US3003350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of examining oil samples
Assignee: RALPH L FABER
•
Filing: 1960-12-08
•
Granted: 1961-10-10
•
Expires: 1980-12-08
Abstract
No abstract record available.
Inventors
- 👤 Stewart Minnette Claire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:46
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/04; G01N15/042; G01N33/00; G01N33/26; G01N33/28; G01N33/2888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
THE METHOD OF EXAMINING ENGINE OILS FROM RAILROAD, STATIONARY, MARINE AND SIMILAR DIESEL ENGINES TO DETECT ENGINE DEPOSITION, COMPRISING ADDING TO AN OIL SAMPLE A THINNER AND A COAGULANT CONSISTING ESSENTIALLY OF N-BUTYL DIETHANOLAMINE, CENTRIFUGING TO PRECIPITATE SOLIDS, AND THEN INVERTING THE CENTRIFUGE AND ITS CONTENTS, THE FAILURE OF THE PRECIPITATED SOLIDS TO FALL OUT OF THE TUBE INDICATING THAT ENGINE DEPOSITION IS OCCURRING.
Claim 2
Independent Claim
64 words
THE METHOD OF EXAMINING ENGINE OILS FROM RAILROAD, STATIONARY, MARINE AND SIMILAR DIESEL ENGINES TO DETECT ENGINE DEPOSITION, COMPRISING ADDING TO AN OIL SAMPLE A THINNER AND A COAGULANT CONSISTING ESSENTIALLY OF N-BUTYL DIETHANOLAMINE, CENTRIFUGING TO PRECIPITATE SOLIDS, AND THEN INVERTING THE CENTRIFUGE AND ITS CONTENTS, THE FAILURE OF THE PRECIPITATED SOLIDS TO FALL OUT OF THE TUBE INDICATING THAT ENGINE DEPOSITION IS OCCURRING.
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) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |