US3536781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charge-transfer polymer blends
Assignee: BP Corp North America Inc
•
Filing: 1968-02-01
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Granted: 1970-10-27
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Expires: 1988-02-01
Abstract
No abstract record available.
Inventors
- 👤 Robert J Cotter
- 👤 Theodore Sulzberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:19
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/6856; C08G64/00; C08G64/16; C08G64/1608; C08G64/1625; C08G64/1641; C08L69/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3423483A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |