Patents by Inventor Han-Hsu Chen

Han-Hsu Chen 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).

  • Process for producing aromatic aldehyde compound
    Patent number: 8362303
    Abstract: A process for producing an aromatic aldehyde compound has steps of converting alkyl-substituted or non-substituted benzene into a compound of formula I by halomethylation, and allowing the compound of formula I and alkyl aldehyde to react in presence of phase transfer catalyst at a reaction temperature under alkaline condition to obtain the aromatic aldehyde compound.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: January 29, 2013
    Assignee: UFC Corporation
    Inventors: Yu-Chin Lee, Hsien-Yu Chang, Han-Hsu Chen, Yu-Sen Hou, Rong-Yi Liao
  • Process for Producing Aromatic Aldehyde Compound
    Publication number: 20120264981
    Abstract: A process for producing an aromatic aldehyde compound has steps of converting alkyl-substituted or non-substituted benzene into a compound of formula I by halomethylation, and allowing the compound of formula I and alkyl aldehyde to react in presence of phase transfer catalyst at a reaction temperature under alkaline condition to obtain the aromatic aldehyde compound.
    Type: Application
    Filed: April 12, 2011
    Publication date: October 18, 2012
    Applicant: UFC Corporation
    Inventors: Yu-Chin Lee, Hsien-Yu Chang, Han-Hsu Chen, Yu-Sen Hou, Rong-Yi Liao
  • Phase Transfer Catalyst for Producing Aromatic Aldehyde Compound
    Publication number: 20120264975
    Abstract: Provided is a phase transfer catalyst for producing an aromatic aldehyde compound, comprising a compound of formula I, wherein R1 is hydrogen, methyl, ethyl, isopropyl, isobutyl or tertbutyl; R4, R5 and R6 are independently selected from alkyl groups containing 1 to 6 carbon atoms; and X is fluorine, chlorine, bromine or iodine.
    Type: Application
    Filed: April 14, 2011
    Publication date: October 18, 2012
    Applicant: UFC Corporation
    Inventors: Yu-Chin Lee, Hsien-Yu Chang, Han-Hsu Chen, Yu-Sen Hou, Rong-Yi Liao