US3413277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization
Assignee: PPG Industries Inc
•
Filing: 1963-08-23
•
Granted: 1968-11-26
•
Expires: 1983-08-23
Abstract
No abstract record available.
Inventors
- 👤 John C Crano
- 👤 Elizabeth K Fleming
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:32
CPC Classifications
C; C08; C08F; C08F36/00; C08F236/00; C08F236/02; C08F236/04; C08F4/00; C08F4/28; C08F4/32; Y; Y10; Y10S; Y10S526/00; Y10S526/915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2716641A
Cited
US3150169A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-26 | 1972-05-27 | 1972-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-26 | 1976-05-27 | 1976-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-26 | 1980-05-27 | 1980-11-26 | $7700.00 | Window Closed / Lapsed |