Patent US2230043A successfully refreshed from Google Patents.
US3240850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of structural slabs
Assignee: Selas Corp of America
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Filing: 1963-03-08
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Granted: 1966-03-15
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Expires: 1983-03-08
Abstract
No abstract record available.
Inventors
- 👤 Frederic O Hess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:38
CPC Classifications
B; B28; B28B; B28B5/00; B28B5/02; B28B11/00; B28B11/04; B28B23/00; B28B23/02; B28B7/00; B28B7/34; B28B7/342
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE METHOD OF MAKING A REINFORCED CERAMIC SLAB WHICH COMPRISES: COLLECTING ON A SURFACE INDIVIDUALY BLOATED CLAY PARTICLES, WHILE THEIR SURFACES ARE STILL AT A TEMPERATURE HIGH ENOUGH TO BE TACKY, IN SUFFICIENT QUANTITIES TO PRODUCE A SLAB OF A PREDETERMINED THICKNESS, FORMING ON THE FACE OF THE SLAB WHICH ENGAGED SAID SURFACE AS THE SLAB IS BEING FORMED GROOVES IN A PATTERN CORRESPONDING TO A PREDETERMINED LOCATION OF REINFORCEING ELEMENTS, COOLING SAID SLAB TO PERMIT IT TO BECOME RIGID AND REMOVE STRESSES THEREIN, PLACING REINFORCING ELEMENTS IN SAID GROOVES, AND CEMENTING SAID REINFORCING ELEMENTS IN SAID GROOVES, AND CEMENTING SAID REINFORCEING ELEMENTS PERMANENTLY IN SAID GROOVES.
Claim 2
Independent Claim
107 words
THE METHOD OF MAKING A REINFORCED CERAMIC SLAB WHICH COMPRISES: COLLECTING ON A SURFACE INDIVIDUALY BLOATED CLAY PARTICLES, WHILE THEIR SURFACES ARE STILL AT A TEMPERATURE HIGH ENOUGH TO BE TACKY, IN SUFFICIENT QUANTITIES TO PRODUCE A SLAB OF A PREDETERMINED THICKNESS, FORMING ON THE FACE OF THE SLAB WHICH ENGAGED SAID SURFACE AS THE SLAB IS BEING FORMED GROOVES IN A PATTERN CORRESPONDING TO A PREDETERMINED LOCATION OF REINFORCEING ELEMENTS, COOLING SAID SLAB TO PERMIT IT TO BECOME RIGID AND REMOVE STRESSES THEREIN, PLACING REINFORCING ELEMENTS IN SAID GROOVES, AND CEMENTING SAID REINFORCING ELEMENTS IN SAID GROOVES, AND CEMENTING SAID REINFORCEING ELEMENTS PERMANENTLY IN SAID GROOVES.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |