US3281294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for etching glass
Assignee: Corning Glass Works
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Filing: 1965-06-08
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Granted: 1966-10-25
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Expires: 1985-06-08
Abstract
No abstract record available.
Inventors
- 👤 Francis W Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:27
CPC Classifications
C; C03; C03C; C03C15/00; C03C10/00; C03C10/0054; C03C8/00; C03C8/24; C03C8/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A METHOD FOR ETCHING GLASS SURFACE WHICH COMPRISES (A) COATING SELECTED AREAS OF THE GLASS TO BE ETCHED WITH A FRIT CONSISTING OF A SEALING GLASS WHICH, UPON BEING FUSED, PRECIPITATES A FINE-GRAINED CRYSTAL PHASEE UNIFORMLY DISPERSED IN A GLASSY MATRIX UPON SAID GLASS SURFACES, SAID SEALING GLASS BEING SELECTED FROM THE GROUP CONSISTING OF ZINC-BOROSILICATE GLASSES CONSISTING SIO2, AND 19-25% B203, AND LEAD-ZINC-BOROSILICATE GLASSES CONSISTING ESSENTIALLY, BY WEIGHT, OF ABOUT 71.5-80% PBO, 10-15% ZNO, 6.5-10% B2O3, AND 1-3% SIO2, (B) FUSING SAID FRIT AT A TEMPERATURE WHICH WILL AT LEAST MATURE AND DEVITRIFY SAID FRIT AND FOR A SUFFICIENT TIME TO PRODUCE THE REQUIRED DEPTH ETCH PATTERN BY PROODUCING A DEVITRIFIED GLAZE BONDED TO THE GLASS SURFACE, (C) COOLING THE GLAZED SURFACE REACTION PRODUCT, AND (D) THEREAFTER ESSENTIALLY COMPLETELY DISSOLVING SAID DEVITRIFIED GLAZE REACTION PRODUCT AND ANY OTHER REACTION PRODUCTS FORMED AT THE INTERFACE BETWEEN SAID DEVITRIFIED GLAZE AND THE GLASS SURFACE BY A SOLVENT SOLUTION THEREFOR TO DEVELOP AN ETCH PATTERN ON THE SURFACE OF THE GLASS.
Claim 2
Independent Claim
169 words
A METHOD FOR ETCHING GLASS SURFACE WHICH COMPRISES (A) COATING SELECTED AREAS OF THE GLASS TO BE ETCHED WITH A FRIT CONSISTING OF A SEALING GLASS WHICH, UPON BEING FUSED, PRECIPITATES A FINE-GRAINED CRYSTAL PHASEE UNIFORMLY DISPERSED IN A GLASSY MATRIX UPON SAID GLASS SURFACES, SAID SEALING GLASS BEING SELECTED FROM THE GROUP CONSISTING OF ZINC-BOROSILICATE GLASSES CONSISTING SIO2, AND 19-25% B203, AND LEAD-ZINC-BOROSILICATE GLASSES CONSISTING ESSENTIALLY, BY WEIGHT, OF ABOUT 71.5-80% PBO, 10-15% ZNO, 6.5-10% B2O3, AND 1-3% SIO2, (B) FUSING SAID FRIT AT A TEMPERATURE WHICH WILL AT LEAST MATURE AND DEVITRIFY SAID FRIT AND FOR A SUFFICIENT TIME TO PRODUCE THE REQUIRED DEPTH ETCH PATTERN BY PROODUCING A DEVITRIFIED GLAZE BONDED TO THE GLASS SURFACE, (C) COOLING THE GLAZED SURFACE REACTION PRODUCT, AND (D) THEREAFTER ESSENTIALLY COMPLETELY DISSOLVING SAID DEVITRIFIED GLAZE REACTION PRODUCT AND ANY OTHER REACTION PRODUCTS FORMED AT THE INTERFACE BETWEEN SAID DEVITRIFIED GLAZE AND THE GLASS SURFACE BY A SOLVENT SOLUTION THEREFOR TO DEVELOP AN ETCH PATTERN ON THE SURFACE OF THE GLASS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |