US2582453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorbing glass and method of making same
Assignee: American Optical Corp
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Filing: 1948-07-02
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Granted: 1952-01-15
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Expires: 1968-07-02
Abstract
No abstract record available.
Inventors
- 👤 Alexis G Pincus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:09
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/11; C03C3/078; C03C4/00; C03C4/08; C03C4/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
THE METHOD OF MAKING ULTRA-VIOLET ABSORBING GLASS OF THE CHARACTER DESCRIBED COMPRISING FORMING A GLASS BATCH CONSISTING OF INGREDIENTS TO YIELD BY WEIGHT APPROXIMATELY 67 TO 70% SILICA, ABOUT 0.2 TO 1.2% VANADIUM PENTOXIDE, ABOUT 0.15% TO 0.45% OF MANGANESE DIOXIDE AND THE REMAINDER LIME, POTASH AND SODA, MELTING SAID BATCH UNDER OXIDIZING CONDITIONS AT A TEMPERATURE IN THE NEIGHBORHOOD OF 2500* F. AND SOAKING SAID MELT AT ABOUT 2200* F. TO PRODUCE IN THE RESULTANT GLASS AT A THICKNESS OF TWO MILLIMETERS A LIGHT AMETHYST COLOR AND A TRANSMISSION OF LESS THAN ABOUT 5% FOR ULTRA-VOILENT RADIATION OF WAVE LENGTH UP TO ABOUT 356 MILLIMICRONS, AND AN OVERALL TRANSMISSION IN THE VISIBLE REGION OF AT LEAST 75%.
Claim 2
Independent Claim
118 words
THE METHOD OF MAKING ULTRA-VIOLET ABSORBING GLASS OF THE CHARACTER DESCRIBED COMPRISING FORMING A GLASS BATCH CONSISTING OF INGREDIENTS TO YIELD BY WEIGHT APPROXIMATELY 67 TO 70% SILICA, ABOUT 0.2 TO 1.2% VANADIUM PENTOXIDE, ABOUT 0.15% TO 0.45% OF MANGANESE DIOXIDE AND THE REMAINDER LIME, POTASH AND SODA, MELTING SAID BATCH UNDER OXIDIZING CONDITIONS AT A TEMPERATURE IN THE NEIGHBORHOOD OF 2500* F. AND SOAKING SAID MELT AT ABOUT 2200* F. TO PRODUCE IN THE RESULTANT GLASS AT A THICKNESS OF TWO MILLIMETERS A LIGHT AMETHYST COLOR AND A TRANSMISSION OF LESS THAN ABOUT 5% FOR ULTRA-VOILENT RADIATION OF WAVE LENGTH UP TO ABOUT 356 MILLIMICRONS, AND AN OVERALL TRANSMISSION IN THE VISIBLE REGION OF AT LEAST 75%.
References Cited (Backward Citations)
US1292148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |