US3081202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making non-metallic electric resistance elements
Assignee: Hunting Mhoglas Ltd
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Filing: 1960-04-25
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Granted: 1963-03-12
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Expires: 1980-04-25
Abstract
No abstract record available.
Inventors
- 👤 Kemp Allan John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:19
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/0652; C; C03; C03C; C03C25/00; C03C25/10; C03C25/42; C03C25/44; H01B; H01B1/00; H01B1/20; H01B1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE METHOD OF MANUFACTURING NON-METALLIC ELECTRIC RESISTANCE HEATING ELEMENTS WHICH COMPRISES COATING CLEAN INORGANIC FIBROUS MATERIAL WITH LIQUID DISPERSION OF COLLOIDAL GRAPHITE, DRYING, AND HEATING TO REMOVE IMPURITIES, IMPREGNATING THE COATED FIBROUS MATERIAL WITH A DILUTE LIQUID DISPERSION OF SILICONE RESIN CONTAINING ABOUT 0.1% SOLIDS AND TO THE EXTENT THAT THERE IS SUBSTANTIALLY NO INCREASE IN ELECTRICAL RESISTANCE OF THE COATED FIBROUS MATERIAL ON FURTHER APPLICATION OF THE DILUTE RESIN DISPERSION, APPLYING A COATING OF A MORE CONCENTRATED CILICONE RESIN DISPERSION CONTAINING ABOUT 60% SOLIDS AND DRYING.
Claim 2
Independent Claim
87 words
THE METHOD OF MANUFACTURING NON-METALLIC ELECTRIC RESISTANCE HEATING ELEMENTS WHICH COMPRISES COATING CLEAN INORGANIC FIBROUS MATERIAL WITH LIQUID DISPERSION OF COLLOIDAL GRAPHITE, DRYING, AND HEATING TO REMOVE IMPURITIES, IMPREGNATING THE COATED FIBROUS MATERIAL WITH A DILUTE LIQUID DISPERSION OF SILICONE RESIN CONTAINING ABOUT 0.1% SOLIDS AND TO THE EXTENT THAT THERE IS SUBSTANTIALLY NO INCREASE IN ELECTRICAL RESISTANCE OF THE COATED FIBROUS MATERIAL ON FURTHER APPLICATION OF THE DILUTE RESIN DISPERSION, APPLYING A COATING OF A MORE CONCENTRATED CILICONE RESIN DISPERSION CONTAINING ABOUT 60% SOLIDS AND DRYING.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |