C
SECTION C — CHEMISTRY; METALLURGY
 C

Note(s)

In section C, the definitions of groups of chemical elements are as follows:

  • Alkali metals: Li, Na, K, Rb, Cs, Fr
  • Alkaline earth metals: Ca, Sr, Ba, Ra
  • Lanthanides: elements with atomic numbers 57 to 71 inclusive
  • Rare earths: Sc, Y, Lanthanides
  • Actinides: elements with atomic numbers 89 to 103 inclusive
  • Refractory metals: Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W
  • Halogens: F, Cl, Br, I, At
  • Noble gases: He, Ne, Ar, Kr, Xe, Rn
  • Platinum group: Os, Ir, Pt, Ru, Rh, Pd
  • Noble metals: Ag, Au, Platinum group
  • Light metals: alkali metals, alkaline earth metals, Be, Al, Mg
  • Heavy metals: metals other than light metals
  • Iron group: Fe, Co, Ni
  • Non-metals: H, B, C, Si, N, P, O, S, Se, Te, noble gases, halogens
  • Metals: elements other than non-metals
  • Transition elements: elements with atomic numbers 21 to 30 inclusive, 39 to 48 inclusive, 57 to 80 inclusive, 89 upwards

  
CHEMISTRY
 C12
BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
 C12

Note(s)

  1. In subclasses C12M to Q and within each of these subclasses, in the absence of an indication to the contrary, an invention is classified in the last appropriate place. [3]
  2. In this class, viruses, undifferentiated plant or animal cells, protozoa and unicellular algae are considered as micro-organisms. Also, sub-cellular parts, unless specifically provided for, are classified with the whole cell. [3]
  3. In this class, it is desirable to add, in conformity with paragraph 83 of the Guide, after the double oblique stroke, the indexing codes of subclass C12R (see Note (1) following the title of subclass C12R). [3]
 C12Q
MEASURING OR TESTING PROCESSES INVOLVING ENZYMES OR MICRO-ORGANISMS (immunoassay G01N 33/53); COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES  [4]
 C12Q

Note(s)

  1. This subclass does not cover inventions dealing with the observation of the progress or of the result of processes specified in this subclass by any of the methods specified in groups G01N 3/00-G01N 29/00, which are covered by subclass G01N[3]
  2. In this subclass, the following expression is used with the meaning indicated:  [3]
    • "involving", when used in relation to a substance, includes the testing for the substance as well as employing the substance as a determinant or reactant in a test for a different substance. [3]
  3. Attention is drawn to Note (1) following the title of class C12[3]
  4. In this subclass, test media are classified in the appropriate group for the relevant test process. [3]
 C12Q 1/00
Measuring or testing processes involving enzymes or micro-organisms (measuring or testing apparatus with condition measuring or sensing means, e.g. colony counters, C12M 1/34); Compositions therefor; Processes of preparing such compositions  [3]
 C12Q 1/02
·  involving viable micro-organisms  [3]
 C12Q 1/04
·  ·  Determining presence or kind of micro-organism; Use of selective media for testing antibiotics or bacteriocides; Compositions containing a chemical indicator therefor  [3]
 C12Q 1/06
·  ·  ·  Quantitative determination  [3]
 C12Q 1/08
·  ·  ·  ·  using multifield media  [3]
 C12Q 1/10
·  ·  ·  Enterobacteria  [3]
 C12Q 1/12
·  ·  ·  Nitrate to nitrite reducing bacteria  [3]
 C12Q 1/14
·  ·  ·  Streptococcus; Staphylococcus  [3]
 C12Q 1/16
·  ·  ·  using radioactive material  [3]
 C12Q 1/18
·  ·  Testing for antimicrobial activity of a material  [3]
 C12Q 1/20
·  ·  ·  using multifield media  [3]
 C12Q 1/22
·  ·  Testing for sterility conditions  [3]
 C12Q 1/24
·  ·  Methods of sampling, or inoculating or spreading a sample; Methods of physically isolating an intact micro-organism  [3]
 C12Q 1/26
·  involving oxidoreductase  [3]
 C12Q 1/28
·  ·  involving peroxidase  [3]
 C12Q 1/30
·  ·  involving catalase  [3]
 C12Q 1/32
·  ·  involving dehydrogenase  [3]
 C12Q 1/34
·  involving hydrolase  [3]
 C12Q 1/36
·  ·  involving peptidase  [3]
 C12Q 1/38
·  ·  involving proteinase  [3]
 C12Q 1/40
·  ·  involving amylase  [3]
 C12Q 1/42
·  ·  involving phosphatase  [3]
 C12Q 1/44
·  ·  involving esterase  [3]
 C12Q 1/46
·  ·  ·  involving cholinesterase  [3]
 C12Q 1/48
·  involving transferase  [3]
 C12Q 1/50
·  ·  involving creatine phosphokinase  [3]
 C12Q 1/52
·  ·  involving transaminase  [3]
 C12Q 1/54
·  involving glucose or galactose  [3]
 C12Q 1/56
·  involving blood clotting factors, e.g. involving thrombin, thromboplastin, fibrinogen  [3]
 C12Q 1/58
·  involving urea or urease  [3]
 C12Q 1/60
·  involving cholesterol  [3]
 C12Q 1/62
·  involving uric acid  [3]
 C12Q 1/64
·  Geomicrobiological testing, e.g. for petroleum  [3]
 C12Q 1/66
·  involving luciferase  [3]
 C12Q 1/68
·  involving nucleic acids  [3]
 C12Q 1/70
·  involving virus or bacteriophage  [3]
 C12Q 3/00
Condition-responsive control processes (apparatus therefor C12M 1/36; controlling or regulating in general G05)  [3]