How to write two patents with sequential relationship between two steps in the same invention patent?

You can increase the number of inventors by submitting a statement describing the change of the item, select the inventor in the third column of the change item, write down the inventor information before the change, and then fill in the inventor information after the change.

In addition, the declaration documents signed by all inventors before the change are required. The above documents can be submitted to the patent office.

Inventor's changes include: name change, omission or error, qualification dispute and Chinese translation change.

According to the first chapter of the first part of the patent examination guide

Article 13 of the Detailed Rules for the Implementation of the Patent Law stipulates that an inventor refers to a person who has made creative contributions to the substantive features of an invention-creation. In the examination procedure of the patent office, the examiner does not examine whether the inventor filled in the request meets the requirements.

The inventor shall be an individual, and no unit or collective shall be filled in the request, such as "XX research group". Inventors shall use their real names, and shall not use pen names or other informal names. If there is more than one inventor, it shall be filled in from left to right. Do not meet the requirements, the examiner shall issue a notice of correction. Where the applicant corrects the name of the inventor in the request, it shall submit the correction opinions, the statements of the parties and the corresponding supporting documents.