US3328317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin bonded electrical resistor composition
Assignee: Airco Inc
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Filing: 1965-09-20
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Granted: 1967-06-27
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Expires: 1985-09-20
Abstract
No abstract record available.
Inventors
- 👤 Irvin J Mckeand
- 👤 James F Spring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:51
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; H01C; H01C7/00; H01C7/003; H01C7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN ELECTRICAL RESISTOR COMPOSITION CONSISTING ESSENTIALLY OR FROM 3% TO 15% BY WEIGHT OF COONDUCTANT PARTICLES SELECTED FROM THE GROUP CONSISTING OF CARBON PARTICLES AND PARTICLES OF AN AGGREAGATE OF CARBON AND RESIN, FROM 20% TO 30% INERT NON-CONDUCTIVE FILLER AND FROM 60% TO 75% RESIN BINDER, SAID BINDER CONSISTING ESSENTIALLY OF A MIXTURE OF PHENOL FORMALDEHYDE RESIN AND AN ALKYL-ARYL POLYSILOXANE IN THE PROPORTION OF FROM ONE TO FOUR PARTS BY WEIGHT OF PHENOL FORMALDEHYDE RESIN TO EACH PART OF SAID POLYSILOXANE.
Claim 2
Dependent Claim
83 words
AN ELECTRICAL RESISTOR COMPOSITION CONSISTING ESSENTIALLY OR FROM 3% TO 15% BY WEIGHT OF COONDUCTANT PARTICLES SELECTED FROM THE GROUP CONSISTING OF CARBON PARTICLES AND PARTICLES OF AN AGGREAGATE OF CARBON AND RESIN, FROM 20% TO 30% INERT NON-CONDUCTIVE FILLER AND FROM 60% TO 75% RESIN BINDER, SAID BINDER CONSISTING ESSENTIALLY OF A MIXTURE OF PHENOL FORMALDEHYDE RESIN AND AN ALKYL-ARYL POLYSILOXANE IN THE PROPORTION OF FROM ONE TO FOUR PARTS BY WEIGHT OF PHENOL FORMALDEHYDE RESIN TO EACH PART OF SAID POLYSILOXANE.
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |