Patent US4053677A successfully refreshed from Google Patents.
US4053677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light concrete monolithic slab
Assignee: Individual
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Filing: 1975-04-17
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Granted: 1977-10-11
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Expires: 1995-04-17
Abstract
Abstract A monolithic slab manufactured from light, generally foamy concrete between two layers of reinforced concrete, having smooth, or alternatively corrugated, exterior surfaces, to suit the particular utilization requirements thereof.
Inventors
- 👤 Manuel J. Corao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:05
CPC Classifications
B; B32; B32B; B32B13/00; B32B13/04; B32B13/045; B32B13/02; B32B3/00; B32B3/26; B32B3/28; B32B7/00; B32B7/04; B32B7/12; E; E04; E04C; E04C2/00; E04C2/02; E04C2/04; E04C2/049; B32B2305/00; B32B2305/38; B32B2419/00; C; C04; C04B; C04B2111/00; C04B2111/00474; C04B2111/00612; Y; Y10; Y10T; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/109; Y10T442/128
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
110 words
A building slab comprising: a first layer of solid, lightweight, foamed concrete, said first layer having first and second surfaces; a second layer of regular weight concrete coextensive with said first surface, disposed on said first surface, and having a thickness substantially less than said first layer; metal reinforcing members embedded in said second layer; a third layer of regular weight concrete coextensive with said second surface, disposed on said second surface, and having a thickness substantially less than said first layer; and an adhesive film composed of a mixture of granite, cement, and glass fibers interspersed between said first and second layers and between said first and third layers.
Claim 2
Dependent Claim
110 words
A building slab comprising: a first layer of solid, lightweight, foamed concrete, said first layer having first and second surfaces; a second layer of regular weight concrete coextensive with said first surface, disposed on said first surface, and having a thickness substantially less than said first layer; metal reinforcing members embedded in said second layer; a third layer of regular weight concrete coextensive with said second surface, disposed on said second surface, and having a thickness substantially less than said first layer; and an adhesive film composed of a mixture of granite, cement, and glass fibers interspersed between said first and second layers and between said first and third layers.
Claim 3
Dependent Claim
14 words
The slab of claim 1 wherein glass fibers are interspersed in said third layer.
Claim 4
Dependent Claim
17 words
The slab of claim 1 wherein said first layer is concrete mixed with a resin-bathed plastic filler.
Claim 5
Dependent Claim
14 words
A building slab of claim 1 wherein said metal reinforcing members are metal bars.
Claim 6
Dependent Claim
16 words
A building slab of claim 1 wherein said metal reinforcing members are a wire mesh network.
Claim 7
Dependent Claim
16 words
The building slab of claim 1 wherein said metal reinforcing members are metallic members under tension.
Claim 8
Dependent Claim
46 words
The building slab of claim 1 wherein said second and third layers are a mixture of silicous and quartz sand, Portland cement in a proportion five-to-two, and water mixed with an emulsified synthetic resin in the proportion of approximately one part resin to twenty parts water.
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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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |