Patent US5465481A successfully refreshed from Google Patents.
Patent US3145115A successfully refreshed from Google Patents.
US3145115A
Expired / Lapsed
US
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Infrared transmitting glasses
Assignee: Bausch and Lomb Inc
•
Filing: 1959-05-15
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Granted: 1964-08-18
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Expires: 1979-05-15
Abstract
No abstract record available.
Inventors
- 👤 Robert A Weidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:48
CPC Classifications
C; C03; C03C; C03C4/00; C03C4/10; C03C3/00; C03C3/04; C03C3/062; Y; Y10; Y10S; Y10S501/00; Y10S501/90; Y10S501/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
AN IRON-STABILIZED CALCIUM ALUMINATE GLASS FOR THE TRANSMISSION OF INFRARED RADIATION PRODUCED FROM THE OXIDES AND INGREDIENTS OF A RAW BATCH COMPOSITION CONSISTING ESSENTIALLY OF THE OXIDES OF CALCIUM, ALUMINUM, ALKALIS, AND MINOR QUANTITIES OF ALKALINE EARTH OXIDES, AND ALSO INCLUDING APPROXIMATELY ONE MOLE PERCENT OF IRON OXIDE IN THE FORM OF FEO1.5 AND 0.15 MOLE PERCENT OF COPPER OXIDE IN THE FORM OF CUO0.5.
Claim 2
Dependent Claim
65 words
AN IRON-STABILIZED CALCIUM ALUMINATE GLASS FOR THE TRANSMISSION OF INFRARED RADIATION PRODUCED FROM THE OXIDES AND INGREDIENTS OF A RAW BATCH COMPOSITION CONSISTING ESSENTIALLY OF THE OXIDES OF CALCIUM, ALUMINUM, ALKALIS, AND MINOR QUANTITIES OF ALKALINE EARTH OXIDES, AND ALSO INCLUDING APPROXIMATELY ONE MOLE PERCENT OF IRON OXIDE IN THE FORM OF FEO1.5 AND 0.15 MOLE PERCENT OF COPPER OXIDE IN THE FORM OF CUO0.5.
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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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |