US3733296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polycarbonates
Assignee: Baychem Corp
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Filing: 1971-07-22
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Granted: 1973-05-15
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Expires: 1991-07-22
Abstract
Abstract A HALOGENATED POLYCARBONATE POLYMER COMPOSITION CONTAINING AN EFFECTIVE AMOUNT OF A METAL CARBONATE SELECTED FROM THE GROUP CONSISTING OF BARIUM CARBONATE, STRONITUM CARBONATE, AND CALCIUM CARBONATE, OR AN EFFECTIVE AMOUNT OF A COMBINATION OF THE METAL CARBONATES AND AN ORGANIC PHOSPHITE TO STABILIZE THE POLYMER.
Inventors
- 👤 T Cleveland
- 👤 J Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:13
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08K5/524
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |