Patent US3573013A successfully refreshed from Google Patents.
US3573013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a zinc alloy bonded diamond abrasive tool
Assignee: Naradi Narodni Podnik
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Filing: 1967-10-05
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Granted: 1971-03-30
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Expires: 1987-10-05
Abstract
Abstract A GRINDING WHEEL IN WHICH DIAMOND PARTICLES ARE UNIFORMLY DISTRIBUTED IN AN ANTIMONY-BEARING ZINC ALLOY AND BONDED BY THE ALLOY TO EACH OTHER AND TO A CARRIER DISC IS PREPARED BY CONFINING A PACKED PARTICULATE MIXTURE INCLUDING DIAMONDS AND ANTIMONY PARTICLES IN A CAVITY BOUNDED BY A MOLD AND THE CARRIER INSERTED IN THE MOLD, INTRODUCING MOLTEN ZINC ALLOY FIRST BY GRAVITY AND THEN UNDER FLUCTUATING FLUID PRESSURE, AND SOLIDIFYING THE MOLTEN METAL.
Inventors
- 👤 Frantisek Curn
- 👤 Antonin Dymes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:03
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/04; B24D3/06; B24D3/08; B24D18/00
Claims Analysis
Total Claims: 0
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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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |