Patents by Inventor Mei Yee Cheong

Mei Yee Cheong 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 to produce polyols
    Patent number: 7932409
    Abstract: A process for producing oleochemical polyols comprises the steps of epoxidizing unsaturated oil using an organic acid together with oxygenated water or a per-acid to obtain epoxidized oil; washing the epoxidized oil with salt water to remove unused organic acid together with oxygenated water or a per-acid; neutralizing acidic condition of the washed epoxidized oil with a base; washing the neutralized epoxidized oil with a salt solution until the pH of the neutralized epoxidized oil reaching 6.5 to 7.5 to removed the base residue; drying the washed neutralized epoxidized oil under vacuum; and reacting the washed neutralized dried epoxidized oil with polyhydric alcohol in the presence of boron trifluoride-diethylether complex to produce the oleochemical polyols. The oleochemical polyols are then subjected to the same washing, neutralizing, washing and drying process as in preparing the washed neutralized dried epoxidized oil.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: April 26, 2011
    Assignee: Malaysian Palm Oil Board
    Inventors: Hazimah Abu Hassan, Tuan Noor Maznee Tuan Ismail, Mohd Norhisham Sattar, Seng Soi Hoong, Tian Lye Ooi, Salmiah Ahmad, Kosheela Devi a/p Poo Palam, Mei Yee Cheong
  • PROCESS TO PRODUCE POLYOLS
    Publication number: 20080293913
    Abstract: A process for producing oleochemical polyols comprises the steps of epoxidizing unsaturated oil using an organic acid together with oxygenated water or a per-acid to obtain epoxidized oil; washing the epoxidized oil with salt water to remove unused organic acid together with oxygenated water or a per-acid; neutralizing acidic condition of the washed epoxidized oil with a base; washing the neutralized epoxidized oil with a salt solution until the pH of the neutralized epoxidized oil reaching 6.5 to 7.5 to removed the base residue; drying the washed neutralized epoxidized oil under vacuum; and reacting the washed neutralized dried epoxidized oil with polyhydric alcohol in the presence of boron trifluoride-diethylether complex to produce the oleochemical polyols. The oleochemical polyols are then subjected to the same washing, neutralizing, washing and drying process as in preparing the washed neutralized dried epoxidized oil.
    Type: Application
    Filed: March 28, 2008
    Publication date: November 27, 2008
    Applicant: Malaysian Palm Oil Board
    Inventors: Hazimah ABU HASSAN, Tuan Noor Maznee Tuan Ismail, Mohd Norhisham Sattar, Seng Soi Hoong, Tian Lye Ooi, Salmiah Ahmad, Kosheela Devi a/p Poo Palam, Mei Yee Cheong