Patents by Inventor Wei Ming Chang

Wei Ming Chang 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: 20200056097
    Abstract: A method of treating drilling mud with oil-based drilling fluid contains: a mud homogenization step configured to homogenize drilling mud which is solidized mud; a 3-phase cyclone separation step in which water vapors are used as a cleaning agent; a petroleum gas oxidation and combustion step in which the petroleum gas is extracted out of the 3-phase separator by using an oil gas oxidation device, and the petroleum gas is thermal oxidized and combusted; a liquid catalyst extraction step executed in which porous substances and hydrocarbon are extracted out of solid waste by using a microbubble extracting and liquid catalyst; a liquid catalyst recycling step having two-stage molecular distillation means so as to recycle the liquid catalyst to the liquid catalyst extraction step and to eliminate the liquid catalyst from recycled base oil. The mud homogenization step is alternatively executed based on physical condition of the drilling mud.
    Type: Application
    Filed: August 15, 2018
    Publication date: February 20, 2020
    Inventors: Wei Ming CHANG, Cheng Yin CHANG, Jui Ting CHANG
  • Patent number: 7998317
    Abstract: A glycerol preparation method for preparation of medical grade glycerol from a by-product of a bio-diesel process includes a first stage phosphoric acid chemical reaction process and a posterior by-product centrifugal separation process to have the phosphoric acid chemical reaction by-product be separated into free fatty acid, potassium phosphoric acid, and a crude glycerol and methanol mixture. The crude glycerol and methanol mixture is further processed through a first step of thin film evaporation process where methanol is reclaimed, a second step of thin film evaporation process where the mixture is dehydrated, a third step of molecular distillation process where an industrial grade glycerol of purity over 95% is extracted, and a fourth step of molecular distillation process where a medical grade glycerol of purity in exceed of 99.75% that meets USP/BP standards is extracted.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: August 16, 2011
    Inventor: Wei Ming Chang
  • Publication number: 20100063332
    Abstract: A glycerol preparation method for preparation of medical grade glycerol from a by-product of a bio-diesel process by means of thin film evaporation and molecular distillation include a first stage phosphoric acid chemical reaction process and a posterior by-product centrifugal separation process to have the phosphoric acid chemical reaction by-product be separated into free fatty acid, potassium phosphoric acid, and a crude glycerol and methanol mixture. The crude glycerol and methanol mixture is further processed through a first step of thin film evaporation process where methanol is reclaimed, a second step of thin film evaporation process where the mixture is dehydrated, a third step of molecular distillation process where an industrial grade glycerol of purity over 95% is extracted, and a fourth step of molecular distillation process where a medical grade glycerol of purity in exceed of 99.75% that meets USP/BP standards is extracted.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 11, 2010
    Inventor: Wei Ming Chang