US2564978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicellular glass and method of making
Assignee: Corning Glass Works
•
Filing: 1946-03-07
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Granted: 1951-08-21
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Expires: 1966-03-07
Abstract
No abstract record available.
Inventors
- 👤 Hyde James Franklin
- 👤 Stookey Stanley Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:03
CPC Classifications
C; C03; C03C; C03C11/00; C03C11/007
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
44 words
A BATCH FOR A MULTICELLULAR GLASS, WHICH CONSISTS OF AN INTIMATE MIXTURE OF A PULVERIZED SODA-LIME SILICATE GLASS AND 1.2% TO 4.8% BY WEIGHT OF A FINELY DIVIDED AMINO COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA, BIURET, THIOUREA, GUANIDINE, CYANURIC ACID, AND OXAMIDE.
References Cited (Backward Citations)
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GB460210A
Cited
US2322581A
Cited
US2310432A
Cited
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Cited
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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) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |