Patent US3489716A successfully refreshed from Google Patents.
US3489716A
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US
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Aromatic polycarbonate resins stabilized with cycloaliphatic epoxy compounds
Assignee: General Electric Co
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Filing: 1968-01-10
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Granted: 1970-01-13
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Expires: 1988-01-10
Abstract
No abstract record available.
Inventors
- 👤 Thornton R Calkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:57
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3113036A
Cited
US3148167A
Cited
US3121068A
Cited
US3189570A
Cited
US3210318A
Cited
US3186961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |