US3288615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Porous ceramic bodies and composite members and methods of making the same
Assignee: Haeger Potteries Inc
•
Filing: 1964-09-17
•
Granted: 1966-11-29
•
Expires: 1984-09-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Estes
- 👤 Bruchmann Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:38
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
THE METHOD OF MAKING A POROUS CERAMIC MEMBER COMPRISING FORMING A MIXTURE CONSISTING ESSENTIALLY BY WEIGHT OF FROM ABOUT 44% TO ABOUT 57% ALUMINA AND FROM ABOUT 8% TO ABOUT 25% SILICA AND FROM ABOUT 25% TO ABOUT 39% OF A CARBONATE OF A METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM, SHAPING THE MIXTURE TO FORM A BODY HAVING A DESIRED SHAPE, HEAT ING SAID BODY TO AN ELEVATED TEMPERATURE IN THE RANGE FROM ABOUT 2,300*F. TO ABOUT 2,700*F. TO FIRE SAID BODY, AND COOLING SAID BODY TO PROVIDE A POROUS CERAMIC MEMBER HAVING A PLURALITY OF OPEN CELLS OF CAPILLARY SIZE DISTRIBUTED THERETHROUGH AND INTERCONNECTED TO FORM PASSAGES EXTENDING FROM EACH AREA IN SAID MEMBER TO ANY OTHER AREA IN SAID MEMBER AND TO AND TERMINATING AT THE SURFACE OF SAID MEMBER.
Claim 2
Independent Claim
136 words
THE METHOD OF MAKING A POROUS CERAMIC MEMBER COMPRISING FORMING A MIXTURE CONSISTING ESSENTIALLY BY WEIGHT OF FROM ABOUT 44% TO ABOUT 57% ALUMINA AND FROM ABOUT 8% TO ABOUT 25% SILICA AND FROM ABOUT 25% TO ABOUT 39% OF A CARBONATE OF A METAL SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM, SHAPING THE MIXTURE TO FORM A BODY HAVING A DESIRED SHAPE, HEAT ING SAID BODY TO AN ELEVATED TEMPERATURE IN THE RANGE FROM ABOUT 2,300*F. TO ABOUT 2,700*F. TO FIRE SAID BODY, AND COOLING SAID BODY TO PROVIDE A POROUS CERAMIC MEMBER HAVING A PLURALITY OF OPEN CELLS OF CAPILLARY SIZE DISTRIBUTED THERETHROUGH AND INTERCONNECTED TO FORM PASSAGES EXTENDING FROM EACH AREA IN SAID MEMBER TO ANY OTHER AREA IN SAID MEMBER AND TO AND TERMINATING AT THE SURFACE OF SAID MEMBER.
References Cited (Backward Citations)
US1967275A
Cited
US2007053A
Cited
GB601989A
Cited
US2631940A
Cited
US3093593A
Cited
US3116522A
Cited
US3075846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |