Patent US2831838A successfully refreshed from Google Patents.
US2831838A
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US
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Novel polymerizable compounds
Assignee: PPG Industries Inc
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Filing: 1956-03-21
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Granted: 1958-04-22
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Expires: 1976-03-21
Abstract
No abstract record available.
Inventors
- 👤 Fekete Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:38
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/675; C08G18/677; C08G18/6785; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/54; C08F; C08F30/00; C08F30/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A COMPOSITION OF MATTER COMPRISING A COMPOUND OF THE STRUCTURE
Claim 2
Dependent Claim
10 words
A COMPOSITION OF MATTER COMPRISING A COMPOUND OF THE STRUCTURE
References Cited (Backward Citations)
US2668096A
Cited
US2743299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |