US3018176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elution of precious metal salts and eluants therefor
Assignee: Rolnn & Haas G M B H
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Filing: 1958-02-26
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Granted: 1962-01-23
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Expires: 1978-02-26
Abstract
No abstract record available.
Inventors
- 👤 Zima Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:37
CPC Classifications
C; C01; C01G; C01G7/00; C01G7/003; C01G55/00; C01G55/001; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/262; C22B3/306; C22B3/42; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
PROCESS FOR EXTRACTING A SALT OF A NOBLE METAL FROM A SOLID, AMORPHOUS, BROWN-TO-BLACK POLYMER PREPARED BY POLYMERIZING HYDROCYANIC ACID IN THE PRESENCE OF AN ALKALI, SAID POLYMER CONTAINING SAID SALT, WHICH COMPRISES ELUTION THEREOF WITH A LIQUID ELUANT COMPRISING A MINOR PORTION OF AN AQUEOUS HYDROGEN CHLORIDE SOLUTION AND A MAJOR PORTION OF AN ORGANIC COMPONENT MISCIBLE WITH SAID AQUEOUS HYDROGEN CHLORIDE SOLUTION.
Claim 2
Dependent Claim
64 words
PROCESS FOR EXTRACTING A SALT OF A NOBLE METAL FROM A SOLID, AMORPHOUS, BROWN-TO-BLACK POLYMER PREPARED BY POLYMERIZING HYDROCYANIC ACID IN THE PRESENCE OF AN ALKALI, SAID POLYMER CONTAINING SAID SALT, WHICH COMPRISES ELUTION THEREOF WITH A LIQUID ELUANT COMPRISING A MINOR PORTION OF AN AQUEOUS HYDROGEN CHLORIDE SOLUTION AND A MAJOR PORTION OF AN ORGANIC COMPONENT MISCIBLE WITH SAID AQUEOUS HYDROGEN CHLORIDE SOLUTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-22 | 1965-07-24 | 1966-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-22 | 1969-07-24 | 1970-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-22 | 1973-07-24 | 1974-01-23 | $7700.00 | Window Closed / Lapsed |