Patent US3279607A successfully refreshed from Google Patents.
US3279607A
Expired / Lapsed
US
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Oil filter cartridge
Assignee: Individual
•
Filing: 1962-12-17
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Granted: 1966-10-18
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Expires: 1982-12-17
Abstract
No abstract record available.
Inventors
- 👤 Stanley T Michaelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:27
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/06; B01D29/00; B01D29/11; B01D29/13; B01D29/15; B01D29/21; B01D2201/00; B01D2201/04; B01D2201/0407; B01D2201/0461
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A DISPOSABLE OIL FILTER CARTRIDGE ASSEMBLY FOR USE IN AN INTERNAL COMBUSTION ENGINE, SAID CARTRIDGE COMPRISING: AN OUTER PERFORATED CYLINDRICAL CASING THROUGH WHICH OIL MAY PASS; AN ANNULAR, OIL PERMEABLE FILTER ELEMENT HAVING A CENTRAL PASSAGE WITHIN SAID CASING; AT LEAST ONE BAR OF A NON-FERROUS METAL REACTIVE WITH CORROSIVE INGREDIENTS IN THE OIL, SAID BAR BEING FIXED TO AND LONGITUDINALLY COEXTENSIVE WITH THE FILTER ELEMENT AND MAINTAINED IN FIXED ASSEMBLED POSITION
Claim 2
Dependent Claim
72 words
A DISPOSABLE OIL FILTER CARTRIDGE ASSEMBLY FOR USE IN AN INTERNAL COMBUSTION ENGINE, SAID CARTRIDGE COMPRISING: AN OUTER PERFORATED CYLINDRICAL CASING THROUGH WHICH OIL MAY PASS; AN ANNULAR, OIL PERMEABLE FILTER ELEMENT HAVING A CENTRAL PASSAGE WITHIN SAID CASING; AT LEAST ONE BAR OF A NON-FERROUS METAL REACTIVE WITH CORROSIVE INGREDIENTS IN THE OIL, SAID BAR BEING FIXED TO AND LONGITUDINALLY COEXTENSIVE WITH THE FILTER ELEMENT AND MAINTAINED IN FIXED ASSEMBLED POSITION
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |