China Patent Information Research System Search Counter£º

Search formula for Application Date is to input in the Line B

Format: Application Date is a six-digit number.

The following format are available: YYMMDD YYMM YY or YYMMDD>YYMMDD (this format doesn't work without day or month of the date)

YY denotes Year(2 digit) MM denotes Month(2 digit) DD denotes Day (2 digit)

For Example: 890112 indicates applications filed on 12 January, 1989
9103 indicates applications filed in March, 1991
89 indicates applications filed in 1989
990101>020101

indicates applications filed from 1 January, 1999 through 12 March, 2003

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

For Example£º 8510+(8610-861006)+990101>011231

Important: "*"£šAND£©doesn't make any sense to Application Date.

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.


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Copyright 2002.6