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US2597018A Expired / Lapsed US ⏱️ 0.0 years remaining

Lubricant

Assignee: Individual
•
Filing: 1948-05-18
•
Granted: 1952-05-20
•
Expires: 1968-05-18
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Abstract

No abstract record available.

Inventors

  • 👤 Robert L Merker
  • 👤 Curtis R Singleterry

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 03:49
CPC Classifications
C; C10; C10M; C10M115/00; C10M115/08; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/14; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/108; C10M2215/00; C10M2215/22; C10M2215/225; C10M2215/227; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/108; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/02

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 31 words
A THICKENED LUBRICATING COMPOSITION COMPRISING A LUBRICATING OIL AND UP TO ABOUT 45% BY WEIGHT OF A PHTHALOCYANINE DISPERSED THEREIN IN A PROPORTION SUFFICIENT TO CAUSE GEL FORMATION IN THE OIL.
Claim 2
Dependent Claim 31 words
A THICKENED LUBRICATING COMPOSITION COMPRISING A LUBRICATING OIL AND UP TO ABOUT 45% BY WEIGHT OF A PHTHALOCYANINE DISPERSED THEREIN IN A PROPORTION SUFFICIENT TO CAUSE GEL FORMATION IN THE OIL.

References Cited (Backward Citations)

US1659149A Cited
US1937463A Cited
US1996391A Cited
GB517475A Cited
US2361009A Cited
US2388887A Cited
US2390943A Cited
US2476952A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1955-05-20 1955-11-19 1956-05-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1959-05-20 1959-11-19 1960-05-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1963-05-20 1963-11-19 1964-05-20 $7700.00 Window Closed / Lapsed

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