US3090705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impregnated paper to serve as a dielectric, especially in condensers to improve their critical performance
Assignee: TERVAKOSKI OSAKEYHTIO
•
Filing: 1959-01-15
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Granted: 1963-05-21
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Expires: 1979-01-15
Abstract
No abstract record available.
Inventors
- 👤 Miksits Reinhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:23
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/48; H01B3/485; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A DIELECTRIC PAPER MATERIAL HAVING AN IMPROVED POWDER FACTOR IN THE TEMPERATURE RANGE BETWEEN 60 AND 120* C., SAID MATERIAL CONSISTING ESSENTIALLY OF: (A) A PAPER BASE; (B) AN ACTIVE SUBSTANCE INCORPORATED IN SAID PAPER AND SELECTED FROM THE GROUP CONSISTING OF ACTIVATED HYDROXIDES, OXIDES AND HYDRATED OXIDES OF MAGNESIUM, ALUMINUMM, SILICON AND TITANIUM, BENTONITE, AND SILLICATES OF ALUMINUM, WHICH SUBSTANCE PRESENTS A LARGE SURFACE AREA AND HAS PREDOMINANTLY COLLOIDAL PARTICLE SIZES AVERAGING 0.5 MICRON AND LESS, (C) MINERAL OIL AS IMPREGNANT CAPABLE OF RENDERING THE PAPER BASE DIELECTRIC AND (D) IMPURITIES INITIALLY CONTAINED IN SAID IMPREGNANT AND CAPABLE PER SE OF CAUSING ENERGY LOSS IN SAID DIELECTRIC MATERIAL, SAID IMPURITIES BEING BOUND BY SAID ACTIVE SUBSTANCE, WHEREBY THEIR LOSS ACUSING EFFECT IS SUBSTANTIALLY REDUCED.
Claim 2
Dependent Claim
125 words
A DIELECTRIC PAPER MATERIAL HAVING AN IMPROVED POWDER FACTOR IN THE TEMPERATURE RANGE BETWEEN 60 AND 120* C., SAID MATERIAL CONSISTING ESSENTIALLY OF: (A) A PAPER BASE; (B) AN ACTIVE SUBSTANCE INCORPORATED IN SAID PAPER AND SELECTED FROM THE GROUP CONSISTING OF ACTIVATED HYDROXIDES, OXIDES AND HYDRATED OXIDES OF MAGNESIUM, ALUMINUMM, SILICON AND TITANIUM, BENTONITE, AND SILLICATES OF ALUMINUM, WHICH SUBSTANCE PRESENTS A LARGE SURFACE AREA AND HAS PREDOMINANTLY COLLOIDAL PARTICLE SIZES AVERAGING 0.5 MICRON AND LESS, (C) MINERAL OIL AS IMPREGNANT CAPABLE OF RENDERING THE PAPER BASE DIELECTRIC AND (D) IMPURITIES INITIALLY CONTAINED IN SAID IMPREGNANT AND CAPABLE PER SE OF CAUSING ENERGY LOSS IN SAID DIELECTRIC MATERIAL, SAID IMPURITIES BEING BOUND BY SAID ACTIVE SUBSTANCE, WHEREBY THEIR LOSS ACUSING EFFECT IS SUBSTANTIALLY REDUCED.
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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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |