What are the application materials for chemical patents?

I. Types of Patent Applications Patent applications can be divided into inventions, utility models and designs. You may apply for a patent for invention for a new technical scheme proposed for a product, method or improvement; You can apply for a patent for utility model according to the new technical scheme that the shape, structure or combination of products are suitable for practical use, and you can apply for a patent for appearance design according to the new design that the shape, pattern or combination of products and the combination of colors and shapes and patterns are aesthetic and suitable for industrial application. Two, the application for a patent for design should provide information 1, product samples or pictures; 2. The pictures provided shall be drawn according to the following requirements; (1) The size of the picture or photograph should be between 3cm× 8cm and 15cm× 22cm; (2) Pictures must be drawn by computer or regular drawing tools; (3) The perspective view of the product should include front view, back view, left view, right view, top view, bottom view and perspective view (symmetrical or identical can be omitted); (4) The proportion of each view must be consistent; 5] There shall be no graphics or words such as trademarks, logos, portraits of celebrities, etc. that do not constitute the design, and there shall be no indication lines, dotted lines, middle lines, full-inch marks, etc. 3. The applicant needs the seal of the unit; Personal signature of the applicant for personal needs; 4. Each application should provide clear information, such as the applicant's name, detailed address, telephone number, postal code, designer's name, etc. Note: 1. Documents submitted to China National Intellectual Property Administration (Patent Office), such as application, design drawings or photos, brief description of design, etc. It's all done by patent agents. 2. The application for a patent for design generally takes about 3 months from application to authorization, and the patent certificate for design will be issued three months after the registration fee.