US3247168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyoxamides
Assignee: EIDP Inc
•
Filing: 1962-11-13
•
Granted: 1966-04-19
•
Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Stamatoff Gelu Stoeff
- 👤 Norman K J Symons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:16
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A LINEAR, SYNTHETIC POLYCARBONAMIDE WHEREIN THE RECURRING CARBONAMIDE UNITS ARE AN INTEGRAL PART OF THE POLYMER CHAIN AND CHARACTERIZED BY A TEMPERATURE RANGE OF WORKABILITY IN THE MELT OF AT LEAST ABOUT 15*C., THE SAID POLYCARBONAMIDE CONSISTING ESSENTIALLY OF AT LEAST 90% BY WEIGHT BASED ON THE SAID POLYCARBONZMIDE OF REPEATING UNITS OF THE FORMULA
Claim 2
Dependent Claim
55 words
A LINEAR, SYNTHETIC POLYCARBONAMIDE WHEREIN THE RECURRING CARBONAMIDE UNITS ARE AN INTEGRAL PART OF THE POLYMER CHAIN AND CHARACTERIZED BY A TEMPERATURE RANGE OF WORKABILITY IN THE MELT OF AT LEAST ABOUT 15*C., THE SAID POLYCARBONAMIDE CONSISTING ESSENTIALLY OF AT LEAST 90% BY WEIGHT BASED ON THE SAID POLYCARBONZMIDE OF REPEATING UNITS OF THE FORMULA
References Cited (Backward Citations)
US2190770A
Cited
US2163636A
Cited
US2252554A
Cited
US2558031A
Cited
US2977339A
Cited
US2977340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |