US2767082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of catalytic nucleating agents in the reduction of salts to metal
Assignee: Chemical Construction Corp
•
Filing: 1953-12-23
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Granted: 1956-10-16
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Expires: 1973-12-23
Abstract
No abstract record available.
Inventors
- 👤 Roy Tuhin Kumar
- 👤 Mackiw Vladimir Nicolaus
- 👤 Lin Wei Cheng
- 👤 Kunda Vasyl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:14
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0453; C22B23/0461
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN RECOVERING A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, NICKEL, AND COBALT AS DISCRETE ELEMENTAL METAL POWDER FROM AN AQUEOIUS SOLUTION CONTAINING AT LEAST ONE DISSOLVED SALT OF AT LEAST ONE SUCH METAL BY TREATING SUCH SOLUTION WITH A REDUCING GAS AT A SUPERATMOSPHERIC PRESSURE AND AN ELEVATED TEMPERATURE, THE IMPROVEMENT IN COMBINATION THEREWITH OF RAPIDLY INDUCING REDUCTION TO AND FORMATION OF NUCLEI WHICH COMPRISES: INITIATING TREATMENT IN THE PRESENCE OF A FINITE AMOUNT OF A NONGASEOUS, NONMETALLIC CATALYTIC NUCLEATION PROMOTER WHEREBY NUCLEI ARE FORMED.
Claim 2
Dependent Claim
87 words
IN RECOVERING A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, NICKEL, AND COBALT AS DISCRETE ELEMENTAL METAL POWDER FROM AN AQUEOIUS SOLUTION CONTAINING AT LEAST ONE DISSOLVED SALT OF AT LEAST ONE SUCH METAL BY TREATING SUCH SOLUTION WITH A REDUCING GAS AT A SUPERATMOSPHERIC PRESSURE AND AN ELEVATED TEMPERATURE, THE IMPROVEMENT IN COMBINATION THEREWITH OF RAPIDLY INDUCING REDUCTION TO AND FORMATION OF NUCLEI WHICH COMPRISES: INITIATING TREATMENT IN THE PRESENCE OF A FINITE AMOUNT OF A NONGASEOUS, NONMETALLIC CATALYTIC NUCLEATION PROMOTER WHEREBY NUCLEI ARE FORMED.
References Cited (Backward Citations)
US1426517A
Cited
US1783622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |