Patent US3211386A successfully refreshed from Google Patents.
US3211386A
Expired / Lapsed
US
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Production of hard metal powders
Assignee: Deutsche Edelstahlwerke AG
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Filing: 1963-02-04
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Granted: 1965-10-12
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Expires: 1983-02-04
Abstract
No abstract record available.
Inventors
- 👤 Frehn Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:02
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; B; B22; B22F; B22F9/00; B22F9/02; B22F9/04; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/327; C23; C23C; C23C4/00; C23C4/04; C23C4/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE METHOD OF PRODUCING A HARD METAL POWDER FROM A HARD CARBIDE METAL WHICH COMPRISES DISPERSING BORON IN THE MATRIX FOR THE CARBIDE METAL IN A QUANTITY OF FROM 0.05% TO 2% OF THE CARBIDE METAL AND MECHANICALLY DISINTEGRATING THE CARBIDE METAL TO FORM A POWDER SUITABLE FOR SPRAYING OR FUSING TO FORM A COATING ON A WORKPIECE.
Claim 2
Independent Claim
58 words
THE METHOD OF PRODUCING A HARD METAL POWDER FROM A HARD CARBIDE METAL WHICH COMPRISES DISPERSING BORON IN THE MATRIX FOR THE CARBIDE METAL IN A QUANTITY OF FROM 0.05% TO 2% OF THE CARBIDE METAL AND MECHANICALLY DISINTEGRATING THE CARBIDE METAL TO FORM A POWDER SUITABLE FOR SPRAYING OR FUSING TO FORM A COATING ON A WORKPIECE.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |