US3332790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultraviolet absorbing green glass
Assignee: Individual
•
Filing: 1964-02-06
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Granted: 1967-07-25
•
Expires: 1984-02-06
Abstract
No abstract record available.
Inventors
- 👤 Penberthy Harvey Larry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:27
CPC Classifications
C; C03; C03C; C03C1/00; C03C1/10; C03C4/00; C03C4/08; C03C4/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
AN EMERALD GREEN GLASS CONSISTING ESSENTIALLY OF SODA-LIME-SILICA GLASS CONTAINING BY WEIGHT ABOUT 0.10% TO 0.30% TOTAL CHROMIUM OXIDES EXPRESSED AS CR2O3 AND PRESENT AS BOTH TRIVALENT (CR2O3) AND HEXAVALENT (CRO3) CHROMIUM OXIDE, THE HEXAVALENT CHROMIUM OXIDE RANGING FROM ABOUT 0.0022% TO 0.005%, 0.025% TO 0.070, COPPER OXIDE (CU0), AND 0.0005% TO 0.0016% COBALT OXIDE.
Claim 2
Dependent Claim
55 words
AN EMERALD GREEN GLASS CONSISTING ESSENTIALLY OF SODA-LIME-SILICA GLASS CONTAINING BY WEIGHT ABOUT 0.10% TO 0.30% TOTAL CHROMIUM OXIDES EXPRESSED AS CR2O3 AND PRESENT AS BOTH TRIVALENT (CR2O3) AND HEXAVALENT (CRO3) CHROMIUM OXIDE, THE HEXAVALENT CHROMIUM OXIDE RANGING FROM ABOUT 0.0022% TO 0.005%, 0.025% TO 0.070, COPPER OXIDE (CU0), AND 0.0005% TO 0.0016% COBALT OXIDE.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |