US3582371A
Expired / Lapsed
US
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Beta-spodumene-anatase glass-ceramic article
Assignee: Corning Glass Works
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Filing: 1969-01-13
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Granted: 1971-06-01
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Expires: 1989-01-13
Abstract
Abstract THIS INVENTION RELATES TO GLASS-CERAMIC ARTICLES IN THE LI2O-MGO-AL2O3-SIO2 COMPOSITION SYSTEM NUCLEATED WITH TIO2 WHICH ARE HIGHLY RESISTANT TO FOOD STAINING BECAUSE ANY TIO2 CRYSTALLIZATION PRESENT CONSISTS ESSENTIALLY ENTIRELY OF ANATASE RATHER THAN RUTILE.
Inventors
- 👤 Adrian A Bruno
- 👤 Hermann L Rittler
- 👤 Maurice I Rosenfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:53
CPC Classifications
C; C03; C03C; C03C10/00; C03C10/0018; C03C10/0027; C03C10/0036; C03C10/0045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |