Patents by Inventor Seng Hoong

Seng Hoong 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).

  • Patent number: 7560578
    Abstract: The present invention relates to an improved process for producing hydroxy fatty acids preferably dihydroxy or polyhydroxy acids from unsaturated fatty acids derived from natural oils and fats. The unsaturated fatty acids extracted from natural vegetable oils or animal fats preferably palm-based oleic acid is hydroxylated or oxidized by peracetic acid which formed in situ from a mixture of hydrogen peroxide and formic acid. The process for producing dihydroxy or polyhydroxy fatty acids according to the present invention involve less cost, easier to perform and reduced reaction time. In addition, the dihydroxy or polyhydroxy acids produced according to the present invention is non irritant and suitable to be used in production of cosmetic products.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: July 14, 2009
    Assignee: Malaysian Palm Oil Board
    Inventors: Salmiah Ahmad, Soi Seng Hoong, Mohd Norhisham Sattar, Yusrabbil Amiyati Yusof, Hazimah Abu Hassan, Roila Awang
  • Publication number: 20050283011
    Abstract: This invention discloses a rapid method of production for fatty acid amide from fatty acid and urea. One example is the preparation of oleylamide from oleic acid and urea. The yields are high and oleylamide is selectively formed by judicious choice of catalyst. The production of fatty acid amide involves heating fatty acid and urea in a microwave oven with the use of Lewis acid catalyst. The product from the reaction is subjected to solvent extraction with chloroform and then followed by purification with n-hexane, ethanol and acetonitrile via recrystalisation method. Such an oleylamide is preferred for application as a mould release agent, slip agent in plastic film production, water repellent and as a raw material for cosmetics production.
    Type: Application
    Filed: November 29, 2004
    Publication date: December 22, 2005
    Inventors: Seng Hoong, Salmiah Ahmad, Hazimah Abu Hassan