Patent US2192621A successfully refreshed from Google Patents.
US3012994A
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Polyamides derived from cyclohexanebis
Assignee: Eastman Kodak Co
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Filing: 1956-10-24
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Granted: 1961-12-12
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Expires: 1976-10-24
Abstract
No abstract record available.
Inventors
- 👤 Bell Alan
- 👤 James G Smith
- 👤 Charles J Kibler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:30
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A HIGHLY POLYMERIC LINEAR POLYAMIDE OF (A) AT LEAST ONE BIFUNCTIONAL DIBASIC ORGANIC CARBOXYLIC ACID COMPONENT CONTAINING FROM 1 TO 40 CARBON ATOMS AND (B) A BIFUNCTIONAL ORGANIC DIAMINE COMPONENT, THE DIAMINE COMPONENT OF SAID POLYAMIDE CONSISTING ESSENTIALLY OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE CIS AND TRANS ISOMERS OF 1,3-CYCLOHEXANEBIS(METHYLAMINE) AND 1,4-CYCLOHEXANEBIS(METHYLAMINE).
Claim 2
Dependent Claim
56 words
A HIGHLY POLYMERIC LINEAR POLYAMIDE OF (A) AT LEAST ONE BIFUNCTIONAL DIBASIC ORGANIC CARBOXYLIC ACID COMPONENT CONTAINING FROM 1 TO 40 CARBON ATOMS AND (B) A BIFUNCTIONAL ORGANIC DIAMINE COMPONENT, THE DIAMINE COMPONENT OF SAID POLYAMIDE CONSISTING ESSENTIALLY OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE CIS AND TRANS ISOMERS OF 1,3-CYCLOHEXANEBIS(METHYLAMINE) AND 1,4-CYCLOHEXANEBIS(METHYLAMINE).
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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |