Laminated safety glass
Abstract
Abstract A LAMINATED ARTICLE COMPRISING TWO SHEETS OF GLASS AND AN INNER SHEET DISPOSED THEREBETWEEN OF A SUBSTANTIALLY WATER INSOLUBLE ALKYL ETHER OF CELLULSOE SUCH AS ETHYL CELLULOSE OR AN ORGANIC ACID ESTER OF CELLULOSE SUCH AS CELLULOSE ACETATE IS PREPARED BY APPLYING AN ADHESIVE SUCH AS A LATEX OF A COPOLYMER OF ETHYLENE AND ACRYLIC ACID TO THE MATING SURFACES OF THE INNER SHEET AND THE GLASS SHEETS AND THEN BRINGING THE SHEETS TOGETHER AND APPLYING HEAT AND PRESSURE UNTIL A BOND IS FORMED BETWEEN THE SEVERAL SHEETS. IN AN ALTERNATIVE EMBODIMENT, ENERGY DISTRIBUTION SHEETS FABRICATED OF, FOR EXAMPLE, AN IONIC COPOLYMER ARE DISPOSED BETWEEN THE INNER SHEET OF ETHYL CELLULOSE OR CELLULOSE ACETATE AND THE GLASS SHEETS TO IMPROVED THE STRUCTURAL RIGIDITY OF THE ARTICLE.
Inventors
- 👤 Robert A De Lap
- 👤 Frank P Esch
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |