Patent US3249490A successfully refreshed from Google Patents.
US3249490A
Expired / Lapsed
US
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Laminated safety glass
Assignee: Monsanto Co
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Filing: 1965-05-17
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Granted: 1966-05-03
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Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Lavin Edward
- 👤 George E Mont
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:52
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10688; B32B17/10761; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
AN IMPROVED LAMINATED SAFETY-GLASS COMPRISING TWO LAYERS OF GLASS BONDED TO A PLASTICIZED POLYVINYL ACETAL INTERLAYER; SAID INTERLAYER HAVING A MOISTURE CONTENT OF 0.1 TO 0.8% BY WEIGHT AND CONTAINING SUFFICIENT METAL SALTS OF ACETIC ACID AND FORMIC ACID, TO PRODUCE AN ALKALINITY TITER OF 10 TO 50, SAID SALTS BEING A MIXTURE OF AT LEAST ONE METAL ACETATE AND AT LEAST ONE METAL FORMATE, WHEREIN THE METAL PORTIONIS INDEPENDENTLY SELECTED FROM THE GROUPS COMPRISING ALKALI METALS, ALKALINE EARTH METALS, AND METALS OF GROUPS I-B, II-B AND III-A OF THE PERIODIC TABLE, SAID MIXTURE CONTAINING SUFFICIENT METAL ACETATE TO PRODUCE ANALKALINITY TITER OF AT LEAST ABOUT 5 AND UP TO 80% OF THE TOTAL ALKALINITY TITER.
References Cited (Backward Citations)
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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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |