§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US2713558A Expired / Lapsed US ⏱️ 0.0 years remaining

Lubricating compositions

Assignee: Shell Development Co
•
Filing: 1954-05-24
•
Granted: 1955-07-19
•
Expires: 1974-05-24
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Howard E Schmitz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 15:55
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/12; C10M135/14; C10M135/18; C10M2201/00; C10M2201/08; C10M2201/082; C10M2201/083; C10M2203/00; C10M2203/10; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/10; C10M2207/16; C10M2207/20; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2209/00; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/047; C10M2223/12; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/12

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 27 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR AMOUNT OF A MINERAL LUBRICATING OIL AND FROM ABOUT 0.1% TO ABOUT 10% OF AN OIL SOLUBLE DIVALENT SELENIUM DIHYDROCARBYL DITHIOCARBAMATE.
Claim 2
Dependent Claim 27 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR AMOUNT OF A MINERAL LUBRICATING OIL AND FROM ABOUT 0.1% TO ABOUT 10% OF AN OIL SOLUBLE DIVALENT SELENIUM DIHYDROCARBYL DITHIOCARBAMATE.

References Cited (Backward Citations)

US1622534A Cited
US2211798A Cited
US2367355A Cited
US2347128A Cited
US2450633A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1958-07-18 1959-01-17 1959-07-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1962-07-18 1963-01-17 1963-07-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1966-07-18 1967-01-17 1967-07-19 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag