Patent US3734713A successfully refreshed from Google Patents.
US3734713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of powder composition for making dispersion strengthened binary and higher nickel base alloys
Assignee: Viridian Inc Canada
•
Filing: 1969-08-21
•
Granted: 1973-05-22
•
Expires: 1989-08-21
Abstract
Abstract METAL-REFRACTORY OXIDE POWDER COMPOSITIONS ADAPTED FOR POWDER METALLURGICAL FABRICATION OF WROUGHT DISPERSION STRENGTHENED NICKEL BASE BINARY AND HIGHER ALLOYS ARE PREPARED BY WET ATTRITOR GRINDING BLENDS OF VERY FINELY DIVIDED METAL POWDERS. THE BLENDS ARE FORMED OF COMPOSITE NICKEL-REFRACTORY OXIDE POWDER AND CHROMIUM, TUNGSTEN, MOLYBDENUM AND/OR COBALT POWDER HAVING A PARTICLE SIZE BELOW 1 MICRON. THE WET ATTRITOR GRINDING IS CONDUCTED FOR A TIME SUFFICIENT TO RPODUCE A HOMOGENEOUS POWDER MIXTURE AND TO EFFECT UNIFORM SPATIAL ISTRIBUTION OF THE REFRACTORY OXIDE PARTICLES IN THE POWDER MIXTURE.
Inventors
- 👤 B Kushnir
- 👤 L Norris
- 👤 R Fraser
- 👤 D Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:56
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/04; H01M4/0402; H01M4/0404
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |