US2695908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide composition
Assignee: General Mills Inc
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Filing: 1951-04-09
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Granted: 1954-11-30
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Expires: 1971-04-09
Abstract
No abstract record available.
Inventors
- 👤 Wittcoff Harold
- 👤 Malcolm M Renfrew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:29
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/06; C08L77/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
POLYAMIDE COMPOSITION COMPRISING A POLYAMIDE CONTAINING A POLYACYL GROUP DERIVED FROM POLYMERIC FATTY ACIDS, AND A POLYAMINO GROUP DERIVED FROM ETHYLENE DIAMINE, THE POLYAMIDE HAVING A MOLECULAR WEIGHT WITHIN THE APPROXIMATE RANGE OF 3,000 AND 10,000 SAID COMPOSITION CONTAINING AND BEING STABILIZED BY FROM .1% TO 5% OF A PHENOL-FORMALDEHYDE RESIN BASED ON THE WEIGHT OF THE POLYAMIDE, THE PHENOL-FORMALDEHYDE RESIN BEING DERIVED FROM A HYDROCARBON SUBSTITUTED PENOL.
Claim 2
Dependent Claim
68 words
POLYAMIDE COMPOSITION COMPRISING A POLYAMIDE CONTAINING A POLYACYL GROUP DERIVED FROM POLYMERIC FATTY ACIDS, AND A POLYAMINO GROUP DERIVED FROM ETHYLENE DIAMINE, THE POLYAMIDE HAVING A MOLECULAR WEIGHT WITHIN THE APPROXIMATE RANGE OF 3,000 AND 10,000 SAID COMPOSITION CONTAINING AND BEING STABILIZED BY FROM .1% TO 5% OF A PHENOL-FORMALDEHYDE RESIN BASED ON THE WEIGHT OF THE POLYAMIDE, THE PHENOL-FORMALDEHYDE RESIN BEING DERIVED FROM A HYDROCARBON SUBSTITUTED PENOL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |