US2839549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bodied resinous polyamides
Assignee: General Mills Inc
•
Filing: 1953-11-18
•
Granted: 1958-06-17
•
Expires: 1973-11-18
Abstract
No abstract record available.
Inventors
- 👤 Gerald G Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:00
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A POLYAMIDE RESIN CONTAINING THE POLYACYL GROUP OF A POLYMERIC FAT ACID AND THE POLYAMINO GROUP OF A POLYALKYLENE POLYAMINE, THE POLYAMIDE CONTAINING FROM 1.3 TO 3.0 AMINO GROUPS PER CARBOXYL GROUP HAVING BEEN SUBJECTED TO A BODYING TREATMENT AT 200-300*C. FOR A PERIOD OF FROM 6-30 HOURS TO EFFECT AN INCREASE IN VISCOSITY, SAID POLYAMIDE RESIN HAVING AN ACID NUMBER OF NOT GREATER THAN 10 BEFORE SAID BODYING TREATMENT.
Claim 2
Dependent Claim
70 words
A POLYAMIDE RESIN CONTAINING THE POLYACYL GROUP OF A POLYMERIC FAT ACID AND THE POLYAMINO GROUP OF A POLYALKYLENE POLYAMINE, THE POLYAMIDE CONTAINING FROM 1.3 TO 3.0 AMINO GROUPS PER CARBOXYL GROUP HAVING BEEN SUBJECTED TO A BODYING TREATMENT AT 200-300*C. FOR A PERIOD OF FROM 6-30 HOURS TO EFFECT AN INCREASE IN VISCOSITY, SAID POLYAMIDE RESIN HAVING AN ACID NUMBER OF NOT GREATER THAN 10 BEFORE SAID BODYING TREATMENT.
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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |