US2739155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of isoindolenine derivatives
Assignee: Bayer AG
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Filing: 1952-09-04
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Granted: 1956-03-20
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Expires: 1972-09-04
Abstract
No abstract record available.
Inventors
- 👤 Rosch Georg
- 👤 Wolf Walther
- 👤 Vollmann Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:37
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
THE PROCESS FOR THE PRODUCTION OF 1-AMINO-3-IMINOISOINDOLENINES WHICH COMPRISES DISSOLVING OUT THE MONOVALENT COPPER FROM THE YELLOW TO RED-COLORED COPPER COMPLEX COMPOUNDS OBTAINABLE BY HEATING UP TO TEMPERATURE OF ABOUT 200*C. AN O-ARYLENE DERIVATIVE HAVING NO MORE THAN TWO RINGS AND SELECTED FROM THE GROUP CONSISTING OF O-ARYLENE DICARBOXYLIC ACIDS, THE ANHYDRIDES, N-UNSUBSTITUTED AMIDES AND N-UNSUBSTITUTED IMIDES THEREOF; A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA AND BIURET; AMMONIUM MOLYBDATE AND A SOLUBLE COPPER SALT, BY TREATING SAID COMPLEX COMPOUNDS AT TEMPERATURES UP TO ABOUT 30* C. WITH AN AGENT SELECTED FROM THE GROUP CONSISTING OF NITRIC ACID, CONCENTRATED SULFRIC ACID AND AN AQUEOUS SOLUTION OF AN ALKALI METAL CYANIDE.
Claim 2
Dependent Claim
111 words
THE PROCESS FOR THE PRODUCTION OF 1-AMINO-3-IMINOISOINDOLENINES WHICH COMPRISES DISSOLVING OUT THE MONOVALENT COPPER FROM THE YELLOW TO RED-COLORED COPPER COMPLEX COMPOUNDS OBTAINABLE BY HEATING UP TO TEMPERATURE OF ABOUT 200*C. AN O-ARYLENE DERIVATIVE HAVING NO MORE THAN TWO RINGS AND SELECTED FROM THE GROUP CONSISTING OF O-ARYLENE DICARBOXYLIC ACIDS, THE ANHYDRIDES, N-UNSUBSTITUTED AMIDES AND N-UNSUBSTITUTED IMIDES THEREOF; A COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA AND BIURET; AMMONIUM MOLYBDATE AND A SOLUBLE COPPER SALT, BY TREATING SAID COMPLEX COMPOUNDS AT TEMPERATURES UP TO ABOUT 30* C. WITH AN AGENT SELECTED FROM THE GROUP CONSISTING OF NITRIC ACID, CONCENTRATED SULFRIC ACID AND AN AQUEOUS SOLUTION OF AN ALKALI METAL CYANIDE.
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) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |