US3069759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of dispersion strengthened metals
Assignee: Individual
•
Filing: 1960-04-27
•
Granted: 1962-12-25
•
Expires: 1980-04-27
Abstract
No abstract record available.
Inventors
- 👤 Nicholas J Grant
- 👤 Klaus M Zwilsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:22
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A METALLURGICAL POWDER COMPOSITION MIXTURE FOR USE IN THE POWDER METALLURGICAL PRODUCTION OF DISPERSION STRENGTHENED METALS BY THE FABRICATION OF SAID COMPOSITION INTO A DENSE WROUGHT STRUCTURE COMPRISING SEPARATE PARTICLES OF A DUCTILE MATRIX METAL POWDER OF AVERAGE PARTICLE SIZE RANGING UP TO ABOUT 20 MICRONS HAVING SUBSTANTIALLY UNIFORMLY MIXED THEREWITH SEPARATE PARTICLES OF ABOUT 1 TO 15 VOLUME PERCENT OF A REFRACTORY OXIDE POWDER WHOSE NEGATIVE FREE ENERGY OF THE OXIDE AT ABOUT 25*
Claim 2
Dependent Claim
75 words
A METALLURGICAL POWDER COMPOSITION MIXTURE FOR USE IN THE POWDER METALLURGICAL PRODUCTION OF DISPERSION STRENGTHENED METALS BY THE FABRICATION OF SAID COMPOSITION INTO A DENSE WROUGHT STRUCTURE COMPRISING SEPARATE PARTICLES OF A DUCTILE MATRIX METAL POWDER OF AVERAGE PARTICLE SIZE RANGING UP TO ABOUT 20 MICRONS HAVING SUBSTANTIALLY UNIFORMLY MIXED THEREWITH SEPARATE PARTICLES OF ABOUT 1 TO 15 VOLUME PERCENT OF A REFRACTORY OXIDE POWDER WHOSE NEGATIVE FREE ENERGY OF THE OXIDE AT ABOUT 25*
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) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |