Document (#20654)

Author
Vries, S. de
Title
Points of interest concerning the new IPC
Source
World patent information. 11(1989) no.3, S.115-120
Year
1989
Abstract
The International Patent Classification (IPC) is widely regarded as an important search tool, both by patent offices and by outside users. To maintain its usefulness, the classification schemes of the IPC have to be adapted in order to provide for new techniques and to keep the size of the search files managerable. Such adaptation is done by amending the classification schemes, or by introducing hybrid systems. In the 5th edition of the IPC, both approaches have been followed: in comparison with the 4th edition, the number of hybrid systems introduced has sharply increased. The use of hybrid systems is strongly recommended: it is, however, non-obligatory, at least for the near future.
Field
Patentinformation
Object
IPC

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