US3379804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of the production of a body from a slip in a porous mold
Assignee: Koninklijke Sphinx-Ceramique V/H Petrus Regout NV
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Filing: 1965-06-07
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Granted: 1968-04-23
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Expires: 1985-06-07
Abstract
No abstract record available.
Inventors
- 👤 Loosjes Robert
- 👤 Bernardus J M Maas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:19
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/26; B28B1/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
THE METHOD OF PRODUCING A BODY FROM A SLIP IN A POROUS MOLD, COMPRISING PROVIDING A POROUS MOLD CAVITY HAVING A MOLD PORTION CONFORMING TO THE SHAPE OF THE BODY TO BE PRODUCED, SEALING THE SURFACES OF SAID MOLD OTHER THAN THE SURFACES OF SAID CAVITY PORTION WITH A FLUID IMPERMEABLE LAYER, SUBJECTING ALL SURFACES OF SAID MOLD TO SUBSTANTIALLY UNIFORM PRESSURE INCLUDING SUBJECTING SAID MOLD PORTION TO A SLIP UNDER PRESSURE TO BUILD UP A BODY ON SAID CAVITY PORTION SURFACE CONFORMING TO THE SHAPE THEREOF AND COMPRESSING AIR WITHIN THE BODY OF THE MOLD, AND RELEASING ON SAID MOLD INCLUDING WITHDRAWING SAID SLIP TO ENABLE THE COMPRESSED AIR WITHIN THE BODY OF THE MOLD TO EXPAND TOWARD THE CAVITY PORTION SURFACES TO SEPARATE THE BUILT UP BODY FORM THE CAVITY PORTION SURFACES.
Claim 2
Independent Claim
134 words
THE METHOD OF PRODUCING A BODY FROM A SLIP IN A POROUS MOLD, COMPRISING PROVIDING A POROUS MOLD CAVITY HAVING A MOLD PORTION CONFORMING TO THE SHAPE OF THE BODY TO BE PRODUCED, SEALING THE SURFACES OF SAID MOLD OTHER THAN THE SURFACES OF SAID CAVITY PORTION WITH A FLUID IMPERMEABLE LAYER, SUBJECTING ALL SURFACES OF SAID MOLD TO SUBSTANTIALLY UNIFORM PRESSURE INCLUDING SUBJECTING SAID MOLD PORTION TO A SLIP UNDER PRESSURE TO BUILD UP A BODY ON SAID CAVITY PORTION SURFACE CONFORMING TO THE SHAPE THEREOF AND COMPRESSING AIR WITHIN THE BODY OF THE MOLD, AND RELEASING ON SAID MOLD INCLUDING WITHDRAWING SAID SLIP TO ENABLE THE COMPRESSED AIR WITHIN THE BODY OF THE MOLD TO EXPAND TOWARD THE CAVITY PORTION SURFACES TO SEPARATE THE BUILT UP BODY FORM THE CAVITY PORTION SURFACES.
References Cited (Backward Citations)
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Cited
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US2221794A
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US2303303A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |