US4425402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrillated polymeric films as reinforcement in manufactured articles based on hydraulic binders
Assignee: Montedison SpA
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Filing: 1982-02-16
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Granted: 1984-01-10
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Expires: 2002-02-16
Abstract
Abstract Fibrillated polymeric films, having a netlike structure, containing incorporated therein from 1 to 30% by weight of a car bonate of an alkaline-earth metal, are utilized as reinforcement in the manufacture of articles based on hydraulic binders.
Inventors
- 👤 Pierpaolo Camprincoli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:03
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/42; C; C04; C04B; C04B16/00; C04B16/04; C04B16/06; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/258; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T442/00; Y10T442/10; Y10T442/184
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
47 words
Manufactured articles based on hydraulic binders containing fibrillated films, or net-like flat structures, of at least one orientable film-forming synthetic polymer as reinforcement, said fibrillated films or net-like structures having incorporated therein from 1 to 30% by weight of at least one carbonate of an alkaline-earth metal.
Claim 2
Dependent Claim
47 words
Manufactured articles based on hydraulic binders containing fibrillated films, or net-like flat structures, of at least one orientable film-forming synthetic polymer as reinforcement, said fibrillated films or net-like structures having incorporated therein from 1 to 30% by weight of at least one carbonate of an alkaline-earth metal.
Claim 3
Dependent Claim
13 words
Manufactured articles according to claim 1, in which the synthetic polymer is polypropylene.
Claim 4
Dependent Claim
27 words
Manufactured articles according to claim 1, in which the synthetic polymer consists of a mixture of polypropylene with up to 20% by weight of low density polyethylene.
Claim 5
Dependent Claim
29 words
Manufactured articles according to claim 1, in which the carbonate of an alkaline-earth metal is selected from the group consisting of the carbonates of calcium, barium, strontium and magnesium.
References Cited (Backward Citations)
US3844865A
Cited
GB1582945A
Cited
US4297409A
Cited
US4344910A
Cited
US4265960A
Cited
US4348445A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |