Additional Databases for Engineering Patents
Cooperative Patent Classification (CPC) is a hierarchical system that groups similar patents together (similar to NAICS codes used for grouping companies in the same industry). CPC facilitates searching for "like" patents, regardless of the terminology used to describe the invention.
Example of CPC Scheme:
A46B 9/04 toothbrush bristles arrangement
|Main Group||A46B 9/00||Arrangement of bristles in the brush body|
|Subgroup||A46B 9/04||... for toothbrushes|
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