US PATENT SUBCLASS 436 / 60
LUBRICANT, GREASE, MINERAL OIL, HYDROCARBON OIL PRODUCT, OR FATS OR LIPIDS FOR OXIDATION (E.G., BREAKDOWN PRODUCTS OR CONTAMINATION, ETC.)

Current as of: June, 1999
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436 /   HD   CHEMISTRY: ANALYTICAL AND IMMUNOLOGICAL TESTING

60LUBRICANT, GREASE, MINERAL OIL, HYDROCARBON OIL PRODUCT, OR FATS OR LIPIDS FOR OXIDATION (E.G., BREAKDOWN PRODUCTS OR CONTAMINATION, ETC.) {1}
61  DF  .~> Acidity, basicity or neutralization number

DEFINITION

Classification: 436/60

LUBRICANT, GREASE, MINERAL OILS, HYDROCARBON OIL PRODUCT, OR FATS OR LIPIDS FOR OXIDATION (E.G., BREAKDOWN PRODUCTS OR CONTAMINATION, ETC.):

(under the class definition) Processes or compositions in which a lubricant, fat or oil is tested for oxidation products, for products of the breakdown of the fat or oil, or for contamination.

(1) Note. These tests include: amount of unsaturated acids in fats, oils or gasoline; refrigeration oil analysis; acid and base content; neutralization number; metal content; antioxidant effectiveness; detergency of lubricating oils; chemicals in oil; organic solvent tests; oxidation of fats or lipids.

SEE OR SEARCH CLASS

73, Measuring and Testing,

28.01+, for testing for solid matter entrained in a gas, subclasses 61.71+ for the testing of a liquid for sediment or foreign material content where more than a visual or photoelectric test of the color or the amount of visible radiant energy transmitted through or scattered by the liquid involved, and subclasses 53.05+ for lubricant testing.

116, Signals and Indicators,

206, for visual indicators, per se, where no color or other optical comparison test is involved and for level indicators of the mechanical type. 356, Optics: Measuring and Testing,

51, for tests of oil which may involve infrared radiation; subclass 70, for determining the physical properties of oil by the optical response produced by visible light transmitted though or reflected by the oil; subclass 128, for refraction test devices which may be applicable for testing of oil; subclasses 364+, for polarization test devices which may be applicable for testing of oil; subclass 402, for color test devices which may be applicable for the testing of oil.

432, for transmission test devices particularly particle suspension tests.

445, for reflection test devices which may be applicable to the testing of oil.

516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, appropriate subclasses for subject matter relating to: colloid systems (such as sols*, emulsions, dispersions, foams, aerosols, smokes, gels, or pastes) or wetting agents (such as leveling, penetrating, or spreading); subcombination compositions of colloid systems containing at least an agent specialized and designed for or peculiar to use in making or stabilizing colloid systems; compositions and subcombination compositions specialized and designed for or peculiar to use in breaking (resolving) or inhibiting colloid systems; processes of making the compositions or systems of the class; processes of breaking (resolving) or inhibiting colloid systems; in each instance, when generically claimed or there is no art class. Class 516 provides for compositions otherwise seemingly proper for

Class 436 when the compositions are colloid systems or wetting agents.