US3854987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated structural units having improved physical properties
Assignee: HAYES KENTON R TRUSTEE UNDER TRUST AGREMENT F/B/O JOHN MICHAEL
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Filing: 1973-01-02
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Granted: 1974-12-17
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Expires: 1993-01-02
Abstract
Abstract The disclosure of this application is directed to structural units, as for example, structural units of concrete, wood, paper, bradish cloth and the like to be used in the construction, building and other like industries, which are coated with a composition based on an alkali metal silicate, a sodium tripolyphosphite wetting agent and a filler to provide structural units having improved ''''sealant'''' and fire-resistant characteristics.
Inventors
- 👤 M Michael
- 👤 D Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:50
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B28/00; C04B28/24; C04B28/26; C04B41/45; C04B41/50; C04B41/5076; C04B41/5089; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
91 words
A STRUCTURAL UNIT OF CONCRETE OR CINDER BLOCK COATED WITH A COMPOSITON CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF AN ALKALI METAL SILICATE CONTAINING AT LEAST ABOUT 0.5 MOLES OF S PER MOLE NA2O, A FILLER AND A SODIUM TRIPOLYSPHOSPHITE WETTING AGENT WHEREIN SAID FILLER IS PRESENT IN AN AMOUNT OF ABOUT ONE TO ABOUT 100 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF SAID SILICATE AND SAID WETTING AGENT IS PRESENT IN AN AMOUNT OF ABOUT 0.5 TO ABOUT 10 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF SAID SILICATE.
Claim 2
Dependent Claim
91 words
A STRUCTURAL UNIT OF CONCRETE OR CINDER BLOCK COATED WITH A COMPOSITON CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF AN ALKALI METAL SILICATE CONTAINING AT LEAST ABOUT 0.5 MOLES OF S PER MOLE NA2O, A FILLER AND A SODIUM TRIPOLYSPHOSPHITE WETTING AGENT WHEREIN SAID FILLER IS PRESENT IN AN AMOUNT OF ABOUT ONE TO ABOUT 100 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF SAID SILICATE AND SAID WETTING AGENT IS PRESENT IN AN AMOUNT OF ABOUT 0.5 TO ABOUT 10 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF SAID SILICATE.
Claim 3
Dependent Claim
23 words
A structural unit as defined in claim 1 wherein the said silicate contains about 1.5 to about 3.75 moles SiO2 per mole Na2O.
Claim 4
Dependent Claim
16 words
A structural unit as defined in claim 1 wherein the filler of the composition is asbestos.
References Cited (Backward Citations)
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US1989833A
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US1942299A
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US2449346A
Cited
US2756159A
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US3180746A
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US3511692A
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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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |