Patent US2964420A successfully refreshed from Google Patents.
US2964420A
Expired / Lapsed
US
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Refractory coated body
Assignee: Union Carbide Corp
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Filing: 1955-06-14
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Granted: 1960-12-13
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Expires: 1975-06-14
Abstract
No abstract record available.
Inventors
- 👤 Richard M Poorman
- 👤 Herbert B Sargent
- 👤 Lamprey Headlee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:24
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/04; C23C4/06; C23C4/10; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/256; Y10T428/257
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
AN ARTICLE OF MANUFACTURE COMPRISING A WORKPIECE HAVING BONDED TO A SURFACE THEREOF A THIN, HIGHLY ADHERENT COATING EXHIBITING A DIAMOND PYRAMID HARDNESS OF AT LEAST 600 UNDER A 300 GRAM LOAD, LESS THAN 3% POROSITY, AND A BULK DENSITY SUBSTANTIALLY THE SAME AS THAT OF SOLID MATERIAL OF THE SAME COMPOSITION AND HAVING A LAMELLAR STRUCTURE OF INTERLOCKING AND OVERLAPPING MICROSCOPIC LEAVES MECHANICALLY BONDED TO EACH OTHER AND TO SAID WORKPIECE WITHOUT SUBSTANTIAL ALLOYING AT THE INTERFACE THEREOF, SAID COATING BEING FORMED BY INTRODUCING POWDERED REFRACTORY MATERIAL OF LESS THAN 150 MICRONS DIAMETER AND CONTAINING AT LEAST 70% OF AT LEAST ONE REFRACTORY MATERIAL HAVING A MELTING POINT GREATER THAN APPROXIMATELY 2370*F. SELECTED FROM THE GROUP CONSISTING OF METALS, METAL CARBIDES, METAL NITRIDES, METAL BORIDES, METAL OXIDES AND METAL SILICIDES INTO A HIGH VELOCITY, HIGH TEMPERATURE GAS STREAM AND DIRECTING SUCH POWDER LADEN GAS STREAM AGAINST SAID WORKPIECE.
Claim 2
Dependent Claim
149 words
AN ARTICLE OF MANUFACTURE COMPRISING A WORKPIECE HAVING BONDED TO A SURFACE THEREOF A THIN, HIGHLY ADHERENT COATING EXHIBITING A DIAMOND PYRAMID HARDNESS OF AT LEAST 600 UNDER A 300 GRAM LOAD, LESS THAN 3% POROSITY, AND A BULK DENSITY SUBSTANTIALLY THE SAME AS THAT OF SOLID MATERIAL OF THE SAME COMPOSITION AND HAVING A LAMELLAR STRUCTURE OF INTERLOCKING AND OVERLAPPING MICROSCOPIC LEAVES MECHANICALLY BONDED TO EACH OTHER AND TO SAID WORKPIECE WITHOUT SUBSTANTIAL ALLOYING AT THE INTERFACE THEREOF, SAID COATING BEING FORMED BY INTRODUCING POWDERED REFRACTORY MATERIAL OF LESS THAN 150 MICRONS DIAMETER AND CONTAINING AT LEAST 70% OF AT LEAST ONE REFRACTORY MATERIAL HAVING A MELTING POINT GREATER THAN APPROXIMATELY 2370*F. SELECTED FROM THE GROUP CONSISTING OF METALS, METAL CARBIDES, METAL NITRIDES, METAL BORIDES, METAL OXIDES AND METAL SILICIDES INTO A HIGH VELOCITY, HIGH TEMPERATURE GAS STREAM AND DIRECTING SUCH POWDER LADEN GAS STREAM AGAINST SAID 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) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |