Patent US3583930A successfully refreshed from Google Patents.
US3583930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastics made conductive with coarse metal fillers
Assignee: Chomerics Inc
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Filing: 1968-04-16
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Granted: 1971-06-08
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Expires: 1988-04-16
Abstract
Abstract THIS INVENTION PERTAINS TO METAL FILLED ELECTRICALLY CONDUCTIVE PLASTICS IN THE FORM OF GASKETS, CAULKING COMPOUNDS OR SEALS USEFUL FOR WAVEGUIDE ASSEMBLIES, WEATHERTIGHT R.F. (RADIO FREQUENCY) ENCLOSURES AND THE LIKE. IT IS MORE PARTICULARLY CONCERNED WITH ELECTRICALLY CONDUCTIVE SEALS BASED ON A COMPRESSIBLE PLASTIC FILLED OR LOADED WITH A COARSE METAL POWDER OF SELECT SIZE, SHAPE AND SURFACE AREA. THE THUS FILLED PLASTIC IS USED TO FORM A JOINT OR CLOSURE SEAL THAT IS BOTH ELECTRICALLY AND HERMETICALLY TIGHT.
Inventors
- 👤 John E Ehrreich
- 👤 Donald H Avery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:11
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/20; H01B1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |