US3843667A
Expired / Lapsed
US
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N-imidazole compounds and their complex metal derivatives
Assignee: Individual
•
Filing: 1973-09-12
•
Granted: 1974-10-22
•
Expires: 1993-09-12
Abstract
Abstract Imidazole compounds are obtained from the reaction of substituted imidazoles and epoxides of unsaturated fatty acid derivatives, including amides and esters, and unsaturated long chain hydrocarbons. Solutions of the resulting imidazoles in water immiscible solvents are effective in removing metal cations such as copper, mercury, cobalt, lead and zinc from their solutions in water.
Inventors
- 👤 M Cupery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:08
CPC Classifications
C; C07; C07D; C07D235/00; C07D235/02; C07D235/04; C07D235/06; C02; C02F; C02F1/00; C02F1/26; C07D231/00; C07D231/02; C07D231/10; C07D231/12; C07D233/00; C07D233/54; C07D233/56; C07D235/08; C07D249/00; C07D249/02; C07D249/08; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/36; C22B3/362; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
7 words
A COMPOUND FROM THE GROUP CONSISTINF OF:
Claim 2
Dependent Claim
7 words
A COMPOUND FROM THE GROUP CONSISTINF OF:
Claim 3
Dependent Claim
16 words
A compound of claim 1 wherein R1 is decyl, R2, R3 R7 and R8 are hydrogen.
Claim 4
Dependent Claim
8 words
A compound of claim 1 having the formula
Claim 5
Dependent Claim
17 words
The complex of claim 1 wherein the metal is copper, cobalt, nickel, lead, mercury, silver and zinc.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |