US3301786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic ferroelectric articles
Assignee: Union Oil Company of California
•
Filing: 1962-05-07
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Granted: 1967-01-31
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Expires: 1982-05-07
Abstract
No abstract record available.
Inventors
- 👤 Donald L Klass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:48
CPC Classifications
H; H04; H04R; H04R17/00; H04R17/005; H01; H01G; H01G7/00; H01G7/02; H01G7/028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A FERROELECTRIC ARTICLE CONSISTING ESSENTIALLY OF A SOLIDIFIED COMPOSITION OF PARTICULATE SOLIDS DISPERSED IN A VEHICLE AND EXHIBITING ELECTRIC CHARGES OF OPPOSITE SIGN AT OPPOSITE SURFACES THEREOF, SAID COMPOSITION CONSISTING ESSENTIALLY OF: (A) FROM ABOUT 10-60 PERCENT BY VOLUME OF SOLID PARTICLES OF SILANOL SILICA, SAID PARTICLES HAVING AN AVERAGE PARTICLE SIZE IN THE RANGE OF ABOUT 0.1 TO 10 MICRONS DIAMETER, AND (B) THE REMAINDER BEING A VEHICLE SELECTED FROM THE GROUP CONSISTING OF PARAFFIN WAX, MICROCRYSTALLINE WAX, POLYETHYLENE, POLYPROPYLENE, POLYSTYRENE AND POLYBUTADIENE, SAID VEHICLE BEING FURTHER CHARACTERIZED AS BEING A SOLID HAVING A RESISTIVITY OF NOT LESS THAN ABOUT 10**12 OHMS PER CUBIC CENTIMETER, A DIELECTRIC CONSTANT NOT IN EXCESS OF ABOUT 15, AN ASTM PENETRATION NOT IN EXCESS OF ABOUT 15 AT 77* F., AND BEING CAPABLE OF FLUIDITY AT THE TIME SAID SOLID PARTICLES ARE DISPERSED THEREIN.
Claim 2
Dependent Claim
141 words
A FERROELECTRIC ARTICLE CONSISTING ESSENTIALLY OF A SOLIDIFIED COMPOSITION OF PARTICULATE SOLIDS DISPERSED IN A VEHICLE AND EXHIBITING ELECTRIC CHARGES OF OPPOSITE SIGN AT OPPOSITE SURFACES THEREOF, SAID COMPOSITION CONSISTING ESSENTIALLY OF: (A) FROM ABOUT 10-60 PERCENT BY VOLUME OF SOLID PARTICLES OF SILANOL SILICA, SAID PARTICLES HAVING AN AVERAGE PARTICLE SIZE IN THE RANGE OF ABOUT 0.1 TO 10 MICRONS DIAMETER, AND (B) THE REMAINDER BEING A VEHICLE SELECTED FROM THE GROUP CONSISTING OF PARAFFIN WAX, MICROCRYSTALLINE WAX, POLYETHYLENE, POLYPROPYLENE, POLYSTYRENE AND POLYBUTADIENE, SAID VEHICLE BEING FURTHER CHARACTERIZED AS BEING A SOLID HAVING A RESISTIVITY OF NOT LESS THAN ABOUT 10**12 OHMS PER CUBIC CENTIMETER, A DIELECTRIC CONSTANT NOT IN EXCESS OF ABOUT 15, AN ASTM PENETRATION NOT IN EXCESS OF ABOUT 15 AT 77* F., AND BEING CAPABLE OF FLUIDITY AT THE TIME SAID SOLID PARTICLES ARE DISPERSED THEREIN.
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |