US3483273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft copolymers of unsaturated hydrocarbon interpolymers
Assignee: PPG Industries Inc
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Filing: 1966-03-31
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Granted: 1969-12-09
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Expires: 1986-03-31
Abstract
No abstract record available.
Inventors
- 👤 Paul J Prucnal
- 👤 Marco Wismer
- 👤 Roger M Christenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:47
CPC Classifications
C; C08; C08F; C08F255/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-08 | 1973-06-09 | 1973-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-08 | 1977-06-09 | 1977-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-08 | 1981-06-09 | 1981-12-09 | $7700.00 | Window Closed / Lapsed |