← Back to Patent Explorer
US3687852A Expired / Lapsed US ⏱️ 0.0 years remaining

Automatic transmission fluid and method

Assignee: Texaco Inc
•
Filing: 1970-12-17
•
Granted: 1972-08-29
•
Expires: 1990-12-17
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract AUTOMATIC TRANSMISSION FLUID COMPOSITION COMPRISING AT LEAST 86 WEIGHT PERCENT OF A MINERAL LUBRICATING OIL, FROM 0.1 TO 5 WEIGHT PERCENT OF AN ASHLESS DISPERSANT AND FROM 0.01 TO 5 WEIGHT PERCENT OF A SUBSTITUTED ASPARTAMIDE REPRESENTED BY THE FORMULA: IN WHICH X AND Y ALTERNATELY REPRESENT HYDROGEN AND THE RADICAL R''R"N-, R AND R'' EACH REPRESENT AN ALIPHATIC HYDROCARBON RADICAL HAVING FROM ABOUT 1 TO 30 CARBON ATOMS, AND R" IS HYDROGEN OR AN ALIPHATIC HYDROCARBON RADICAL HAVING 1 TO 30 CARBON ATOMS AND A METHOD OF OPERATING AN AUTOMATIC TRANSMISSION HAVING FRICTION SENSITIVE POWER TRANSMITTING MEANS ON A COMPOSITION COMPRISING A MINERAL OIL AND THE ABOVE-DESCRIBED SUBSTITUTED ASPARTAMIDE. HOOC-CH(-X)-CH(-Y)-CO-N(-R)-R"

Inventors

  • 👤 Arthur William Godfrey
  • 👤 Peter Dorn
  • 👤 Wheeler C Crawford

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 05:51
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/10; C10M2203/108; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/22; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/12; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/024; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/08

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-08-29 1976-02-28 1976-08-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-08-29 1980-02-28 1980-08-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-08-29 1984-02-28 1984-08-29 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag