US2676899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating foraminous metal with vitreous enamel
Assignee: Kaiser Metal Products Inc
•
Filing: 1951-04-04
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Granted: 1954-04-27
•
Expires: 1971-04-04
Abstract
No abstract record available.
Inventors
- 👤 Sherlock D Hackley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:48
CPC Classifications
C; C23; C23D; C23D5/00; C23D5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
THE METHOD OF PRODCING A SHEET OF FORAMINOUS METAL COVERED WITH A CONTINOUS COATING A VITREOUS ENAMEL WHICH COMPRISES IMMERSING THE FORAMINOUS METAL SHEET IN A VITREOUS ENAMEL SLIP OF FUSIBLE GLASS CONSTITUENTS AND APPROXIMATELY 20%, BY WEIGHT OF WATER, WITHDRAWING THE SHEET WITH A COATING OF THE SLIP MATERIAL THEREON, THE FORAMENS OF THE SHEET BEING OF SUCH SIZE THAT A CONTINUOUS COATING OF THE SLIP EXTENDS ACROSS EACH OF THE FORAMENS OF THE WITHDRAWN SHEET AND THE THICKNESS OF THE COATING OF THE SLIP MATERIAL IN THE FORAMENS IN SUCH THAT, AFTER FUSING, IT IS OF LESS THICKNESS THAN THE OVER-ALL THICKNESS OF THE SHEET, SUBSTANTIALLY IMMEDIATELY AFTER THE SHEET HAS BEEN WITHDRAWN FROM THE SLIP, AND BEFORE THE SLIP COATING HAS BECOME DRY, SUBJECTING THE COATED SHEET TO A SUFFICIENTLY HIGH TEMPERATURE FOR A SUFFICIENT LENGTH OF TIME TO FUSE THE COATING, AND COOLING THE COATED SHEET WHILE THE COATING STILL EXTENDS ACROSS THE FORAMENS THEREOF SO THAT THE FILM OF MATERIAL IN ALL OF THE FORAMENS REMAINS CONTINUOUS.
Claim 2
Independent Claim
172 words
THE METHOD OF PRODCING A SHEET OF FORAMINOUS METAL COVERED WITH A CONTINOUS COATING A VITREOUS ENAMEL WHICH COMPRISES IMMERSING THE FORAMINOUS METAL SHEET IN A VITREOUS ENAMEL SLIP OF FUSIBLE GLASS CONSTITUENTS AND APPROXIMATELY 20%, BY WEIGHT OF WATER, WITHDRAWING THE SHEET WITH A COATING OF THE SLIP MATERIAL THEREON, THE FORAMENS OF THE SHEET BEING OF SUCH SIZE THAT A CONTINUOUS COATING OF THE SLIP EXTENDS ACROSS EACH OF THE FORAMENS OF THE WITHDRAWN SHEET AND THE THICKNESS OF THE COATING OF THE SLIP MATERIAL IN THE FORAMENS IN SUCH THAT, AFTER FUSING, IT IS OF LESS THICKNESS THAN THE OVER-ALL THICKNESS OF THE SHEET, SUBSTANTIALLY IMMEDIATELY AFTER THE SHEET HAS BEEN WITHDRAWN FROM THE SLIP, AND BEFORE THE SLIP COATING HAS BECOME DRY, SUBJECTING THE COATED SHEET TO A SUFFICIENTLY HIGH TEMPERATURE FOR A SUFFICIENT LENGTH OF TIME TO FUSE THE COATING, AND COOLING THE COATED SHEET WHILE THE COATING STILL EXTENDS ACROSS THE FORAMENS THEREOF SO THAT THE FILM OF MATERIAL IN ALL OF THE FORAMENS REMAINS CONTINUOUS.
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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) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |