Patents by Inventor Yuan-Kai Li

Yuan-Kai Li 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).

  • Low calcium cementitious material and method of manufacturing low calcium cement
    Patent number: 8562734
    Abstract: A low-calcium-cementitious material having a calcium oxide content less than or equal to 10 wt % which is processed at room temperature into a low calcium cement mainly composed of mullite and a method manufacturing of the low calcium cement are provided. The low-calcium-cementitious material includes low calcium fly ash, an alkaline agent, and a congealing agent, wherein the calcium oxide content of the low-calcium-cementitious material is less than or equal to 10 wt %. The low calcium fly ash has a calcium oxide content less than or equal to 10 wt %. The low calcium cement manufacturing method includes providing a low calcium fly ash having a calcium oxide content less than or equal to 10 wt %; providing an alkaline agent; providing a congealing agent; and mixing the low-calcium-content fly ash, the alkaline agent, and the congealing agent and standing the mixture at room temperature to form a low calcium cement.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: October 22, 2013
    Assignee: Ruentex Engineering & Construction Co., Ltd.
    Inventors: Samuel Yin, Ching-Ting Yang, Yuan-Kai Li
  • LOW CALCIUM CEMENTITIOUS MATERIAL AND METHOD OF MANUFACTURING LOW CALCIUM CEMENT
    Publication number: 20120152152
    Abstract: A low-calcium-cementitious material having a calcium oxide content less than or equal to 10 wt % which is processed at room temperature into a low calcium cement mainly composed of mullite and a method manufacturing of the low calcium cement are provided. The low-calcium-cementitious material includes low calcium fly ash, an alkaline agent, and a congealing agent, wherein the calcium oxide content of the low-calcium-cementitious material is less than or equal to 10 wt %. The low calcium fly ash has a calcium oxide content less than or equal to 10 wt %. The low calcium cement manufacturing method includes providing a low calcium fly ash having a calcium oxide content less than or equal to 10 wt %; providing an alkaline agent; providing a congealing agent; and mixing the low-calcium-content fly ash, the alkaline agent, and the congealing agent and standing the mixture at room temperature to form a low calcium cement.
    Type: Application
    Filed: June 17, 2011
    Publication date: June 21, 2012
    Applicant: Ruentex Engineering & Construction Co., LTD.
    Inventors: Samuel Yin, Ching-Ting Yang, Yuan-Kai Li