Patent US3595720A successfully refreshed from Google Patents.
US3595720A
Expired / Lapsed
US
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Heating elements
Assignee: Imperial Chemical Industries Ltd
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Filing: 1967-10-09
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Granted: 1971-07-27
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Expires: 1987-10-09
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF AN ELECTRIC HEATING ELEMENT COMPRISING APPLYING TO A COATING OF AN ELECTRICALLY CONDUCTING SILICONE ELASTOMER COATED ON AT LEASE ONE SIDE OF A LAMINA SELECTED FROM THE GROUP CONSISTING OF WOVEN, KNITTED, FELTED FABRICS AND FILM AT LEAST TOW ELECTRODES COATED WITH AN ELECTRICALLY CONDUCTING ACRYLIC ADHESIVE AND APPLYING PRESSURE WHEREBY SAID ELECTRODES BECOME FIRMLY ATTACHED TO THE SAID COATING, SAID ELECTRODES BEING SELECTED FROM METAL FOIL, GUAZE, BRAID AND WIRE APPLIED TO THE COATING ON THE SAME SIDE OF THE LAMINA.
Inventors
- 👤 Jack Ames
- 👤 Thomas Gilmour Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:25
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/56; H01; H01B; H01B1/00; H01B1/20; H01B1/22; H01B1/24; H05B3/02; H05B3/06; H05B3/20; H05B3/22; H05B3/26; H05B3/565
Claims Analysis
Total Claims: 0
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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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |