Patent US4022245A successfully refreshed from Google Patents.
Patent US2732401A successfully refreshed from Google Patents.
US2732401A
Expired / Lapsed
US
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Preparation of dithiooxamide
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:44
CPC Classifications
C; C07; C07C; C07C279/00; C07C279/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
THE PROCESS OF PREPARING DITHIOOXAMIDE WHICH COMPRISES PASSING GASEOUS CYANOGEN INTO AN AQUEOUS SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM SULFHYDRATE, POTASSIUM SULFHYDRATE, CALCIUM SULFHYDRATE, MAGNESIUM SULFHYDRATE, AMMONIUM SULFHYDRATE, SODIUM SULFIDE AND AMMONIUM SULFIDE WHILE MAINTAINING THE PH BETWEEN APPROXIMATELY 6 AND 10 BY ADDITION OF AN ACID SELECTED FROM THE GROUP CONSISTING OF THE MINERAL ACIDS AND ACETIC ACID.
Claim 2
Dependent Claim
64 words
THE PROCESS OF PREPARING DITHIOOXAMIDE WHICH COMPRISES PASSING GASEOUS CYANOGEN INTO AN AQUEOUS SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SODIUM SULFHYDRATE, POTASSIUM SULFHYDRATE, CALCIUM SULFHYDRATE, MAGNESIUM SULFHYDRATE, AMMONIUM SULFHYDRATE, SODIUM SULFIDE AND AMMONIUM SULFIDE WHILE MAINTAINING THE PH BETWEEN APPROXIMATELY 6 AND 10 BY ADDITION OF AN ACID SELECTED FROM THE GROUP CONSISTING OF THE MINERAL ACIDS AND ACETIC ACID.
References Cited (Backward Citations)
US2484257A
Cited
US2557980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |