US3215543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitreous body including mica in finely divided state
Assignee: Compagnie de Saint Gobain SA
•
Filing: 1961-12-04
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Granted: 1965-11-02
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Bre Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:21
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/16; C03C3/17; C03C14/00; C03C14/004; C03C3/19; H; H01; H01B; H01B3/00; H01B3/02; H01B3/04; H01B3/08; H01B3/087; C03C2214/00; C03C2214/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A VITREOUS BODY COMPRISING MICA IN FINELY DIVIDED STATE IN A VITREOUS MATRIX MADE UP OF A GLASS CONSISTING ESSENTIALLY OF AT LEAST ONE OXIDE OF ALKALI METAL (R2O), SAID OXIDE OF ALKALI METAL CONTAINING AT LEAST ONE OF THE GROUP CONSISTING OF NA2O AND K2O AND OPTIONALLY LI2O IN AN AMOUNT NOT IN EXCESS OF 5% BY WEIGHT OF THE GLASS, AT LEAST ONE OXIDE OF DIVALENT METAL OF THE GROUP CONSISTING OF ZN, CA, MG, SR, CD, BA, (RO), PHOSPHORIC ANYDRIDE (P2O5), AND ALUMINA (AL2O3), SUCH CONSTITUENTS BEING PRESENT IN THE GLASS IN THE FOLLOWING MOLECULAR PERCENTAGES, D BEING THE MOLECULAR PERCENTAGE OF THE OXIDE OF DIVALENT METAL:
Claim 2
Dependent Claim
110 words
A VITREOUS BODY COMPRISING MICA IN FINELY DIVIDED STATE IN A VITREOUS MATRIX MADE UP OF A GLASS CONSISTING ESSENTIALLY OF AT LEAST ONE OXIDE OF ALKALI METAL (R2O), SAID OXIDE OF ALKALI METAL CONTAINING AT LEAST ONE OF THE GROUP CONSISTING OF NA2O AND K2O AND OPTIONALLY LI2O IN AN AMOUNT NOT IN EXCESS OF 5% BY WEIGHT OF THE GLASS, AT LEAST ONE OXIDE OF DIVALENT METAL OF THE GROUP CONSISTING OF ZN, CA, MG, SR, CD, BA, (RO), PHOSPHORIC ANYDRIDE (P2O5), AND ALUMINA (AL2O3), SUCH CONSTITUENTS BEING PRESENT IN THE GLASS IN THE FOLLOWING MOLECULAR PERCENTAGES, D BEING THE MOLECULAR PERCENTAGE OF THE OXIDE OF DIVALENT METAL:
References Cited (Backward Citations)
USRE15727E
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US2032239A
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US2227082A
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US2196974A
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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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |