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US3715037A Expired / Lapsed US ⏱️ 0.0 years remaining

Novel lubricating oil system and oil filter for internal combustion engines

Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1968-12-16
•
Granted: 1973-02-06
•
Expires: 1988-12-16
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Abstract

Abstract A LUBRICATING OIL TREATMENT SYSTEM FOR INTERNAL COMBUSTION ENGINES INVOLVES THE CIRCULATION AND RECIRCULATION OF THE OIL FROM THE ENGINE THROUGH AN OIL FILTER AND THE RETURN OF THE FILTERED OIL TO THE ENGINE. THE NOVEL SYSTEM CONTAINS A FILTER CARTRIDGE WITHIN THE FILTER CHAMBER WHICH CARTRIDGE IS CHARGED WITH AT LEAST ONE RELATIVELY OIL-INSOLUBLE SOLID INORGANIC OR ORGANO-INORGANIC SIMPLE OR BINARY, OR COMPLEX OR TERNARY, COMPOUND CONTAINING A CHEMICALLY BOUND TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF METALS OF GROUPS I-B, II-B, III-B, IV-B, V-B, VI-B, VII-B AND VIII OF THE PERIODIC TABLE OF THE ELEMENTS. THE PASSAGE OF THE CIRCULATING OIL IN THE SYSTEM MAY BE, OPTIONALLY, THROUGH A CHAMBER IN THE SYSTEM WHICH IS AHEAD OF OR AFTER OIL FILTER, WHICH CHAMBER CONTAINS THE SOLID PARTICLES OF SUCH A COMPOUND OR MIXTURE OF COMPOUNDS RETAINED WITHIN THE CHAMBER AND IN PLACE OF OR IN ADDITION TO SUCH COMPOUNDS BEING PLACED WITHIN THE OIL FILTER.

Inventors

  • 👤 S Hu
  • 👤 J Geyer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 18:21
CPC Classifications
B; B01; B01D; B01D37/00; B01D37/02; B01D37/025; B01D35/00; B01D35/005; C; C10; C10M; C10M175/00; C10M175/0016; C10M175/0091; F; F01; F01M; F01M1/00; F01M1/10; F16; F16N; F16N39/00; C10M2203/00; C10M2203/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; F01M2001/1007; F01M2001/1014

Claims Analysis

Total Claims: 0
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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) 1976-02-06 1976-08-07 1977-02-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-02-06 1980-08-07 1981-02-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-02-06 1984-08-07 1985-02-06 $7700.00 Window Closed / Lapsed

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