Patent US2030412A successfully refreshed from Google Patents.
Patent US3448066A successfully refreshed from Google Patents.
US3448066A
Expired / Lapsed
US
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Air-drying unsaturated polyester resins prepared from a polyol and an adduct of cyclopentadiene and a dicarboxylic acid
Assignee: PPG Industries Inc
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Filing: 1966-11-17
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Granted: 1969-06-03
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Expires: 1986-11-17
Abstract
No abstract record available.
Inventors
- 👤 Earl E Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:23
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08G63/54; C08G63/553; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2452992A
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US2397240A
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US2385776A
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US2404836A
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US2387895A
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US3347806A
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US2671070A
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US3124550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |