US3196107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing copper ions from solution
Assignee: EIDP Inc
•
Filing: 1961-03-13
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Granted: 1965-07-20
•
Expires: 1981-03-13
Abstract
No abstract record available.
Inventors
- 👤 Tomic Ernst Alois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:51
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/22; C07D295/28; C07D295/32; C10; C10G; C10G29/00; C10G29/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
A PROCESS FOR REMOVING COPPER IONS FROM SOLUTION WHICH COMPRISES CONTACTING SAID SOLUTION WITH A POLYMERIC MATERIAL HAVING A REPEATING THIOSEMICABAZIDE UNIT OF THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
26 words
A PROCESS FOR REMOVING COPPER IONS FROM SOLUTION WHICH COMPRISES CONTACTING SAID SOLUTION WITH A POLYMERIC MATERIAL HAVING A REPEATING THIOSEMICABAZIDE UNIT OF THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2965441A
Cited
US2954276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |