Document (#20651)

Author
Jialian, S.
Title
Technical subjects analysis of Chinese patents according to IPC
Source
World patent information. 16(1994) no.2, S.116-118
Year
1994
Abstract
According to the statistical analysis of the IPC symbols allotted to Chinese patent applications, the differences between technical subject matters of patents for invention and utility models are quite clear. There is a difference between foreign applications and domestic ones. The inventive level of the majority of domestic patent applications is relatively low. However, patent applications relating to modern high tech subjects are increasing gradually
Field
Patentinformation
Location
China

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