US3136726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-resistant hydraulic fluid and lubricant
Assignee: Douglas Aircraft Co Inc
•
Filing: 1957-06-28
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Granted: 1964-06-09
•
Expires: 1977-06-28
Abstract
No abstract record available.
Inventors
- 👤 Douglas H Moreton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:46
CPC Classifications
C; C10; C10M; C10M3/00; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2211/00; C10M2211/02; C10M2211/024; C10M2211/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE FIRE-RESISTANT HYDRAULIC FLUID AND LUBRICANT CONSISTING ESSENTIALLY OF A MIXTURE OF FROM 20 TO 80 PERCENT OF TRIARYL PHOSPHATE IN WHICH THE ARYL RADICALS HAVE FROM 6 TO 8 CARBON ATOMS AND A TOTAL OF 19 TO 24 CARBON ATOMS AND FROM 80 TO 20 PERCENT CHLORINATED BIPHENYL HAVING A COMBINED CHLORINE CONTENT OF FROM 40 TO 55 PERCENT, AND FROM 0.2 TO 10 PERCENT OF POLY ALKYL METHACRYLATE IN WHICH THE ALKYL RADICAL HAS FROM 2 TO 18 CARBON ATOMS AND HAVING A MOLECULAR WEIGHT RANGE WITHIN THE RANGE OF ABOUT 2,000 TO 20,000 AND AN AVERAGE MOLECULAR WEIGHT OF ABOUT 3,000 TO 15,000 COMPATIBLE WITH SAID MIXTURE AND EFFECTIVE TO INCREASE THE VISCOSITY INDES AND VISCOSITY AT 210*F. OF SAID MIXTURE.
Claim 2
Dependent Claim
124 words
THE FIRE-RESISTANT HYDRAULIC FLUID AND LUBRICANT CONSISTING ESSENTIALLY OF A MIXTURE OF FROM 20 TO 80 PERCENT OF TRIARYL PHOSPHATE IN WHICH THE ARYL RADICALS HAVE FROM 6 TO 8 CARBON ATOMS AND A TOTAL OF 19 TO 24 CARBON ATOMS AND FROM 80 TO 20 PERCENT CHLORINATED BIPHENYL HAVING A COMBINED CHLORINE CONTENT OF FROM 40 TO 55 PERCENT, AND FROM 0.2 TO 10 PERCENT OF POLY ALKYL METHACRYLATE IN WHICH THE ALKYL RADICAL HAS FROM 2 TO 18 CARBON ATOMS AND HAVING A MOLECULAR WEIGHT RANGE WITHIN THE RANGE OF ABOUT 2,000 TO 20,000 AND AN AVERAGE MOLECULAR WEIGHT OF ABOUT 3,000 TO 15,000 COMPATIBLE WITH SAID MIXTURE AND EFFECTIVE TO INCREASE THE VISCOSITY INDES AND VISCOSITY AT 210*F. OF SAID MIXTURE.
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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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |