US2996389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing porous ceramic products
Assignee: Individual
•
Filing: 1959-03-13
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Granted: 1961-08-15
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Expires: 1979-03-13
Abstract
No abstract record available.
Inventors
- 👤 Fernhof Sven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:12
CPC Classifications
C; C04; C04B; C04B38/00; C04B38/06; C04B38/063; C04B38/0635; C04B38/0645; C04B38/067; Y; Y10; Y10S; Y10S264/00; Y10S264/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD OF MANUFACTURING LIGHTWEIGHT CERAMIC PRODUCTS WHICH COMPRISES: (1) FORMING A WET MOLDABLE MASS OF CLAY AND PARTICULATE, COMBUSTIBLE, COMPRESSIBLE ARTIFICIAL RESIN FILLER, THE PARTICLES OF WHICH HAVE A COMPRESSIBILITY AT LEAST EQUAL TO THE SHRINKAGE FACTOR OF THE CLAY DURING DRYING, (2) FORMING THE MASS INTO THE REQUIRED SHAPE, (3) DRYING THE MASS, AND (4) FIRING, THEREBY CAUSING COMBUSTION OF THE RESIN FILLER PARTICLES AND OBTAINING A SHAPED CERAMIC PRODUCT FREE FROM CRACKS AND WITH PARTICULATE SEPARATE, NON-CONTINUOUS PORES.
Claim 2
Independent Claim
81 words
A METHOD OF MANUFACTURING LIGHTWEIGHT CERAMIC PRODUCTS WHICH COMPRISES: (1) FORMING A WET MOLDABLE MASS OF CLAY AND PARTICULATE, COMBUSTIBLE, COMPRESSIBLE ARTIFICIAL RESIN FILLER, THE PARTICLES OF WHICH HAVE A COMPRESSIBILITY AT LEAST EQUAL TO THE SHRINKAGE FACTOR OF THE CLAY DURING DRYING, (2) FORMING THE MASS INTO THE REQUIRED SHAPE, (3) DRYING THE MASS, AND (4) FIRING, THEREBY CAUSING COMBUSTION OF THE RESIN FILLER PARTICLES AND OBTAINING A SHAPED CERAMIC PRODUCT FREE FROM CRACKS AND WITH PARTICULATE SEPARATE, NON-CONTINUOUS PORES.
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) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |