Patent US2811459A successfully refreshed from Google Patents.
US2811459A
Expired / Lapsed
US
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Polyamide suspensoids forming continuous films
Assignee: General Mills Inc
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Filing: 1953-10-16
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Granted: 1957-10-29
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Expires: 1973-10-16
Abstract
No abstract record available.
Inventors
- 👤 Wittcoff Harold
- 👤 Wesley A Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:20
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/06; C08L77/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A SUSPENSOID IN AN AQUEOUS MEDIUM OF A POLYAMIDE HAVING A POLYACYL GROUP DERIVED FROM POLYMERIC FAT ACIDS, AND A POLYAMINO GROUP DERIVED FROM AN ALIPHATIC POLYAMINE, THE AMINO GROUPS PRIMARILY INVOLVED IN THE POLYAMIDE FORMATION BEING SEPARATED BY AT LEAST 3 ATOMS THE POLYAMIDE HAVING A MELTING POINT WITHIN THE APPROXIMATE RANGE OF 25* TO 95*C. AND HAVING A MOLECULAR WEIGHT WITHIN THE APPROXIMATE RANGE OF 1,000 TO 10,000, SAID POLYAMIDE HAVING AN AMINE NUMBER OF FROM 5 TO 200 AND BEING DISPERSED IN AN AQUEOUS MEDIUM BY MEANS OF A QUANTITY OF ACID EQUIVALENT TO AN AMINE NUMBER OF FROM 5 TO 4 TO PRODUCE A STABLE SUSPENSOID, SAID SUSPENSOID BEING CAPABLE OF FORMING CONTINUOUS TACKY FILMS.
Claim 2
Dependent Claim
119 words
A SUSPENSOID IN AN AQUEOUS MEDIUM OF A POLYAMIDE HAVING A POLYACYL GROUP DERIVED FROM POLYMERIC FAT ACIDS, AND A POLYAMINO GROUP DERIVED FROM AN ALIPHATIC POLYAMINE, THE AMINO GROUPS PRIMARILY INVOLVED IN THE POLYAMIDE FORMATION BEING SEPARATED BY AT LEAST 3 ATOMS THE POLYAMIDE HAVING A MELTING POINT WITHIN THE APPROXIMATE RANGE OF 25* TO 95*C. AND HAVING A MOLECULAR WEIGHT WITHIN THE APPROXIMATE RANGE OF 1,000 TO 10,000, SAID POLYAMIDE HAVING AN AMINE NUMBER OF FROM 5 TO 200 AND BEING DISPERSED IN AN AQUEOUS MEDIUM BY MEANS OF A QUANTITY OF ACID EQUIVALENT TO AN AMINE NUMBER OF FROM 5 TO 4 TO PRODUCE A STABLE SUSPENSOID, SAID SUSPENSOID BEING CAPABLE OF FORMING CONTINUOUS TACKY FILMS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |