US2642633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soft glass and composite article
Assignee: Corning Glass Works
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Filing: 1950-02-01
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Granted: 1953-06-23
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Expires: 1970-02-01
Abstract
No abstract record available.
Inventors
- 👤 Robert H Dalton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:15
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/044; B; B01; B01J; B01J13/00; B01J13/0086; C01; C01B; C01B33/00; C01B33/20; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49055; Y10T29/49057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A TRANSPARENT GLASS COMPOSITION WHICH CONSISTS A APPROXIMATELY 75% PHO, 11% B2O3, 11% AL2O3, AND 3% SIO2.
Claim 2
Dependent Claim
91 words
A DOUBLE WINDOW PANE COMPRISING TWO SHEETS OF SODA LIME GLASS, THE FACES OF WHICH ARE IN OPPOSED RELATIONSHIP AND ARE SPACED FROM EACH OTHER BY A PLURALITY OF UPSTANDING GLASS RIBS WHICH FORM A PART OF ONE SHEET AND ARE JOINED TO THE SECOND SHEET BY A INTEGRAL LAYER OF SOFT GLASS CONSISTING OF APPROXIMATELY 75% PHO, 11% B2O3, 11% AL2O3 AND 3% SIO2, THE EXPANSION COEFFICIENT OF THE SODA LIME GLASS BEING UP TO 15X10-7 PER *C. HIGHER THAN THAT OF THE SOFT GLASS BETWEEN O* AND 300* C.
References Cited (Backward Citations)
US1793039A
Cited
US2032003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |