US2956987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminomethyl norcamphanecarboxylic acids and polyamides thereof
Assignee: Eastman Kodak Co
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Filing: 1958-06-12
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Granted: 1960-10-18
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Expires: 1978-06-12
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 Jr Winston J Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:27
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/795; C; C08; C08G; C08G69/00; C08G69/02; C08G69/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
8 words
A MIXTURE COMPRISING 2-AMINOMETHYL-5-NORCAMPHANECARBOXYLIC ACID AND 2-AMINOMETHYL-6-NORCAMPHANECARBOXYLIC ACID.
Claim 2
Dependent Claim
8 words
A MIXTURE COMPRISING 2-AMINOMETHYL-5-NORCAMPHANECARBOXYLIC ACID AND 2-AMINOMETHYL-6-NORCAMPHANECARBOXYLIC ACID.
Claim 3
Dependent Claim
27 words
A RESINOUS COPOLYAMIDE OF A MIXTURE OF 2-AMINO METHYL-5-NORCAMPHANECARBOXYLIC ACID AND 2-AMINOMETHYL-6-NORCAMPHANECARBOXYLIC ACID HAVING AN INHERENT VISCOSITY OF ABOUT 0.68 AND A MELTING POINT ABOUT 230-245* C.
Claim 4
Dependent Claim
27 words
A RESINOUS COPOLYAMIDE OF A MIXTURE OF 2-AMINO METHYL-5-NORCAMPHANECARBOXYLIC ACID AND 2-AMINOMETHYL-6-NORCAMPHANECARBOXYLIC ACID HAVING AN INHERENT VISCOSITY OF ABOUT 0.68 AND A MELTING POINT ABOUT 230-245* C.
References Cited (Backward Citations)
DE801331C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |