Patent US2974052A successfully refreshed from Google Patents.
US2974052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultraviolet light absorbing glass
Assignee: OI Glass Inc
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Filing: 1960-07-11
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Granted: 1961-03-07
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Frank R Bacon
- 👤 Carroll J Billian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:44
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/226; C; C03; C03C; C03C1/00; C03C1/10; C03C3/00; C03C3/04; C03C3/076; C03C3/078; C03C3/083; C03C3/085; C03C3/087; C03C3/089; C03C3/091; C03C4/00; C03C4/08; C03C4/085; G02B5/208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
AN ULTRAVIOLET RADIATION ABSORBING GREEN GLASS COMPOSITION COMPRISING ESSENTIALLY BY WEIGHT 60 TO 75% SIO2, 0.1 TO 9.5% AL2O3, 6 TO 12% CAO, 0 TO 6% MGO, 0 TO 1% BAO, 0 TO 5% B2O3, 10 TO 21% ALKALI METAL OXIDES, INCLUDING LESS THAN ABOUT 0.3% FE2O3, AND LESS THAN ABOUT 0.3% TOTAL CHROMIUM OXIDES PRESENT AS BOTH TRIVALENT CHROMIUM OXIDE (CR2O3) AND HEXAVALENT CHROMIUM OXIDE (CRO3), THE LATTER RANGING FROM ABVOUT 0.005 TO 0.070%.
Claim 2
Dependent Claim
75 words
AN ULTRAVIOLET RADIATION ABSORBING GREEN GLASS COMPOSITION COMPRISING ESSENTIALLY BY WEIGHT 60 TO 75% SIO2, 0.1 TO 9.5% AL2O3, 6 TO 12% CAO, 0 TO 6% MGO, 0 TO 1% BAO, 0 TO 5% B2O3, 10 TO 21% ALKALI METAL OXIDES, INCLUDING LESS THAN ABOUT 0.3% FE2O3, AND LESS THAN ABOUT 0.3% TOTAL CHROMIUM OXIDES PRESENT AS BOTH TRIVALENT CHROMIUM OXIDE (CR2O3) AND HEXAVALENT CHROMIUM OXIDE (CRO3), THE LATTER RANGING FROM ABVOUT 0.005 TO 0.070%.
References Cited (Backward Citations)
US2699399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |