US3639313A
Expired / Lapsed
US
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Modified polyamide resins
Assignee: Sun Chemical Corp
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Filing: 1969-11-26
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Granted: 1972-02-01
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Expires: 1989-11-26
Abstract
Abstract A MODIFIED POLYAMIDE RESIN PARTICULARLY SUITABLE FOR USE IN PRINTING INKS AND LAMINATING INKS COMPRISES A POLYAMIDE RESIN WHICH IS THE REACTION PRODUCT OF AT LEAST ONE POLYMERIC FATTY ACID AND AT LEAST ONE DIAMINE OR POLYAMINE AND UP TO ABOUT 40 WEIGHT PERCENT OF A CYCLIC LACTAM, SUCH AS E-CAPROLACTAM.
Inventors
- 👤 Arnold H Gruben
- 👤 Daniel J Carlick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:33
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/102; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |