Patent application paper should be drawn in proportion or directly.

Generally speaking, it is enough to look at the structural characteristics. In order to see the structure of each layer clearly on a picture, some multi-layer structures may not be drawn on the scale. Many just draw a schematic diagram, draw the necessary features, and outline other unnecessary ones. Some people also take pictures and then draw a wireframe on the photos in the computer.

Some provisions in the Review Guidelines:

4? 3 attached drawings of the specification

The drawings in the instruction manual should be drawn with drawing tools, including computer and black ink. The lines shall be uniform, clear and deep enough, and shall not be colored or altered. Engineering blueprints shall not be used.

The section line in the section drawing shall not hinder the clear identification of the reference mark line and the main line.

How many pictures can be drawn on a piece of paper? A master plan can be drawn on several drawings, but it is necessary to ensure that the drawings on each drawing are independent. When all the drawings are combined to form a complete master plan, they do not affect each other's clarity. There should be no borders around the drawings that have nothing to do with the drawings. If there are more than two attached drawings, they shall be numbered with Arabic numerals, and the word "Figure" shall be added before the number, as shown in Figure 1 and Figure 2. This number should be marked directly below the corresponding drawing.

The attached drawings should be drawn as vertically as possible on the drawings and clearly separated from each other. When the horizontal dimension of parts is obviously larger than the vertical dimension and must be arranged horizontally, the top of the drawing should be placed on the left side of the drawing. When there are more than two drawings on a page, and one of them has been arranged horizontally, the other drawings on the page should also be arranged horizontally.

Reference numerals shall be numbered with Arabic numerals. Reference symbols not mentioned in the text of the specification shall not appear in the drawings, and reference symbols not appearing in the drawings shall not appear in the text of the specification. The application documents indicate the same components.

Reference numbers should be consistent.

The size and clarity of the attached drawings should ensure that all the details in the drawings can still be clearly distinguished when the drawings are reduced to two thirds, so as to meet the needs of copying and scanning.

Seek as the standard.

The same drawing should be drawn at the same scale, and a local enlarged drawing can be added to make a part show clearly. The appended drawings shall have no other comments except necessary words. The text in the appended drawings should be Chinese, and the original text can be marked with brackets if necessary.

The flow chart and block diagram should be attached as drawings, and the necessary words and symbols should be given in their boxes. Generally, photographs are not allowed to be used as drawings, but under special circumstances, such as showing metallographic structures, tissue cells or electrophoresis maps, photographs can be used.

Stick it on the drawing as a drawing.

The drawings in the specification shall be numbered in Arabic numerals.