US2585185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of copper powder having an average particle size of two microns
Assignee: Individual
•
Filing: 1947-07-16
•
Granted: 1952-02-12
•
Expires: 1967-07-16
Abstract
No abstract record available.
Inventors
- 👤 Lester D Supiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:36
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
THE PROCESS FOR PRODUCING COPPER POWDER HAVING A UNIFORM, FINE PARTICLES SIZE COMPRISING REACTING FINELY DIVIDED CUPROUS AND CUPRIC OXIDES WITH CONCENTRATED SULPHURIC ACID, MAINTAINING A HIGH CONCENTRATION OF THE SULPHURIC ACID OR OF THE RESULTANT COPPER SULPHATE IN THE REACTION, MAINTAINING TEMPERATURE OF HE REACTION LOWER THAN 80* C.
Claim 2
Dependent Claim
50 words
THE PROCESS FOR PRODUCING COPPER POWDER HAVING A UNIFORM, FINE PARTICLES SIZE COMPRISING REACTING FINELY DIVIDED CUPROUS AND CUPRIC OXIDES WITH CONCENTRATED SULPHURIC ACID, MAINTAINING A HIGH CONCENTRATION OF THE SULPHURIC ACID OR OF THE RESULTANT COPPER SULPHATE IN THE REACTION, MAINTAINING TEMPERATURE OF HE REACTION LOWER THAN 80* C.
References Cited (Backward Citations)
US1257943A
Cited
US2170814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |