Patents by Inventor Yuen Choo

Yuen Choo 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).

  • Publication number: 20070021625
    Abstract: The present invention relates to a method for production of two types of edible oils, an oil type with high diacylglycerol content (DAG oil) containing at least 8 wt % diacylglycerol and another oil type with low diacylglycerol content (TAG oil) containing less than 8 wt % diacylglycerol, from a vegetable oil. The method comprises subjecting a vegetable oil to at least one stage of short-path distillation under vacuum level of not more than 0.01 Torr and at temperature of not more than 300° C., wherein DAG oil is obtained as distillate and whereas TAG oil is obtained as residue.
    Type: Application
    Filed: March 15, 2006
    Publication date: January 25, 2007
    Inventors: Yuen Choo, Chiew Puah, Ah Ma, Yusof Basiron
  • Publication number: 20060288637
    Abstract: Palm-based biodiesel formulations with enhanced cold flow properties are provided including the following: (I) A biodiesel formulation comprising not more than 40 vol % palm-based biodiesel and not less than 60 vol % petroleum-based fuel oil; (II) A biodiesel formulation comprising not more than 20 wt % palm-based biodiesel and not less than 80 wt % alkyl ester of C6-C18 saturated or unsaturated fatty acid, or a mixture thereof, wherein the alkyl ester is methyl, ethyl, isopropyl, n-butyl, 2-butyl or isobutyl ester, or a mixture thereof; (III) A biodiesel formulation comprising approximately 0.1-1.0% (wt/vol) of a polylkyl methacrylate (PAMA) additive and a palm-based biodiesel blend comprising i) not more than 40 vol % palm-based biodiesel; and ii) not less than 60 vol % petroleum-based fuel oil; (IV) A biodiesel formulation comprising approximately 0.1-5.0% (wt/vol) of a polylkyl methacrylate (PAMA) additive and a palm-based biodiesel having unsaturation level of not less than 60%.
    Type: Application
    Filed: June 9, 2006
    Publication date: December 28, 2006
    Applicant: Malaysian Palm Oil Board
    Inventors: Yuen Choo, Ah Ma, Yusof Basiron, Chee Yung, Sit Foon Cheng
  • Publication number: 20060128979
    Abstract: The present invention relates to a process for producing high purity monoglycerides from edible oils/fats and fatty acids through glycerolysis, in particular but not exclusively to the production of monoglycerides from palm oil and palm oil products. This is achieved by providing a process for the production of monoglycerides of fatty acids or fats and oils, comprising the steps of reacting fatty acids or fats and oils with excess glycerol in the presence of an acidic or alkaline catalyst; substantially separating the crude reaction product from the other reaction components; removing unwanted reaction components from the crude reaction product by washing; drying the reaction product.
    Type: Application
    Filed: September 21, 2005
    Publication date: June 15, 2006
    Applicant: Lembaga Minyak Sawit Malaysia
    Inventors: Yuen Choo, Sit Cheng, Ah Ma, Yusof Basiron
  • Publication number: 20060117648
    Abstract: A lubricity additive for fuels with sulphur content of not more than 0.05 wt % is described herein. The lubricity additive comprises a polyol ester or a mixture of polyol esters derived from C8-C18 saturated and/or unsaturated fatty acids. The polyol esters is produced by: i) esterification of a C8-C18 saturated or unsaturated fatty acids, or a mixture thereof, with a polyhydric alcohol; ii) transesterification of an oil or a mixture of oils, with fatty acid composition comprising C8-C18 saturated and/or unsaturated fatty acids, with a polyhydric alcohol. The preferred fatty acids are unsaturated C18 fatty acids, more particularly, oleic acid whereas the preferred polyhydric alcohol is neopolyol, more particularly, trimethylol propane and its isomers. A fuel composition comprising a major amount of fuel with sulphur content of not more than 0.05 wt % and a minor amount of the lubricity additive is also described herein. The amount of the lubricity additive is not more than 0.1 wt %.
    Type: Application
    Filed: September 27, 2005
    Publication date: June 8, 2006
    Applicant: Malaysian Palm Oil Board
    Inventors: Yuen Choo, Sit Cheng, Ah Ma, Yusof Basiron
  • Publication number: 20060088644
    Abstract: The invention relates to vegetable oil products, including palm oil products, containing one or more constituents from a group which includes monoacylglycerols, diacylglycerols, triacylglycerols, carotenes, tocols, phytosterols, squalene and free fatty acids, from vegetable oil sources and a process for the production thereof by using supercritical fluid extraction.
    Type: Application
    Filed: August 31, 2005
    Publication date: April 27, 2006
    Inventors: Yuen Choo, Ah Ma, Tan Sri Yusof Basiron, Chiew Puah
  • Publication number: 20050119137
    Abstract: A cost effective and less energy demanding method of producing ester oils or lubricant base oils, particularly fatty monoesters and fatty polyol esters, by esterifying palm fatty acid, which is abundant from the fat splitting process, with a monohydric alcohol or polyhydric alcohol in the presence of an acid catalyst at elevated temperature wherein an azeotroping agent, particularly toluene, is used to facilitate continuous removal by distillation, of water formed as a by-product during the esterification reaction. The esterification reaction is completed within 5 hours and palm fatty esters as produced with the current method exhibit comparable lubricity and biodegradability.
    Type: Application
    Filed: November 1, 2004
    Publication date: June 2, 2005
    Applicant: Malaysian Palm Oil Board
    Inventors: Yuen Choo, Sit Cheng, Ah Ma, Basiron Yusof