Patents by Inventor Dakai D. Ren

Dakai D. Ren 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).

  • Flame-retardant polyurethane foam
    Patent number: 11267945
    Abstract: A thermoset foam comprises from 0.2 to 4.0 wt. % of at least one aliphatic brominated polyether polyol, from 2.0 to 7.0 wt. % of at least one aromatic brominated polyester polyol, and from 2.0 to 7.5 wt. % of at least one flame retardant comprising organo-phosphate, organo-phosphonate, or organo-phosphite, wherein the ratio of the amount of aliphatic bromine expressed as a percentage of total bromine to the amount of aromatic bromine expressed as a percentage of total bromine is from 10:90 to 50:50.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: March 8, 2022
    Assignee: DDP SPECIALTY ELECTRONIC MATERIALS US, LLC
    Inventors: Kali Ananth Suryadevara, Mark W. Beach, Dakai D. Ren
  • FLAME-RETARDANT POLYURETHANE FOAM
    Publication number: 20210238375
    Abstract: A thermoset foam comprises from 0.2 to 4.0 wt. % of at least one aliphatic brominated polyether polyol, from 2.0 to 7.0 wt. % of at least one aromatic brominated polyester polyol, and from 2.0 to 7.5 wt. % of at least one flame retardant comprising organo-phosphate, organo-phosphonate, or organo-phosphite, wherein the ratio of the amount of aliphatic bromine expressed as a percentage of total bromine to the amount of aromatic bromine expressed as a percentage of total bromine is from 10:90 to 50:50.
    Type: Application
    Filed: January 31, 2020
    Publication date: August 5, 2021
    Inventors: Kali Ananth Suryadevara, Mark W. Beach, Dakai D. Ren