Patents by Inventor Wei Tian LOH

Wei Tian LOH 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).

  • Acid dyes, process for the production thereof and their use
    Patent number: 9745474
    Abstract: Dyes of formula (1) their production and their use are described.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: August 29, 2017
    Assignee: DyStar Colours Distribution GmbH
    Inventors: Roxana Barbieru, Sivamurugan Vajiravelu, Wei Tian Loh
  • Acid dyes, process for the production thereof and their use
    Patent number: 9725597
    Abstract: Dye(s) of formula (I) process for their production and their use are described.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: August 8, 2017
    Assignee: DyStar Colours Distribution GmbH
    Inventors: Roxana Barbieru, Sivamurugan Vajiravelu, Wei Tian Loh
  • Acid dyes, process for the production thereof and their use
    Patent number: 9650516
    Abstract: Dyes of formula (1) a process for their production and their use are described.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: May 16, 2017
    Assignee: DyStar Colours Distribution GmbH
    Inventors: Roxana Barbieru, Vajiravelu Sivamurugan, Wei Tian Loh
  • ACID DYES, PROCESS FOR THE PRODUCTION THEREOF AND THEIR USE
    Publication number: 20160264783
    Abstract: Dyes of formula (1) their production and their use.
    Type: Application
    Filed: October 22, 2014
    Publication date: September 15, 2016
    Inventors: Roxana BARBIERU, Sivamurugan VAJIRAVELU, Wei Tian LOH
  • ACID DYES, PROCESS FOR THE PRODUCTION THEREOF AND THEIR USE
    Publication number: 20160257816
    Abstract: Dyes of formula (1) process for their production and their use.
    Type: Application
    Filed: October 22, 2014
    Publication date: September 8, 2016
    Inventors: Roxana BARBIERU, Vajiravelu SIVAMURUGAN, Wei Tian LOH
  • ACID DYES, PROCESS FOR THE PRODUCTION THEREOF AND THEIR USE
    Publication number: 20160257817
    Abstract: Dye(s) of formula (I) process for their production and their use.
    Type: Application
    Filed: October 22, 2014
    Publication date: September 8, 2016
    Inventors: Roxana BARBIERU, Sivamurugan VAJIRAVELU, Wei Tian LOH