Patent US2878140A successfully refreshed from Google Patents.
US2878140A
Expired / Lapsed
US
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Densification of coating by use of isostatic hydraulic pressure
Assignee: Vitro Corp of America
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Filing: 1957-05-01
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Granted: 1959-03-17
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Expires: 1977-05-01
Abstract
No abstract record available.
Inventors
- 👤 Harold N Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:22
CPC Classifications
B; B22; B22F; B22F7/00; B22F7/06; B22F7/08; C; C25; C25D; C25D13/00; C25D13/02; Y; Y10; Y10S; Y10S411/00; Y10S411/90; Y10S411/901; Y10S411/902; Y10S411/914; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/94; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN THE PREPARATION OF A COATING ON THE SURFACE OF A SUBSTRATE THE STEPS OF FORMING A PRIMARY COATING OF DISCRETE DISCONNECTED SINTERABLE PARTICLES ON SAID SURFACE, COVERING SAID COATING WITH A PERFORMED FLEXIBLE SHEET, APPLYING ISOSTATIC HYDRAULIC PRESSURE TO SAID SHEET AND TO THE COATING WHICH THE SHEET COVERS THEREBY TO DENSIFY SAID COATING, AND THEREAFTER HEATING SAID COATING AT A TEMPERATURE HIGH ENOUGH TO CAUSE SAID SINTERABLE PARTICLES TO SINTER BUT BELOW THE MELTING POINT OF THE SUBSTRATE FOR A TIME SUFFICIENT TO SINTER SAID PARTICLES, THE PROPORTION OF SINTERABLE PARTICLES IN SAID PRIMARY COATING BEING SUFFICIENT TO FORM A DENSE ADHERENT COATING OF LOW POROSITY ON SAID SUBSTRATE.
Claim 2
Dependent Claim
111 words
IN THE PREPARATION OF A COATING ON THE SURFACE OF A SUBSTRATE THE STEPS OF FORMING A PRIMARY COATING OF DISCRETE DISCONNECTED SINTERABLE PARTICLES ON SAID SURFACE, COVERING SAID COATING WITH A PERFORMED FLEXIBLE SHEET, APPLYING ISOSTATIC HYDRAULIC PRESSURE TO SAID SHEET AND TO THE COATING WHICH THE SHEET COVERS THEREBY TO DENSIFY SAID COATING, AND THEREAFTER HEATING SAID COATING AT A TEMPERATURE HIGH ENOUGH TO CAUSE SAID SINTERABLE PARTICLES TO SINTER BUT BELOW THE MELTING POINT OF THE SUBSTRATE FOR A TIME SUFFICIENT TO SINTER SAID PARTICLES, THE PROPORTION OF SINTERABLE PARTICLES IN SAID PRIMARY COATING BEING SUFFICIENT TO FORM A DENSE ADHERENT COATING OF LOW POROSITY ON SAID SUBSTRATE.
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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |