US2554319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing cuprous oxide
Assignee: C K Williams & Co
•
Filing: 1946-04-23
•
Granted: 1951-05-22
•
Expires: 1966-04-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Ayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:03
CPC Classifications
C; C01; C01G; C01G3/00; C01G3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN THE REDUCTION OF CUPRIC OXIDE DIRECTLY TO CUPROUS OXIDE, THE IMPROVEMENT WHICH COMPRISES INTIMATELY MIXING THE CUPRIC OXIDE WITH A STOICHIOMETRIC PROPORTION OF CARBON IN PULVERULENT FORM CALCULATED TO PRODUCE THE CUPROUS OXIDE AND CONTINUOUSLY PASSING THE RESULTING MIXTURE THROUGH A HEATING ZONE IN A NON-OXIDIZING, AT MOSPHERE WHEREIN THE MIXTURE IS HEATED TO AT LEAST 1100* F. AND THE CUPRIC OXIDE IS REDUCED SUBSTANTIALLY ONLY TO CUPROUS OXIDE BY THE ACTION OF SAID CARBON.
Claim 2
Dependent Claim
76 words
IN THE REDUCTION OF CUPRIC OXIDE DIRECTLY TO CUPROUS OXIDE, THE IMPROVEMENT WHICH COMPRISES INTIMATELY MIXING THE CUPRIC OXIDE WITH A STOICHIOMETRIC PROPORTION OF CARBON IN PULVERULENT FORM CALCULATED TO PRODUCE THE CUPROUS OXIDE AND CONTINUOUSLY PASSING THE RESULTING MIXTURE THROUGH A HEATING ZONE IN A NON-OXIDIZING, AT MOSPHERE WHEREIN THE MIXTURE IS HEATED TO AT LEAST 1100* F. AND THE CUPRIC OXIDE IS REDUCED SUBSTANTIALLY ONLY TO CUPROUS OXIDE BY THE ACTION OF SAID CARBON.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |