US2725320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing bent laminated glass sheets
Assignee: PPG Industries Inc
•
Filing: 1953-02-05
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Granted: 1955-11-29
•
Expires: 1973-02-05
Abstract
No abstract record available.
Inventors
- 👤 Florian V Atkeson
- 👤 James S Golightly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:29
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/025; C03B23/027; A; A47; A47L; A47L13/00; A47L13/10; A47L13/40; B; B29; B29C; B29C53/00; B29C53/02; B29C53/04; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/10009; B32B17/10036; B32B17/1055; B32B17/10761; B32B17/10807; B32B17/10889; B32B17/10899; B32B17/10926; B32B17/10981; C03B23/0258; B29L; B29L2009/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN A METHOD OF FORMING HEAT BENT LAMINATED GLASS SHEETS PREPARATORY TO LAMINATING SAID SHEETS TO OPPOSITE SIDES OF AN INTERLAYER OF THERMOPLASTIC LAMINATING MATERIAL, THE STEPS OF SPRAYING A LIGHT UNIFORM COATING OF A LIQUID SUSPENSION OF A FINELY DIVIDED REFRACTORY MATERIAL, THAT WILL OPTICALLY UNITE WITH THE THERMOPLASTIC LAMINATING MATERIAL, ON THE INNER FACE OF AT LEAST ONE OF A PAIR OF FLAT GLASS SHEETS PRIOR TO BENDING, AND APPLYING THE PLASTIC INTERLAYER BETWEEN THE BENT GLASS SHEETS WITHOUT PREVIOUS REMOVAL OF THE FINELY DIVIDED REFRACTORY MATERIAL.
Claim 2
Dependent Claim
89 words
IN A METHOD OF FORMING HEAT BENT LAMINATED GLASS SHEETS PREPARATORY TO LAMINATING SAID SHEETS TO OPPOSITE SIDES OF AN INTERLAYER OF THERMOPLASTIC LAMINATING MATERIAL, THE STEPS OF SPRAYING A LIGHT UNIFORM COATING OF A LIQUID SUSPENSION OF A FINELY DIVIDED REFRACTORY MATERIAL, THAT WILL OPTICALLY UNITE WITH THE THERMOPLASTIC LAMINATING MATERIAL, ON THE INNER FACE OF AT LEAST ONE OF A PAIR OF FLAT GLASS SHEETS PRIOR TO BENDING, AND APPLYING THE PLASTIC INTERLAYER BETWEEN THE BENT GLASS SHEETS WITHOUT PREVIOUS REMOVAL OF THE FINELY DIVIDED REFRACTORY MATERIAL.
References Cited (Backward Citations)
US2357537A
Cited
US2392770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |