US3847633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Building material for modular construction
Assignee: MARINO L
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Filing: 1972-04-10
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Granted: 1974-11-12
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Expires: 1992-04-10
Abstract
Abstract A lightweight building material having a density in the range of 26 pounds per cubic foot which is moldable so as to be useful in forming prefabricated interior wall panels and the like, to be assembled into a room at a construction site. The material is inorganic and includes lightweight aggregate, Portland cement and a property-enhancing mixture of vermiculite and sodium silicate.
Inventors
- 👤 A Race
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:57
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S106/00; Y10S106/01; Y10S106/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
131 words
AN IMPROVED BUILDING MATERIAL WHICH IS MOLDABLE TO PROVIDE MEMBERS ADAPTED FOR ASSEMBLY AT A CONSTRUCTION SITE AND INCLUDES PORTLAND CEMENT AND LIGHTWEIGHT PERLITE, AGGREGATE WHEREIN THE IMPROVEMENT COMPRISES SAID MATERIAL: BEING INORGANIC, FURTHER INCLUDING VERMICULITE, SOLUBLE SODIUM SILICATE, PLASTER OF PARIS, FLY ASH, AND SHORT STRANDS OF FIBERGLASS; CONSISTING ESSENTIALLY, IN WEIGHT PERCENT OF: BETWEEN ABOUT 40-55% PORTLAND CEMENT, BETWEEN ABOUT 11-7 PERCENT PLASTER OF PARIS, BETWEEN ABOUT 11-7% FLY ASH, BETWEEN ABOUT 6-4 PERCENT VERMICULITE, BETWEEN ABOUT 24-19 PERCENT PERLITE, ABOUT 5 PERCENT FIBERGLASS, AND ABOUT 3 PERCENT SODIUM SILICATE; AND BEING CHARACTERIZED AS: NON-TOXIC NON-FUMING AND FIRE-RETARDANT WHEN HEATED OR EXPOSED TO FLAMES, HAVING A DENSITY IN THE RANGE OF 26 POUNDS PER CUBIC FOOT, BEING MOLDABLE TO SHAPES INCLUDING INTERIOR WALL PANELS, AND ADAPTED FOR ON-SITE FABRICATION.
Claim 2
Dependent Claim
131 words
AN IMPROVED BUILDING MATERIAL WHICH IS MOLDABLE TO PROVIDE MEMBERS ADAPTED FOR ASSEMBLY AT A CONSTRUCTION SITE AND INCLUDES PORTLAND CEMENT AND LIGHTWEIGHT PERLITE, AGGREGATE WHEREIN THE IMPROVEMENT COMPRISES SAID MATERIAL: BEING INORGANIC, FURTHER INCLUDING VERMICULITE, SOLUBLE SODIUM SILICATE, PLASTER OF PARIS, FLY ASH, AND SHORT STRANDS OF FIBERGLASS; CONSISTING ESSENTIALLY, IN WEIGHT PERCENT OF: BETWEEN ABOUT 40-55% PORTLAND CEMENT, BETWEEN ABOUT 11-7 PERCENT PLASTER OF PARIS, BETWEEN ABOUT 11-7% FLY ASH, BETWEEN ABOUT 6-4 PERCENT VERMICULITE, BETWEEN ABOUT 24-19 PERCENT PERLITE, ABOUT 5 PERCENT FIBERGLASS, AND ABOUT 3 PERCENT SODIUM SILICATE; AND BEING CHARACTERIZED AS: NON-TOXIC NON-FUMING AND FIRE-RETARDANT WHEN HEATED OR EXPOSED TO FLAMES, HAVING A DENSITY IN THE RANGE OF 26 POUNDS PER CUBIC FOOT, BEING MOLDABLE TO SHAPES INCLUDING INTERIOR WALL PANELS, AND ADAPTED FOR ON-SITE FABRICATION.
Claim 3
Dependent Claim
105 words
A material as in claim 1 which consists essentially of: about 42 percent type III cement; about 10 percent plaster of paris; about 10 percent fly ash; about 2 percent fine ground vermiculite and about 4 percent vermiculite having a density of 7 pounds per cubic foot; about 14 percent expanded perlite having a density of 3 pounds per cubic foot; about 10 percent expanded perlite having a density of 7- 1/2 pounds per cubic foot; about 3 percent fiberglass strands having a length between 1-2 inches; about 2 percent fiberglass strands having a length less than 1 inch; and about 3 percent sodium silicate.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |