US3004975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cochs
Assignee: —
•
Filing: —
•
Granted: 1961-10-17
•
Expires: 1978-10-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:40
CPC Classifications
C; C07; C07D; C07D457/00; C07D457/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
A PROCESS FOR THE MANUFACTURE OF BENZ-(CD)-INDOLES WHICH CONSISTS OF CONTACTING A 1-X-8-AMINO-1:2:3:4-TETRAHYDRO-NAPHTHALENE-1-CARBOXYLIC ACID LACTAM, IN WHICH X STANDS FOR A MEMEBR SELECTED FROM THE GROUP CONSISTING DI-LOWER ALKOXY-METHYL AND LOWER ALKENYLENEDIOXY-METHYL, (A) WITH A BASIC AGENT SELECTED FROM THE GROUP CONSISTING OF OXIDE SAND HYDROXIDES OF ALKALI METALS AND ALKALINE EARTH METALS, ALKALI CARBONATES, QUATERNARY AMMONIUM BASES AND BASIC ION-EXCHANGERS, AND (B) WITH AN ACIDIC REAGENT SELECTED FROM THE GROUP CONSISTING OF ORGANIC SULFONIC ACIDS AND MINERAL ACIDS, WHEREBY CARBON DIOXIDE IS SPLIT OFF.
Claim 2
Dependent Claim
85 words
A PROCESS FOR THE MANUFACTURE OF BENZ-(CD)-INDOLES WHICH CONSISTS OF CONTACTING A 1-X-8-AMINO-1:2:3:4-TETRAHYDRO-NAPHTHALENE-1-CARBOXYLIC ACID LACTAM, IN WHICH X STANDS FOR A MEMEBR SELECTED FROM THE GROUP CONSISTING DI-LOWER ALKOXY-METHYL AND LOWER ALKENYLENEDIOXY-METHYL, (A) WITH A BASIC AGENT SELECTED FROM THE GROUP CONSISTING OF OXIDE SAND HYDROXIDES OF ALKALI METALS AND ALKALINE EARTH METALS, ALKALI CARBONATES, QUATERNARY AMMONIUM BASES AND BASIC ION-EXCHANGERS, AND (B) WITH AN ACIDIC REAGENT SELECTED FROM THE GROUP CONSISTING OF ORGANIC SULFONIC ACIDS AND MINERAL ACIDS, WHEREBY CARBON DIOXIDE IS SPLIT OFF.
Claim 3
Dependent Claim
12 words
THE METHOIODIDE OF 3''-AMINO-1-METHYL-3-CARBETHOXY -7- DIETHOXYMETHYL - 1:2:3:4:4A:7:8:8A - OCTAHYDRO5:6-BENZQUINOLINE-7-CARBOXYLIC ACID LACTAM.
Claim 4
Dependent Claim
12 words
THE METHOIODIDE OF 3''-AMINO-1-METHYL-3-CARBETHOXY -7- DIETHOXYMETHYL - 1:2:3:4:4A:7:8:8A - OCTAHYDRO5:6-BENZQUINOLINE-7-CARBOXYLIC ACID LACTAM.
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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |