US3383737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pressure sintering ceramic material
Assignee: Individual
•
Filing: 1966-05-05
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Granted: 1968-05-21
•
Expires: 1986-05-05
Abstract
No abstract record available.
Inventors
- 👤 Herbert H Greger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:20
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/32; C04B33/326; B; B01; B01J; B01J6/00; B01J6/001; C04B35/00; C04B35/622; C04B35/64; C04B35/645; Y; Y10; Y10S; Y10S425/00; Y10S425/035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A DIE ASSEMBLY FOR FORMING LARGE (1 X 2 X 5", FOR EXAMPLE) PIECES OF CERAMIC MATERIAL ON A PRODUCTION LINE BASIS, SAID ASSEMBLY COMPRISING: A DIE SLEEVE, SAID DIE SLEEVE HAVING A GIVEN HEIGHT AD UPPER AND LOWER SURFACES WITH A CAVITY IN AT LEAST ONE OF SAID SURFACES FOR RECEIVING SAID CERAMIC MATERIAL, SAID DIE SLEEVE BEING COMPOSED OF A RIGID, BRITTLE CERAMIC FOAM HAVING AN AIR CELL VOLUME OF 50 TO ABOUT 87%. HEATING MEANS DISPOSED ADJACENT TO AND IN ESSENTIALLY DIRECT THERMAL CONTACT WITH SAID CERAMIC MATERIAL AND SAID UPPER AND LOWER SURFACES TO MAINTAIN SAID CERAMIC MATERIAL AND AT LEAST A PORTION OF SAID DIE SLEEVE AT ABOUT THE SAME TEMPERATURE; AND NON-ENTERING MEANS FOR APPLYIG PRESSURE TO SAID SURFACES AND SAID CHARGE TO RUPTURE AND COLLAPSE SAID DIE SLEEVE AROUND SAID CHARGE TO CAUSE SAID DIE SLEEVE TO ASSUME A NEW VOLUME BY BREAKDOWN OF ITS CERAMIC CELL WALLS.
Claim 2
Dependent Claim
155 words
A DIE ASSEMBLY FOR FORMING LARGE (1 X 2 X 5", FOR EXAMPLE) PIECES OF CERAMIC MATERIAL ON A PRODUCTION LINE BASIS, SAID ASSEMBLY COMPRISING: A DIE SLEEVE, SAID DIE SLEEVE HAVING A GIVEN HEIGHT AD UPPER AND LOWER SURFACES WITH A CAVITY IN AT LEAST ONE OF SAID SURFACES FOR RECEIVING SAID CERAMIC MATERIAL, SAID DIE SLEEVE BEING COMPOSED OF A RIGID, BRITTLE CERAMIC FOAM HAVING AN AIR CELL VOLUME OF 50 TO ABOUT 87%. HEATING MEANS DISPOSED ADJACENT TO AND IN ESSENTIALLY DIRECT THERMAL CONTACT WITH SAID CERAMIC MATERIAL AND SAID UPPER AND LOWER SURFACES TO MAINTAIN SAID CERAMIC MATERIAL AND AT LEAST A PORTION OF SAID DIE SLEEVE AT ABOUT THE SAME TEMPERATURE; AND NON-ENTERING MEANS FOR APPLYIG PRESSURE TO SAID SURFACES AND SAID CHARGE TO RUPTURE AND COLLAPSE SAID DIE SLEEVE AROUND SAID CHARGE TO CAUSE SAID DIE SLEEVE TO ASSUME A NEW VOLUME BY BREAKDOWN OF ITS CERAMIC CELL WALLS.
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |