US2676109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass
Assignee: American Optical Corp
•
Filing: 1950-12-22
•
Granted: 1954-04-20
•
Expires: 1970-12-22
Abstract
No abstract record available.
Inventors
- 👤 Barnes Robert Bowling
- 👤 Walter A Fraser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:55
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/86; H01J29/867; C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/102; C03C4/00; C03C4/08; C03C4/085; H01J29/863
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
AN ULTRA-VIOLET ABSORBING GLASS OF SUBSTANTIALLY NEUTRAL COLOR CONSISTING OF THE FUSED PRODUCT RESULTING FROM A BATCH MIX COMPRISING FROM 14 TO 20% ALKALI OXIDES, FROM ABOUT 60 TO 72% SILICA, FROM ABOUT 9 TO 11% LIME, AN AMOUNT RANGING APPROXIMATELY FROM ZERO TO .4% OF COPPER OXIDE AND AN AMOUNT OF ULTRA-VIOLET ABSORBING OXIDE FROM THE GROUP CONSISTING OF VANADIUM OXIDE, CERIUM OXIDE AND MIXTURES THEREOF, TOGETHER WITH AN AMOUNT OF COLORING OXIDE FROM THE GROUP CONSISTING OF MANGANESE OXIDE, NICKEL OXIDE, COBALT OXIDE AND MIXTURES THEROF SUCH AS TO PRODUCE WITH THE COPPER OXIDE TRANSMISSION CHARACTERISTICS FOR A THICKNESS OF ABOUT 6 MILLIMETERS OF SAID GLASS OF FROM 45 TO 70% AT 400 MILLIMICRONS 58 TO 76% AT 500 MILLIMICRONS, 50 TO 70% AT 600 MILLIMICRONS, 67 TO 80% AT 700 MILLIMICRONS AND LESS THAN 13%
Claim 2
Dependent Claim
138 words
AN ULTRA-VIOLET ABSORBING GLASS OF SUBSTANTIALLY NEUTRAL COLOR CONSISTING OF THE FUSED PRODUCT RESULTING FROM A BATCH MIX COMPRISING FROM 14 TO 20% ALKALI OXIDES, FROM ABOUT 60 TO 72% SILICA, FROM ABOUT 9 TO 11% LIME, AN AMOUNT RANGING APPROXIMATELY FROM ZERO TO .4% OF COPPER OXIDE AND AN AMOUNT OF ULTRA-VIOLET ABSORBING OXIDE FROM THE GROUP CONSISTING OF VANADIUM OXIDE, CERIUM OXIDE AND MIXTURES THEREOF, TOGETHER WITH AN AMOUNT OF COLORING OXIDE FROM THE GROUP CONSISTING OF MANGANESE OXIDE, NICKEL OXIDE, COBALT OXIDE AND MIXTURES THEROF SUCH AS TO PRODUCE WITH THE COPPER OXIDE TRANSMISSION CHARACTERISTICS FOR A THICKNESS OF ABOUT 6 MILLIMETERS OF SAID GLASS OF FROM 45 TO 70% AT 400 MILLIMICRONS 58 TO 76% AT 500 MILLIMICRONS, 50 TO 70% AT 600 MILLIMICRONS, 67 TO 80% AT 700 MILLIMICRONS AND LESS THAN 13%
References Cited (Backward Citations)
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US667646A
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US1292148A
Cited
US2143022A
Cited
US2219122A
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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) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |