US3212929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a glass film on an object
Assignee: International Business Machines Corp
•
Filing: 1962-03-22
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Granted: 1965-10-19
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Expires: 1982-03-22
Abstract
No abstract record available.
Inventors
- 👤 William A Pliskin
- 👤 Ernest E Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:41
CPC Classifications
C; C23; C23D; C23D5/00; C23D5/02; C03; C03C; C03C17/00; C03C17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
THE METHOD OF FORMING A GLASS FILM ON THE PLANE SURFACE OF AN OBJECT COMPRISING: COVERING SAID OBJECT WITH A FIRST FLUID HAVING A DIELECTRIC CONSTANT LESS THAN 9; COVERING SAID FIRST FLUID WITH A SECOND FLUID HAVING A DIELECTRIC CONSTANT IN THE RANGE OF 6-33.6, A DENSITY LESS THAN THAT OF SAID FIRST FLUID, AND CONTAINING A SUSPENSION OF FINELY DIVIDED GLASS PARTICLES; CENTRIFUGING SAID OBJECT AND FLUIDS TO DEPOSIT SAID PARTICLES ON SAID SURFACE; SEPARATING SAID OBJECT FROM SAID FLUIDS; AND HEATING SAID OBJECT TO AT LEAST THE SOFTENING TEMPERATURE OF SAID PARTICLES FOR A TIME SUFFICIENT TO FUSE SAID PARTICLES AND PRODUCE A THIN UNIFORM HOLE-FREE GLASS FILM ON SAID SURFACE.
Claim 2
Independent Claim
114 words
THE METHOD OF FORMING A GLASS FILM ON THE PLANE SURFACE OF AN OBJECT COMPRISING: COVERING SAID OBJECT WITH A FIRST FLUID HAVING A DIELECTRIC CONSTANT LESS THAN 9; COVERING SAID FIRST FLUID WITH A SECOND FLUID HAVING A DIELECTRIC CONSTANT IN THE RANGE OF 6-33.6, A DENSITY LESS THAN THAT OF SAID FIRST FLUID, AND CONTAINING A SUSPENSION OF FINELY DIVIDED GLASS PARTICLES; CENTRIFUGING SAID OBJECT AND FLUIDS TO DEPOSIT SAID PARTICLES ON SAID SURFACE; SEPARATING SAID OBJECT FROM SAID FLUIDS; AND HEATING SAID OBJECT TO AT LEAST THE SOFTENING TEMPERATURE OF SAID PARTICLES FOR A TIME SUFFICIENT TO FUSE SAID PARTICLES AND PRODUCE A THIN UNIFORM HOLE-FREE GLASS FILM ON SAID SURFACE.
References Cited (Backward Citations)
US2119309A
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GB587741A
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US2589169A
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US2793137A
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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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |