US PATENT SUBCLASS 436 / 2
PROCESS OR COMPOSITION FOR DETERMINATION OF PHYSICAL STATE OR PROPERTY BY MEANS INCLUDING A CHEMICAL REACTION

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

2PROCESS OR COMPOSITION FOR DETERMINATION OF PHYSICAL STATE OR PROPERTY BY MEANS INCLUDING A CHEMICAL REACTION {5}
3  DF  .~> Leak detection
4  DF  .~> Of crystal or crystalline material
5  DF  .~> Surface area, porosity, imperfection, or alteration
6  DF  .~> Corrosion resistance or power
7  DF  .~> By thermoparticulating composition

DEFINITION

Classification: 436/2

PROCESS OR COMPOSITION FOR DETERMINATION OF PHYSICAL STATE OR PROPERTY BY MEANS INCLUDING A CHEMICAL REACTION:

(under the class definition) Processes or compositions for determining physical state or a physical property by means of a chemical reaction.

(1) Note. Also included in this subclass are processes for determining the thickness of a coated material by means of a chemical reaction.

(2) Note. Processes for determining pressure by nonvolumetric techniques is included in this subclass, i.e., via flame ionization.

SEE OR SEARCH CLASS

156, Adhesive Bonding and Miscellaneous Chemical Manufacture,

64, for a process of surface bonding and/or assembly combined with a step of determining some chemical property of the product or a component thereof.

162, Paper Making and Fiber Liberation,

49, for a chemical test of a property or characteristic of a fiber or treating fluid when combined with a process of fiber liberation and subclass 198 for a process of chemically determining some property in combination with a paper making operation. 264, Plastic and Nonmetallic Articles Shaping or Treating: Processes,

40.1+, for a process of Class 264 shaping or treating which includes a step of chemical treating which includes a step of chemical testing or inspecting of the product or shaping surface including a determination of completeness of

reaction.

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.