Search formula for Publication/Approval Number is to input in the Line C.

Format: Publication/Approval Number is a 9-digit number.

100031179 the first digit of which is 1, denotes a patent of inventation

200010022 the second digit of which is 2, denotes a patent of utility model

Important

the Publication/Approval Number was just used since 1989, it's empty for applications before 1989.

Right trancation can be used for search in an interval.

例如: 10 表示从 100000001 至 109999999

For a complicated search in which more than one Publicatio/Approval Number is involved, boolean operators, "+', "*", "-", "(" and ")" can be used.

For Example：	10000101+(110000-110000010)

Important: "*"（AND）doesn't make any sense to Publication/Approval Number.

If search in this entry is carried out successfully, the hits will be shown at the most right column of this line, otherwise the error message will be shown instead.