US3358362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an electrical resistor
Assignee: International Resistance Co
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Filing: 1965-01-21
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Granted: 1967-12-19
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Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 David E Mcelroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:53
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/28; C; C21; C21C; C21C7/00; H01C1/00; H01C1/02; H01C1/034; H01C1/14; H01C1/142; H01C1/146; H01C1/148; H01C7/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069; Y10T29/49082; Y10T29/49099; Y10T29/49101; Y10T29/49787; Y10T29/49789; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A METHOD OF MAKING ELECTRICAL RESISTORS COMPRISING THE STEPS OF: COATING THE SURFACE OF EACH OF A PLURALITY OF ELONGATED, CYLINDRICAL CERAMIC RODS WITH A FILM OF AN ELECTRICAL RESISTANCE MATERIAL; ARRANGING SAID COATED RODS IN CLOSELY SPACED PARALLEL RELATION; ENCAPSULATING SAID COATED RODS IN A BLOCK OF A PLASTIC MATERIAL; CUTTING THROUGH SAID BLOCK AND THE COATED RODS AT LONGITUDINALLY SPACED POINTS ALONG PLANES PERPENDICULAR TO THE LONGITUDINAL AXES OF SAID RODS TO FORM A PLURALITY OF WAFERS, EACH OF WHICH CONTAINS A PLURALITY OF COATED SUBSTRATES; REMOVING FROM THE SURFACE OF EACH OF SAID WAFERS A LAYER OF THE PLASTIC TO EXPOSE A PORTION OF THE RESISTANCE MATERIAL FILM AT EACH END OF EACH OF SAID SUBSTRATES; SIMULTANEOUSLY COATING THE EXPOSED SURFACES OF THE SUBSTRATES AND THE RESISTANCE MATERIAL FILMS OF EACH OF SAID WAFERS WITH A FILM OF AN ELECTRICALLY CONDUCTIVE METAL; THEN COATING EACH OF SAID METAL FILMS WITH A LAYER OF AN ELECTRICALLY CONDUCTIVE SOLDER; AND THEN SEPARATING SAID COATED SUBSTRATE FROM THE PLASTIC OF ITS RESPECTIVE WAFERS.
Claim 2
Independent Claim
173 words
A METHOD OF MAKING ELECTRICAL RESISTORS COMPRISING THE STEPS OF: COATING THE SURFACE OF EACH OF A PLURALITY OF ELONGATED, CYLINDRICAL CERAMIC RODS WITH A FILM OF AN ELECTRICAL RESISTANCE MATERIAL; ARRANGING SAID COATED RODS IN CLOSELY SPACED PARALLEL RELATION; ENCAPSULATING SAID COATED RODS IN A BLOCK OF A PLASTIC MATERIAL; CUTTING THROUGH SAID BLOCK AND THE COATED RODS AT LONGITUDINALLY SPACED POINTS ALONG PLANES PERPENDICULAR TO THE LONGITUDINAL AXES OF SAID RODS TO FORM A PLURALITY OF WAFERS, EACH OF WHICH CONTAINS A PLURALITY OF COATED SUBSTRATES; REMOVING FROM THE SURFACE OF EACH OF SAID WAFERS A LAYER OF THE PLASTIC TO EXPOSE A PORTION OF THE RESISTANCE MATERIAL FILM AT EACH END OF EACH OF SAID SUBSTRATES; SIMULTANEOUSLY COATING THE EXPOSED SURFACES OF THE SUBSTRATES AND THE RESISTANCE MATERIAL FILMS OF EACH OF SAID WAFERS WITH A FILM OF AN ELECTRICALLY CONDUCTIVE METAL; THEN COATING EACH OF SAID METAL FILMS WITH A LAYER OF AN ELECTRICALLY CONDUCTIVE SOLDER; AND THEN SEPARATING SAID COATED SUBSTRATE FROM THE PLASTIC OF ITS RESPECTIVE WAFERS.
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) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |