Patents by Inventor Chunman Li

Chunman 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).

  • Patent number: 11117832
    Abstract: A fluorescent polycarboxylate superplasticizer and a preparation method thereof. The preparation process of the polycarboxylate superplasticizer is as follows. Firstly, a redox radical polymerization is performed on a monomer of an unsaturated acid and a derivative thereof, and an unsaturated polyether monomer to form a polycarboxylate superplasticizer pre-product. Then, the polycarboxylate superplasticizer pre-product is subjected to an esterification reaction with an organic molecule having a fluorescent property to obtain the fluorescent polycarboxylate superplasticizer. The method effectively reduces the reaction difficulty and makes the reaction rapid and efficient. The fluorescent polycarboxylate superplasticizer is non-toxic and non-polluting, and has good controllability in the production process and less side reactions.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: September 14, 2021
    Assignee: Jiangsu ARIT New Materials CO., LTD.
    Inventors: Shanshan Qian, Chunyang Zheng, Chunman Huang, Haidong Jiang, Yangcheng Hu, Wei Li, Jiezhong Gan
  • Publication number: 20160305612
    Abstract: The present invention provides a perfluorophosphate-based drag-reducing agent for gas pipelines. Raw materials for the perfluorophosphate-based drag-reducing agent for gas pipelines consist of fatty acid(s), pyridine(s), fluorophosphates(s) and haloalkane(s) in a mass ratio of 2:1:1:1 to 2:3:1:2. A method for preparing the perfluorophosphate-based drag-reducing agent for gas pipelines is also provided. The perfluorophosphate-based drag-reducing agent for gas pipelines is non-toxic and environmentally friendly, has a high drag reduction percentage, a long-lasting effect, good stability and solubility, does not affect the inner surface and coatings of natural gas pipelines or gas quality, and is suitable for on-line atomization and injection.
    Type: Application
    Filed: November 7, 2014
    Publication date: October 20, 2016
    Inventors: Zhiheng ZHANG, Guoping LI, Guangwen LIU, Muyang AI, Haifeng GUO, Weichun CHANG, Xiaodong DAI, Chunman LI, Fajie YANG
  • Publication number: 20130333382
    Abstract: The present invention is a power source machinery. The power source machinery has following functions. Firstly, a slow cyclic flow is generated in a first period, and a quick and slow cyclic flow is generated in a second period. Secondly, a first huge generator drives a cylinder to rotate slowly from beginning to end, and outputs a lot of electric energy. Thirdly, supply of rotary power to a second generator and a third generator is stopped, and the rotary power is transferred to a gas pump and a water pump, which are rotating to finish the quick cyclic flow. In every period, the quick flow raise liquid in a single water-caltrop-shaped element in a lower portion to a single water-caltrop-shaped element in a higher portion, which has a function of lever, in such a manner that the power source machinery rotates continuously for a long period.
    Type: Application
    Filed: December 8, 2011
    Publication date: December 19, 2013
    Inventors: HeungTung Li, ChunMan Li
  • Patent number: 8537120
    Abstract: A four-corner cut square Chinese character input method based on excellent code comprises the steps of: assigning predesigned code table to corresponding keys of a keyboard; and inputting Chinese Character according to four-corner coding of Chinese character by using the corresponding keys on the keyboard, an inputting rule of Chinese character coding including twenty cutting rules which comprise the characteristic of the excellent code combining with cutting skill. The excellent code table and cutting skill are capable of putting an end to the amphibolous codes, with this input method, most of Chinese characters don't have overlapped codes.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: September 17, 2013
    Assignee: Shenzhen Qichuangmei Technology Co., Ltd
    Inventors: Lin Feng, Chunman Li, Heungyeung Li
  • Publication number: 20110115715
    Abstract: A four-corner cut square Chinese character input method based on excellent code comprises the steps of: assigning predesigned code table to corresponding keys of a keyboard; and inputting Chinese Character according to four-corner coding of Chinese character by using the corresponding keys on the keyboard, an inputting rule of Chinese character coding including twenty cutting rules which comprise the characteristic of the excellent code combining with cutting skill. The excellent code table and cutting skill are capable of putting an end to the amphibolous codes, with this input method, most of Chinese characters don't have overlapped codes.
    Type: Application
    Filed: March 27, 2009
    Publication date: May 19, 2011
    Inventors: Chunman Li, Heungyeung Li
  • Patent number: 7592379
    Abstract: An oil-based suspension-dispersion system of drag reduction polymers and the method for preparing same, characterized in adding 0.001-0.1 wt % of ultraviolet absorber and 0.001-0.1 wt % of bactericide into 50-90 wt % of vegetable oil and then mixing the obtained mixture to be homogeneous for use as dispersant, adding 2-25 wt % of separant into 10-40% of extra-high-molecular ?-olefin-styrene polymer based drag reduction polymer and crushing them into powders at a temperature of lower than ?90° C., based on the total weight of the suspension-dispersion system, and then adding the obtained mixture into the dispersant and stirring the mixture by using a high speed emulsion machine to make the mixture homogeneous and emulsified. The system offers a low viscosity of the suspended dispersion system, a high solid content up to 35%; improved high temperature resistance performance, higher flash point, improved safety, and good stability in storage.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: September 22, 2009
    Assignee: PetroChina Company Limited
    Inventors: Bing Liu, Xuchen Bao, Yanqing Gao, Chunman Li, Guoping Li
  • Publication number: 20070004837
    Abstract: An oil-based suspension-dispersion system of drag reduction polymers and the method for preparing same, characterized in adding 0.001-0.1 wt % of ultraviolet absorber and 0.001-0.1 wt % of bactericide into 50-90 wt % of vegetable oil and then mixing the obtained mixture to be homogeneous for use as dispersant, adding 2-25 wt % of separant into 10-40% of extra-high-molecular ?-olefin-styrene polymer based drag reduction polymer and crushing them into powders at a temperature of lower than ?90° C., based on the total weight of the suspension-dispersion system, and then adding the obtained mixture into the dispersant and stirring the mixture by using a high speed emulsion machine to make the mixture homogeneous and emulsified. The system offers a low viscosity of the suspended dispersion system, a high solid content up to 35%; improved high temperature resistance performance, higher flash point, improved safety, and good stability in storage.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 4, 2007
    Applicant: PetroChina Company Limited
    Inventors: Bing Liu, Xuchen Bao, Yanqing Gao, Chunman Li, Guoping Li