Patent US3128165A successfully refreshed from Google Patents.
US3128165A
Expired / Lapsed
US
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Hard surfacing material
Assignee: Jersey Production Research Co
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Filing: 1961-11-15
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Granted: 1964-04-07
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Expires: 1981-11-15
Abstract
No abstract record available.
Inventors
- 👤 Harold C Bridwell
- 👤 David S Rowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:39
CPC Classifications
C; C23; C23C; C23C26/00; C23C26/02; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/32; B23K35/327; B23P; B23P5/00; B24; B24D; B24D18/00; B24D3/00; B24D3/02; B24D3/04; B24D3/06; B24D3/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
A HARD SURFACING MATERIAL COMPRISING A PLURALITY OF CLOSELY-SPACED TUNGSTEN CARBIDE PARTICLES BETWEEN ABOUT 0.045 AND ABOUT 0.400 INCH IN SIZE; AN ALLOY BONDING SAID CARBIDE PARTICLES TOGETHER, SAID ALLOY HAVING A MELTING POINT BETWEEN ABOUT 1550*F. AND ABOUT 2400*F. AND IN THE MOLTEN STATE HAVING THE ABILITY TO WET SAID CARBIDE PARTICLES; AND A PLURALITY OF STRUCTURALLY-ALTERED TUNGSTEN CARBIDE POWDER GRANULES AND FINE CRYSTALS OF PRECIPITATED TUNGSTEN CARBIDE DISPERSED WITHIN SAID ALLOY AS A DISCONTINUOUS PHASE.
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |