US2552495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making glass and batch therefor
Assignee: OI Glass Inc
•
Filing: 1947-09-20
•
Granted: 1951-05-08
•
Expires: 1967-09-20
Abstract
No abstract record available.
Inventors
- 👤 James P Poole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:37
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/11; C03C3/112
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF MAKING SODA LIME GLASS COMPRISING MIXING TOGETHER SAND OF MINUS 100 MESH PARTICLE SIZE, LIME OF 20 TO 40 MESH PARTICLE SIZE, ALKALI OF MINUS 140 MESH PARTICLE SIZE, ALUMINIA, A FLUORIDE AND FINING AGENTS WHICH ARE COLLECTIVELY OXIDIZING IN CHARACTER IN SUCH PROPORTIONS AS TO GIVE UPON MELTING GLASS HAVING AN ANALYSIS CALCULATED FROM THE CONSTITUENTS OF THE BATCH MIX TURE 68 TO 80% SIO2, 1.2 TO 4.0% R2O3, 2 TO 14% RO, 8.0 TO 15.5% ALKALI AND FLUORINE UP TO 1.2%, AND MELTING AND FINING THE BATCH MIXTURE TO FORM CLEAR GLASS.
Claim 2
Independent Claim
97 words
THE METHOD OF MAKING SODA LIME GLASS COMPRISING MIXING TOGETHER SAND OF MINUS 100 MESH PARTICLE SIZE, LIME OF 20 TO 40 MESH PARTICLE SIZE, ALKALI OF MINUS 140 MESH PARTICLE SIZE, ALUMINIA, A FLUORIDE AND FINING AGENTS WHICH ARE COLLECTIVELY OXIDIZING IN CHARACTER IN SUCH PROPORTIONS AS TO GIVE UPON MELTING GLASS HAVING AN ANALYSIS CALCULATED FROM THE CONSTITUENTS OF THE BATCH MIX TURE 68 TO 80% SIO2, 1.2 TO 4.0% R2O3, 2 TO 14% RO, 8.0 TO 15.5% ALKALI AND FLUORINE UP TO 1.2%, AND MELTING AND FINING THE BATCH MIXTURE TO FORM CLEAR GLASS.
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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) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |