US3329490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic deposition of parting materials in method of bending superposed glass sheets
Assignee: Shatterproof Glass Corp
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Filing: 1963-09-16
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Granted: 1967-07-04
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Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Jendrisak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:52
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; 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; B32B17/10807; B32B17/10889; B32B17/10981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A METHOD OF MAKING BENT LAMINATED GLASS PRODUCTS BY HEAT-SOFTENING TWO SHEETS OF GLASS SUPERPOSED ON A BENDING MOLD, THE STEPS OF ELECTROSTATICALLY CHARGING A SHEET OF GLASS TO BE SUPERPOSED FOR BENDING, DUSTING A SURFACE OF SAID CHARGED SHEET OF GLASS WITH FINELY-DIVIDED, SUBSTANTIALLY MOISTURE-FREE PARTICLES OF A HIGH MELTING POINT, WATER-SOLUBLE "PARTING" MATERIAL, BY PASSING A CURRENT OF AIR IN WHICH SAID PARTICLES ARE SUSPENDED OVER SAID CHARGED SHEET, WHEREBY SAID PARTICLES ARE ELECTRICALLY ATTRACTED TO THE SURFACE OF SAID SHEET, AND STACKING SAID SHEET WITH ANOTHER SHEET PRIOR TO HEAT-SOFTENING WHEREBY SAID DUSTED SURFACE FACES SAID OTHER SHEET.
Claim 2
Dependent Claim
102 words
IN A METHOD OF MAKING BENT LAMINATED GLASS PRODUCTS BY HEAT-SOFTENING TWO SHEETS OF GLASS SUPERPOSED ON A BENDING MOLD, THE STEPS OF ELECTROSTATICALLY CHARGING A SHEET OF GLASS TO BE SUPERPOSED FOR BENDING, DUSTING A SURFACE OF SAID CHARGED SHEET OF GLASS WITH FINELY-DIVIDED, SUBSTANTIALLY MOISTURE-FREE PARTICLES OF A HIGH MELTING POINT, WATER-SOLUBLE "PARTING" MATERIAL, BY PASSING A CURRENT OF AIR IN WHICH SAID PARTICLES ARE SUSPENDED OVER SAID CHARGED SHEET, WHEREBY SAID PARTICLES ARE ELECTRICALLY ATTRACTED TO THE SURFACE OF SAID SHEET, AND STACKING SAID SHEET WITH ANOTHER SHEET PRIOR TO HEAT-SOFTENING WHEREBY SAID DUSTED SURFACE FACES SAID OTHER SHEET.
References Cited (Backward Citations)
US2486153A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |