US3419634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organopolysiloxane polycarbonate block copolymers
Assignee: General Electric Co
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Filing: 1966-01-03
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Granted: 1968-12-31
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Howard A Vaughn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:27
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G77/448; C08G64/00; C08G64/18; C08G64/186
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) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |