Patent US3902912A successfully refreshed from Google Patents.
US3902912A
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Glass fiber reinforced cement
Assignee: Owens Corning
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Filing: 1974-05-22
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Granted: 1975-09-02
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Expires: 1994-05-22
Abstract
Abstract Alkali resistant, fiberizable glass compositions are disclosed. These compositions contain TiO2, La203 or CeO2. The glass fibers formed from these compositions are useful in the reinforcement of cementitious materials.
Inventors
- 👤 Warren W Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:29
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C13/00; C03C13/001; C03C3/076; C03C3/078; C03C3/095
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
33 words
A CEMENTITIOUS PROUCT COMPRISING A COMPOSITE OF REINFORCING MATERIALS AND A CALCIUM SILICATE CEMENTITIOUS MATRIX WHEREIN ONE OF SAID REINFORCING MATERIALS COMPRISES ALKALIRESISTANT, ZIRCONIA FREE GLASS FIBERS, SAID GLASS FIBES CONSISTING ESSNTIALLY OF:
Claim 2
Dependent Claim
33 words
A CEMENTITIOUS PROUCT COMPRISING A COMPOSITE OF REINFORCING MATERIALS AND A CALCIUM SILICATE CEMENTITIOUS MATRIX WHEREIN ONE OF SAID REINFORCING MATERIALS COMPRISES ALKALIRESISTANT, ZIRCONIA FREE GLASS FIBERS, SAID GLASS FIBES CONSISTING ESSNTIALLY OF:
Claim 3
Dependent Claim
13 words
The cementitious product of claim 1 wherein said cementitious matrix is Portland cement.
Claim 4
Dependent Claim
12 words
The cementitious product of claim 1 wherein said cementitious matrix is concrete.
Claim 5
Dependent Claim
12 words
The cementitious product of claim 1 wherein said cementitious matrix is mortar.
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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |