIOXIDE AND POLYMERIZING THE 4-VINYLCYCLOHEXENE DIOXIDE IN THE PRESENCE OF A CATALYST.
Claim 2
Dependent Claim
27 words
A PROCESS FOR PREPARING A POLYMERIC COMPOSITION WHICH COMPRISES DISSOLVING A POLYVINYL ACETAL IN 4-VINYLCYCLOHEXENE DIOXIDE AND POLYMERIZING THE 4-VINYLCYCLOHEXENE DIOXIDE IN THE PRESENCE OF A CATALYST.
References Cited (Backward Citations)
US2450234A
Cited
US2460195A
Cited
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 |