Patent US2871132A successfully refreshed from Google Patents.
US2871132A
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Glazing composition for structural clay products and process for making same
Assignee: Glen Gery Shale Brick Corp
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Filing: 1958-04-07
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Granted: 1959-01-27
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Expires: 1978-04-07
Abstract
No abstract record available.
Inventors
- 👤 Floyd A Hummel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:03
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/5022; C04B41/80; C04B41/81; C04B41/85; C04B41/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A GLAZING COMPOSITION FOR STRUCTURAL CLAY PRODUCTS AND FUSIBLE THEREWITH AT A TEMPERATURE NOT HIGHER THAN 1950* F. TO PRODUCE A SMOOTH, GLOSSY, CONTINUOUS VITRIFIED FILM THEREON WHICH IS NON-CRAZING AND FREE FROM PIN-HOLES" CONSISTING ESSENTIALLY OF 25% FLINT, 3.6% KAOLINITIC CLAY, 3.6% TALE, 22.6% BARIUM CARBONATE, 5 TO 25% NEPHELINE SYENITE, 5 TO 30% COLEMANITE AND 5 TO 20% LEPIDOLITE, SAID PERCENTAGE BEING BY WEIGHT.
Claim 2
Dependent Claim
66 words
A GLAZING COMPOSITION FOR STRUCTURAL CLAY PRODUCTS AND FUSIBLE THEREWITH AT A TEMPERATURE NOT HIGHER THAN 1950* F. TO PRODUCE A SMOOTH, GLOSSY, CONTINUOUS VITRIFIED FILM THEREON WHICH IS NON-CRAZING AND FREE FROM PIN-HOLES" CONSISTING ESSENTIALLY OF 25% FLINT, 3.6% KAOLINITIC CLAY, 3.6% TALE, 22.6% BARIUM CARBONATE, 5 TO 25% NEPHELINE SYENITE, 5 TO 30% COLEMANITE AND 5 TO 20% LEPIDOLITE, SAID PERCENTAGE BEING BY WEIGHT.
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) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |