Patent US2673142A successfully refreshed from Google Patents.
US2673142A
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Electric heating element
Assignee: Blue Ridge Glass Corp
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Filing: 1949-04-15
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Granted: 1954-03-23
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Expires: 1969-04-15
Abstract
No abstract record available.
Inventors
- 👤 Theodore W Glynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:14
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/52; C04B41/80; C04B41/81; C04B41/89; H; H01; H01B; H01B1/00; H05; H05B; H05B3/00; H05B3/20; H05B3/22; H05B3/26; H05B3/265; H05B2203/00; H05B2203/013; H05B2203/017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE HEREINAFTER DESCRIBED METHOD OF MAKING A HEATING ELEMENT WHICH COMPRISES COATING THE SURFACE OF A CERAMIC PLATE WITH A METALLIC CONDUCTING COATING, PRINTING ON SUCH COATING THROUGH A SILK SCREEN A SELECTED DESIGN IN A MEDIUM COMPRISING A SILICONE VARNISH AND A FILLER OF NON-CONDUCTING INORGANIC COMPOUNDS OF GOOD HEAT STABILITY, BAKING THE PLATE WITH THE DESIGN THEREON AND REMOVING THE EXPOSED PORTIONS OF THE METALLIC COATING BY A SOLVENT INERT TO THE PRINTING MDEIUM.
Claim 2
Dependent Claim
76 words
THE HEREINAFTER DESCRIBED METHOD OF MAKING A HEATING ELEMENT WHICH COMPRISES COATING THE SURFACE OF A CERAMIC PLATE WITH A METALLIC CONDUCTING COATING, PRINTING ON SUCH COATING THROUGH A SILK SCREEN A SELECTED DESIGN IN A MEDIUM COMPRISING A SILICONE VARNISH AND A FILLER OF NON-CONDUCTING INORGANIC COMPOUNDS OF GOOD HEAT STABILITY, BAKING THE PLATE WITH THE DESIGN THEREON AND REMOVING THE EXPOSED PORTIONS OF THE METALLIC COATING BY A SOLVENT INERT TO THE PRINTING MDEIUM.
References Cited (Backward Citations)
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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) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |