US2573200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass for embedding zinc sulfide phosphors
Assignee: Westinghouse Electric Corp
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Filing: 1949-06-29
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Granted: 1951-10-30
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Expires: 1969-06-29
Abstract
No abstract record available.
Inventors
- 👤 Walter J Hushley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:20
CPC Classifications
C; C03; C03C; C03C14/00; C03C14/004; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/066; C03C8/00; C03C8/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
55 words
A GLASS COMPOSED ESSENTIALLY OF FROM 60 TO 85% BY WEIGHT OF B2O3, FROM 10 TO 20% BY WEIGHT OF SIO2, FROM 3 TO 10% OF ZNO, AND AT LEAST ONE ALKALI METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METAL OXIDES AND HALIDES ANF IN SUFFICENT QUANTITY TO MAKE SAID GLASS TRANSPARENT.
References Cited (Backward Citations)
FR582407A
Cited
US2393449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |