Is there a patent for chameleon electro-optic paint?

Patent application-acceptance-preliminary examination-publication-substantive examination request-substantive examination-documents to be submitted when applying for invention patent authorization 1) request: including the name of the invention patent, the name of the inventor or designer, the name and address of the applicant, etc. 2) Description: including the name, technical field, background technology, invention content, attached drawings and specific implementation methods of the invention patent. 3) Claim: Explain the technical features of the invention, and clearly and concisely state the content to be protected. 4) Drawings in the specification: Invention patents often have drawings. If only words are enough to describe the technical scheme clearly and completely, there is no need for drawings.