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US2528391A
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US
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Methods of improving the durability of glass containers
Assignee: Individual
•
Filing: 1948-04-27
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Granted: 1950-10-31
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Expires: 1968-04-27
Abstract
No abstract record available.
Inventors
- 👤 Seddon Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:03
CPC Classifications
C; C03; C03C; C03C21/00; C03C21/007; C03C15/00; C03C23/00; C03C23/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A METHOD OF IMPROVING THE DURABILITY OF GLASS CONTAINERS WHICH COMPRISES INTRODUCING A PELLETED MIXTURE OF AMMONIUM SULPHATE WITH AMMONIUM CHLORIDE INTO THE CONTAINER AND EFFECTING A DECOMPOSITION THEREIN OF SAID MIXTURE, THE MIXTURE CONTAINING 90 TO 97 PER CENT OF AMMONIUM SULPHATE.
Claim 2
Independent Claim
43 words
A METHOD OF IMPROVING THE DURABILITY OF GLASS CONTAINERS WHICH COMPRISES INTRODUCING A PELLETED MIXTURE OF AMMONIUM SULPHATE WITH AMMONIUM CHLORIDE INTO THE CONTAINER AND EFFECTING A DECOMPOSITION THEREIN OF SAID MIXTURE, THE MIXTURE CONTAINING 90 TO 97 PER CENT OF AMMONIUM SULPHATE.
References Cited (Backward Citations)
US1760427A
Cited
US2081401A
Cited
US2053066A
Cited
US2175076A
Cited
US2184320A
Cited
US2436771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |