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Code Block
languagexml
<classification-ipc>
  <edition>7</edition>
  <main-classification>C03Cclassification mxw-id="PCL163366969" load-source="docdb">C04B  1028/10<14</main-classification>
  <further-classification>A61C  13/083</further-classification>
  <further-classification>C03B  32/02</further-classification>
  <further-classification>C03C  10/08</further-classification>
  <further-classification>C03C  10/04</further-classification>-classification mxw-id="PCL163294003" load-source="docdb">C09K   3/18</further-classification>
  <additional-info mxw-id="PCL750202757" load-source="docdb">C04B  38/10</additional-info>
  <linked-indexing-code-group group="J">
    <main-linked-indexing-code mxw-id="PCL163299823" load-source="docdb">C04B  28/14</main-linked-indexing-code>
    <sub-linked-indexing-code mxw-id="PCL1106709533" load-source="docdb">C04B  24:26</sub-linked-indexing-code>
    <sub-linked-indexing-code mxw-id="PCL163417459" load-source="docdb">C04B  24:42</sub-linked-indexing-code>
  </linked-indexing-code-group>
  <linked-indexing-code-group group="K">
    <main-linked-indexing-code mxw-id="PCL1106715491" load-source="docdb">C04B  28/14</main-linked-indexing-code>
    <sub-linked-indexing-code mxw-id="PCL163379057" load-source="docdb">C04B  24:12</sub-linked-indexing-code>
    <sub-linked-indexing-code mxw-id="PCL163388853" load-source="docdb">C04B  24:26</sub-linked-indexing-code>
    <sub-linked-indexing-code mxw-id="PCL163385607" load-source="docdb">C04B  24:42</sub-linked-indexing-code>
  </linked-indexing-code-group>
  <unlinked-indexing-code mxw-id="PCL163364197" load-source="docdb">C04B 111/27</unlinked-indexing-code>
</classification-ipc>

 


These are the international classifications at the time of publication for documents published before IPCR went into effect (pre-2006).

Element

INID

Description

edition

51

Effective dates: 
        7: 2000-2006 
        6: 1995-1999 
        5: 1990-1994 
        4: 1985-1989 
        3: 1980-1984 
        2: 7/1974-1979 
        1: 9/1969-6/1974

main-classification

51

Format for all IPC is space-filled to 4-characters at main group: ANNA^^nn/n[...]. See XML example above.

further-classification

51

Further/secondary classification. Same format as main-classification.

additional-info

51

Additional information

linked-indexing-code-group

51

Indexing codes are used in association with classification symbols to provide technical information. Their format is similar to classification symbols, but they employ a colon in place of the slash. For example: ANNAnnnn:n[...]. Linked indexing codes show which classification symbols the indexing code is associated with. See Review of the Hybrid Systems in the IPC for more information.

unlinked-indexing-code

51

Unlinked indexing codes are similar to linked indexing codes, but are not linked to an associated classification symbol.

text

51

Not populated

technical-data/classification-ipc/linked-indexing-code-group

AttributeDescription
groupLetter designation that identifies a linked indexing code group


ElementDescription
main-linked-indexing-codeMain/primary linked indexing code
sub-linked-indexing-codeSub/further linked indexing code

technical-data/classifications-ipcr

Code Block
languagexml
<classifications-ipcr>
  <classification-ipcr load-source="docdb">E02B 3/12   20060101AFI20100519BHCN</classification-ipcr>
  <classification-ipcr load-source="docdb">E02D 17/20   20100101CLI20100519BHCN</classification-ipcr>
  <classification-ipcr load-source="docdb">E02D 17/20   20060101ALI20100519BHCN</classification-ipcr>
  <classification-ipcr load-source="docdb">E02D 15/00   20060101ALI20100519BHCN</classification-ipcr>
  </classification-ipcr>
</classifications-ipcr>

...

Code Block
languagexml
<classification-locarno>
  <main-classification load-source="patent-office">0202</main-classification>
</classification-locarno>

...


US Design only and those prepared for issue after June 30, 1996 include Locarno International Classification.
...
 Code Block
languagexml
<classifications-cpc>
  <classification-cpc mxw-id="PCL-1437171692" load-source="docdb" scheme="CPC">C12Q 1/6869 20130101 FI20190308BHEP</classification-cpc>
  <classification-cpc mxw-id="PCL-1437187236" load-source="docdb" scheme="CPC">G16B 30/20 20190201 LI20190308BHEP</classification-cpc>
  <classification-cpc mxw-id="PCL-1437187457" load-source="docdb" scheme="CPC">C12Q 1/6827 20130101 LI20190308BHEP</classification-cpc>
  <combination-sets>
    <combination-set group="1" load-source="docdb">
      <classification-cpc rank="1" mxw-id="PCL-1437182516" load-source="docdb" scheme="CPC">C12Q 1/6869 20130101 LI20190308BHEP</classification-cpc>
      <classification-cpc rank="2" mxw-id="PCL-1437183463" load-source="docdb" scheme="CPC">C12Q2535/122 20130101 LA20190308BHEP</classification-cpc>
      <classification-cpc rank="3" mxw-id="PCL-1437166528" load-source="docdb" scheme="CPC">C12Q2537/165 20130101 LA20190308BHEP</classification-cpc>
    </combination-set>
    <combination-set group="2" load-source="docdb">
      <classification-cpc rank="1" mxw-id="PCL-1437169247" load-source="docdb" scheme="CPC">C12Q 1/6827 20130101 LI20190308BHEP</classification-cpc>
      <classification-cpc rank="2" mxw-id="PCL1987075595PCL-1437199121" load-source="docdb" scheme="CPC">C12N2760>C12Q2535/16121122 20130101 LA20130101BHEP<LA20190308BHEP</classification-cpc>
      <classification-cpc rank="3" mxw-id="PCL1987079213PCL-1437200085" load-source="docdb" scheme="CPC">C12N2760>C12Q2537/16161165 20130101 LA20130101BHEP<LA20190308BHEP</classification-cpc>
    </combination-set>
  </combination-sets>
</classifications-cpc>

Attribute
Description
scheme
CPCNO indicates CPC symbols that have been allocated to a document by a patent examiner who does not work for the EPO. national patent office.
CPC indicates symbols that have been allocated to a document by the EPO.
rankSequential number used to identify the rank of a symbol within a combination set

ElementINIDDescription
classification-cpc52
Cooperative Patent Classification. For more information on CPC, see Cooperative Patent Classification in IFI Claims Direct. The full list of CPC codes can be found on the CPC website or the USPTO website.
When available, F and L symbols may indicate first and later classifications as in the following example: 
 Code Block
languagexml
<classification-cpc mxw-id="PCL-1583949427" load-source="docdb" scheme="CPC">G01F1/6965 20130101 FI20130101BHEP </classification-cpc> 
<classification-cpc mxw-id="PCL-1583981588" load-source="docdb" scheme="CPC">G01F1/72 20130101 LI20130101BHEP </classification-cpc>

combination-sets
Group of CPC symbols that have one base class and one or more subsequent ranked symbols that are linked together to convey special classification information. See https://www.cooperativepatentclassification.org/publications/CpcCSets.pdf for more information.

technical-data/classifications-cpc/combination-sets/combination-set
AttributeDescription
groupNumber used to identify a group of symbols, when allocating a combination set of symbols to a patent document

technical-data/classification-ecla
...
 Tip
titleFurther Reading
For information about the SOLR search fields associated with this container, see Classifications.