US3023240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hxcxo
Assignee: —
•
Filing: —
•
Granted: 1962-02-27
•
Expires: 1979-02-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:14
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
29 words
PROCESS FOR THE PREPARATION OF N,N'' -DISUBSTITUTED MALEAMIDES WHICH COMPRISES ADMIXING AN ORGANIC MONOAMINE HAVING AT LEAST ONE AMINOHYDROGEN ATOM PER MOLECULE WITH AN N-SUBSTITUTED ISOMALEIMIDE HAVING THE FORMULA:
Claim 2
Dependent Claim
29 words
PROCESS FOR THE PREPARATION OF N,N'' -DISUBSTITUTED MALEAMIDES WHICH COMPRISES ADMIXING AN ORGANIC MONOAMINE HAVING AT LEAST ONE AMINOHYDROGEN ATOM PER MOLECULE WITH AN N-SUBSTITUTED ISOMALEIMIDE HAVING THE FORMULA:
Claim 3
Dependent Claim
13 words
PROCESS AS DEFINED IN CLAIM 1 WHEREIN THE ORGANIC MONOAMINE IS N-BUTYL AMINE.
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) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |