US2855418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing heavy metal ethylene-bis-dithiocarbamates
Assignee: Progil SARL
•
Filing: 1955-01-17
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Granted: 1958-10-07
•
Expires: 1975-01-17
Abstract
No abstract record available.
Inventors
- 👤 Mugnier Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:44
CPC Classifications
C; C07; C07C; C07C333/00; C07C333/14; C07C333/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A PROCESS FOR PRODUCING HEAVY METAL ETHYLENE-BISDITHIOCARBAMATES COMPRISING FORMING A SALT OF ETHYLENEBIS-DITHIOCARBAMIC ACID AND A WEAK BASE BY REACTING ETHYLENE DIAMINE WITH CARBON DISULFIDE IN AN AQUEOUS MEDIUIM IN THE PRESENCE OF A WEAK BASE AND THEN REACTING THE FORMED SALT IN AN AQUEOUS MEDIUM WITH A SALT OF A HEAVY METAL.
Claim 2
Dependent Claim
53 words
A PROCESS FOR PRODUCING HEAVY METAL ETHYLENE-BISDITHIOCARBAMATES COMPRISING FORMING A SALT OF ETHYLENEBIS-DITHIOCARBAMIC ACID AND A WEAK BASE BY REACTING ETHYLENE DIAMINE WITH CARBON DISULFIDE IN AN AQUEOUS MEDIUIM IN THE PRESENCE OF A WEAK BASE AND THEN REACTING THE FORMED SALT IN AN AQUEOUS MEDIUM WITH A SALT OF A HEAVY METAL.
References Cited (Backward Citations)
US2229562A
Cited
US2609389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |