Patents by Inventor Tianjun Yu

Tianjun Yu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Molecular glass of spirofluorene derivative, preparation method thereof and use thereof in photo-etching
    Patent number: 9290435
    Abstract: Disclosed is a molecular glass of a spirofluorene derivative having a molecular structure as follows: formula (I), wherein each of R1-R12 is a hydrogen atom, a hydroxyl group, a methoxyl group or an acid-sensitive substituent; substituents R1˜R12 can be identical or different, but on the same benzene ring the substituents cannot all be hydrogen atoms. The molecular glass has a good solubility in various polar solvents, is suitable to be made into a film; meanwhile the molecular glass has a very high glass transition temperature and meets the requirements of the photolithography processing technology. Also disclosed is a preparation method of the above-mentioned molecular glass of a spirofluorene derivative. The synthetic process of the method is simple and suitable for industrialization.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: March 22, 2016
    Assignee: Technical Institute of Physics and Chemistry of the Chinese Academy of Sciences
    Inventors: Yi Li, Qingshan Hao, Jinping Chen, Yi Zeng, Tianjun Yu
  • MOLECULAR GLASS OF SPIROFLUORENE DERIVATIVE, PREPARATION METHOD THEREOF AND USE THEREOF IN PHOTO-ETCHING
    Publication number: 20150353468
    Abstract: Disclosed is a molecular glass of a spirofluorene derivative having a molecular structure as follows: formula (I), wherein each of R1-R12 is a hydrogen atom, a hydroxyl group, a methoxyl group or an acid-sensitive substituent; substituents R1˜R12 can be identical or different, but on the same benzene ring the substituents cannot all be hydrogen atoms. The molecular glass has a good solubility in various polar solvents, is suitable to be made into a film; meanwhile the molecular glass has a very high glass transition temperature and meets the requirements of the photolithography processing technology. Also disclosed is a preparation method of the above-mentioned molecular glass of a spirofluorene derivative. The synthetic process of the method is simple and suitable for industrialization.
    Type: Application
    Filed: January 22, 2013
    Publication date: December 10, 2015
    Inventors: Yi Li, Qingshan Hao, Jinping Chen, Yi Zeng, Tianjun Yu