Patents by Inventor Ming-Mei Yeh

Ming-Mei Yeh 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).

  • Yellow dye composition
    Publication number: 20060288498
    Abstract: A dye composition, which comprising two or three components, each component is different with another and is selected from the formula (I), (II), or (III). The yellow dye composition disclosed here is a dye composition with good stability of aqueous dye solution, good storage stability, high solubility and excellence light fastness. The yellow dye composition is suitable for the cellulose fibers in dyeing and printing.
    Type: Application
    Filed: November 18, 2005
    Publication date: December 28, 2006
    Applicant: Everlight USA, Inc.
    Inventors: Ming-Mei Yeh, Shiun-Jenn Chen, Li-Ping Sun
  • Mixtures of symmetrical and unsymmetrical red reactive dyes
    Patent number: 6068667
    Abstract: The present invention relates to novel, three component, mixtures comprising red reactive dyes which in the free acid forms are represented by the formula (I), (II) and (II'),a) a red reactive dye of formula (I) ##STR1## where the variables are as described in the claims. The mixtures are suitable for dyeing and printing cellulose containing fibre materials and produce dyeings and prints which exhibit good build up and fastness properties.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: May 30, 2000
    Assignee: Everlight USA, Inc.
    Inventors: Ming-Mei Yeh, Ting-Jui Chang, Sheena Lee, Da-Jong Yin