US3516959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid polymer compositions having flame retardant and drip resistant properties and additive compositions for imparting said properties thereto
Assignee: Berk Ltd
•
Filing: 1965-12-14
•
Granted: 1970-06-23
•
Expires: 1985-12-14
Abstract
No abstract record available.
Inventors
- 👤 Donald Moore Jonas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:11
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/346; C08K5/00; C08K5/0008; C08K5/0066
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA589819A
Cited
US2531427A
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US2531396A
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US2743188A
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US2676892A
Cited
US2874139A
Cited
US3014001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |