US3406111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer oil
Assignee: Sunoco Inc
•
Filing: 1962-07-12
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Granted: 1968-10-15
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Expires: 1982-07-12
Abstract
No abstract record available.
Inventors
- 👤 Wynkoop Raymond
- 👤 Jr Shirley C Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:48
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/20; C09; C09K; C09K3/00; C09K3/14; C09K3/1454; H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01B3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A TRANSFORMER OIL COMPRISING A NAPHTHENIC PETROLEUM DISTILLATE BOILING IN THE RANGE OF 460-775*F. HAVING A VISCOSITY IN THE RANGE OF 50-65 S.U.S. AT 100*F., A VISCOSITY-GRAVITY CONSTANT IN THE RANGE OF 0.84-0.92 AND A NITROGEN CONTENT LESS THAN 4 P.P.M. AND, WHEN TESTED UNDER BOBLE OXIDATION TEST CONDITIONS IN THE ABSENCE OF AN ADDED INHIBITOR, EXIBITING THE FOLLOWING CHARACTERISTICS: (1) A NEUTRALIZATION NUMBER LESS THAN 0.2K MG. KOH/G. AT 96 HOURS OXIDATION TIME; (2) ABSENCE OF SLUDGE AT 96 HOURS OXIDATION TIME; AND (3) POWER FACTORS
Claim 2
Dependent Claim
87 words
A TRANSFORMER OIL COMPRISING A NAPHTHENIC PETROLEUM DISTILLATE BOILING IN THE RANGE OF 460-775*F. HAVING A VISCOSITY IN THE RANGE OF 50-65 S.U.S. AT 100*F., A VISCOSITY-GRAVITY CONSTANT IN THE RANGE OF 0.84-0.92 AND A NITROGEN CONTENT LESS THAN 4 P.P.M. AND, WHEN TESTED UNDER BOBLE OXIDATION TEST CONDITIONS IN THE ABSENCE OF AN ADDED INHIBITOR, EXIBITING THE FOLLOWING CHARACTERISTICS: (1) A NEUTRALIZATION NUMBER LESS THAN 0.2K MG. KOH/G. AT 96 HOURS OXIDATION TIME; (2) ABSENCE OF SLUDGE AT 96 HOURS OXIDATION TIME; AND (3) POWER FACTORS
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) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |