Patent of scientific research is one important aspect which reflects the fruits of scientific researches

and patent application itself is one of the most important scientific researches as well

whereas it has not been paid enough attention for a long time in scientific literature.We analyze data mining patent grant in us patent trademark office database

which is authoritative in the world.We introduce some typical patents in the fields which are concerned with most patents

including association rules

web mining

clustering algorithms

and parallel data mining etc.In the end

we present data mining topics which are currently blank in the field of data mining patent.