Patent application number, authorization announcement number and patent number?

The composition method of patent number is as follows: a. Composition of application number: year (2 digits)-patent type (1 digit)-serial number (5 digits)-. X (parity bit). For example, 02 126306.x, the first two digits 02 indicate the application in 2002; 1 in the third place stands for invention patent (if it is 2, it stands for utility model patent, 3 stands for design patent, and 8 stands for PCT invention patent application that has entered the national stage in China; 9 denotes a PCT patent application for utility model that entered the national stage in China); The serial number of the year of the fourth to eighth representatives can also be regarded as the applicant No.26306 in 2002; Finally,. X is the parity bit, which refers to 1 Arabic numeral (0 to 9) or capitalized English letter X calculated by taking the number combination used in the patent application number as the source data. The patent application number was changed at the end of 2003, including four digits. If it is applied in 2002, it will be represented by 2004. The patent type has not changed, and the serial number has increased from the original five digits to the current seven digits, such as 2004 100 1635. B. WeChat official account: Also known as the patent contribution number, after the initial patent examination is completed, WeChat official account is given, which is composed of "country number+classification number+serial number+identification number", such as CN 1340998A, representing China's No.340998 invention patent.