Patent US3194724A successfully refreshed from Google Patents.
US3194724A
Expired / Lapsed
US
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Assignee: Burns and Russell Co
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Filing: 1961-06-29
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Granted: 1965-07-13
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Expires: 1981-06-29
Abstract
No abstract record available.
Inventors
- 👤 John A Sergovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:48
CPC Classifications
E; E04; E04C; E04C1/00; E04C1/40; B; B28; B28B; B28B11/00; B28B11/04; C; C08; C08K; C08K3/00; C08K3/01; C08K3/013; E04B; E04B2/00; E04B2/02; E04B2002/0256; E04B2002/0286; Y; Y10; Y10S; Y10S52/00; Y10S52/07; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249968; Y10T428/249969; Y10T428/249987; Y10T428/249991; Y10T428/249992
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A POROUS MASONRY UNIT HAVING AN INTEGRAL MOLDED FACING LAYER OF A COMPOSITION COMPRISING 50 TO 95% OF A GRANULAR SAND FILLER AND 50 TO 5% OF A CURED POLYMER, SAID CURED POLYMER BEING MADE FROM A CCURABLE COMPOSITION CONTAINING (1) A COPOLYMER OF 75 TO 85% OF BUTADIENE-1,3 CONTAINING AT LEAST 30% OF ITS UNSATURATION IN THE FORM OF SIDE VINYL GROUPS WITH 25 TO 15% OF STYRENE AND (2) UP TO 80% OF THE TOTAL POLYMERIZABLE MATERIAL PRESENT OF A VINYL SUBSTITUTED BENZENE HYDROCARBON, SAID PERCENTAGES OF FILLER AND CURED POLYMER BEING BASED ON THE TOTAL OF SAID FILLER AND SAID CURED POLYMER AND IN WHICH SAID SAND AND SAID CURED POLYMER ARE BONDED TO ONE ANOTHER BY A BONDING AGENT SELECTED FROM THE GROUP CONSISTING OF AN ETHYLENICALLY UNSATURATED SILANE, A WERNER-TYPE METHACRYLATO CHROMIC CHLORIDE COMPLEX, ALLYL SILICATE, BETA-METHALYL SILICATE, BETA-PHENYLALLYL SILICATE, AND BETA-CHLOROALLYL SILICATE.
Claim 2
Dependent Claim
148 words
A POROUS MASONRY UNIT HAVING AN INTEGRAL MOLDED FACING LAYER OF A COMPOSITION COMPRISING 50 TO 95% OF A GRANULAR SAND FILLER AND 50 TO 5% OF A CURED POLYMER, SAID CURED POLYMER BEING MADE FROM A CCURABLE COMPOSITION CONTAINING (1) A COPOLYMER OF 75 TO 85% OF BUTADIENE-1,3 CONTAINING AT LEAST 30% OF ITS UNSATURATION IN THE FORM OF SIDE VINYL GROUPS WITH 25 TO 15% OF STYRENE AND (2) UP TO 80% OF THE TOTAL POLYMERIZABLE MATERIAL PRESENT OF A VINYL SUBSTITUTED BENZENE HYDROCARBON, SAID PERCENTAGES OF FILLER AND CURED POLYMER BEING BASED ON THE TOTAL OF SAID FILLER AND SAID CURED POLYMER AND IN WHICH SAID SAND AND SAID CURED POLYMER ARE BONDED TO ONE ANOTHER BY A BONDING AGENT SELECTED FROM THE GROUP CONSISTING OF AN ETHYLENICALLY UNSATURATED SILANE, A WERNER-TYPE METHACRYLATO CHROMIC CHLORIDE COMPLEX, ALLYL SILICATE, BETA-METHALYL SILICATE, BETA-PHENYLALLYL SILICATE, AND BETA-CHLOROALLYL SILICATE.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |