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US3449276A
Expired / Lapsed
US
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Triple accelerator system for promoting the cure of free-radical catalyzed unsaturated polyester resins
Assignee: PPG Industries Inc
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Filing: 1968-03-26
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Granted: 1969-06-10
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Expires: 1988-03-26
Abstract
No abstract record available.
Inventors
- 👤 Ronald R Rabenold
- 👤 Earl E Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:13
CPC Classifications
C; C08; C08F; C08F283/00; C08F283/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2642410A
Cited
US2646416A
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US2931784A
Cited
US3091936A
Cited
US3028360A
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GB967921A
Cited
US3188363A
Cited
US3360589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |