US3078301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of n-carboalkoxy-e-aminocaproic acid
Assignee: Honeywell International Inc
•
Filing: 1960-10-31
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Granted: 1963-02-19
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Expires: 1980-10-31
Abstract
No abstract record available.
Inventors
- 👤 Taub Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:34
CPC Classifications
C; C07; C07C; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/22; C08; C08K; C08K5/00; C08K5/16; C08K5/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A PROCESS FOR THE PREPARATION OF AN N-CARBOALKOXYE-AMINICAPROIC ACID ESTER FROM E-CAPROLACTAM WHICH COMPRISES THE STEPS OF HEATING SAID E-CAPROLACTAM WITH AQUEOUS ALKALI TO FORM A SALT OF E-AMINOCAPROIC ACID, TREATING SAID SALT WITH HALOFORMIC ACID ESTER, AND ESTERIFYING THE RESULTANT URETHANE OF E-AMINOCAPROIC ACID WITH AN ALCOHOL.
Claim 2
Dependent Claim
48 words
A PROCESS FOR THE PREPARATION OF AN N-CARBOALKOXYE-AMINICAPROIC ACID ESTER FROM E-CAPROLACTAM WHICH COMPRISES THE STEPS OF HEATING SAID E-CAPROLACTAM WITH AQUEOUS ALKALI TO FORM A SALT OF E-AMINOCAPROIC ACID, TREATING SAID SALT WITH HALOFORMIC ACID ESTER, AND ESTERIFYING THE RESULTANT URETHANE OF E-AMINOCAPROIC ACID WITH AN ALCOHOL.
References Cited (Backward Citations)
US2317378A
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US2807598A
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US2777873A
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US2828274A
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US2917502A
Cited
US2871259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |