US2617813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamides
Assignee: Armour and Co
•
Filing: 1944-05-13
•
Granted: 1952-11-11
•
Expires: 1964-05-13
Abstract
No abstract record available.
Inventors
- 👤 Anderson W Ralston
- 👤 Wal Robert J Vander
- 👤 Harwood James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:01
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
THE CONDENSATION PRODUCT OF A POLYMERIZED UNSATURATED CARBOXYLIC ACID CONTAINING A POLYENIC CARBON CHAIN OF 18 CARBONS AND A POLYMERIZED UNSATURATED AMINE CONTAINING A POLYENIC ALIPHATIC RADICAL HAVING 18 CARBON ATOMS.
Claim 2
Dependent Claim
31 words
THE CONDENSATION PRODUCT OF A POLYMERIZED UNSATURATED CARBOXYLIC ACID CONTAINING A POLYENIC CARBON CHAIN OF 18 CARBONS AND A POLYMERIZED UNSATURATED AMINE CONTAINING A POLYENIC ALIPHATIC RADICAL HAVING 18 CARBON ATOMS.
References Cited (Backward Citations)
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US2247353A
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US2246842A
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Cited
US2435478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |