Patent US3149989A successfully refreshed from Google Patents.
US3149989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation-reflecting medium
Assignee: Corning Glass Works
•
Filing: 1961-12-01
•
Granted: 1964-09-22
•
Expires: 1981-12-01
Abstract
No abstract record available.
Inventors
- 👤 Harold C Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:03
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/08; G02B5/0816; G02B5/0825; G02B5/0833; F; F24; F24S; F24S80/00; F24S80/50; F24S80/52; Y; Y02; Y02E; Y02E10/00; Y02E10/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A RADIATION-REFLECTING MEDIUM COMPRISING A SUBSTANTIALLY TRANSPARENT GLASS SHEET HAVING THEREON TWO FILMS, ONE OF SAID FILMS COMPRISING A COMBINATION OF APPROXIMATELY 0.4-4.4% BY WEIGHT OF AN OXIDE OF ANTIMONY COMPUTED AS SB2O3 AND APPROXIMATELY 95.6-99.6% BY WEIGHT OF AN OXIDE OF TIN COMPUTED AS SNO2 AND THE OTHER OF SAID
Claim 2
Dependent Claim
51 words
A RADIATION-REFLECTING MEDIUM COMPRISING A SUBSTANTIALLY TRANSPARENT GLASS SHEET HAVING THEREON TWO FILMS, ONE OF SAID FILMS COMPRISING A COMBINATION OF APPROXIMATELY 0.4-4.4% BY WEIGHT OF AN OXIDE OF ANTIMONY COMPUTED AS SB2O3 AND APPROXIMATELY 95.6-99.6% BY WEIGHT OF AN OXIDE OF TIN COMPUTED AS SNO2 AND THE OTHER OF SAID
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |