.~ Affecting flow by the addition of material or energy
DEFINITION
Classification: 137/13
(under subclass 1) Processes in which the flow of fluent material is facilitated by the addition of material which affects the flow characteristics of the fluent material, or by the application of heat or other forms of energy.
SEE OR SEARCH THIS CLASS, SUBCLASS:
3, for processes of mixing plural fluids with automatic control.
88+, for automatic mixture condition maintaining by the addition of materials, etc.
334+, for fluid handling means combined with heating means, and see the search notes thereto.
565.01+, for distribution systems comprising pumps, and see the search notes thereto.
803+, for a pure fluid device or system capable of performing the process of this subclass (13). SEE OR SEARCH CLASS
208, Mineral Oils: Processes and Products,
370, for miscellaneous treatments of mineral oils during
transportation.
507, Earth Boring, Well Treating, and Oil Field Chemistry,
90, for compositions for preventing contaminant deposits in petroleum oil conduits and methods of preventing such deposits involving no significant manipulative steps.
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 when there is no hierarchically superior provision in the USPC for the specifically claimed art.
520, Synthetic Resins or Natural Rubbers, appropriate subclasses, particularly Class 523,
175, for a composition containing a synthetic resin or natural rubber having utility related to improving drag reduction formation or systems which are effective for reducing the dynamic drag of a turbulent fluid in contact with a surface or to processes of preparing said composition.
