Patents by Inventor Jian-Kun Shen

Jian-Kun Shen 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: 10889518
    Abstract: The present invention provides a use of an inorganic salt or acid capable of producing free phosphate or fluoride ion in reducing the hardness and/or alkalinity of a water system containing residual antiscalant. In the lab test, it is found that the addition of a suitable amount of sodium phosphate or sodium fluoride may induce alkalinity reduction as well as hardness reduction. The production efficiency can be enhanced since the scaling was relieved and heat exchange efficiency can be improved. Meanwhile, lower scaling stress also means lower antiscalant dosage and cost, and thus the total operation cost can be reduced.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: January 12, 2021
    Assignee: ECOLAB USA INC.
    Inventors: Yue Ming Zhou, Jian Kun Shen, Yin Yin Tong, Ling Feng Han
  • Patent number: 10538880
    Abstract: The present invention discloses a method for detackifying organic contaminants in the process of pulping and papermaking and a composition used for the same. Specifically, the invention discloses that the water circulation system of pulping and papermaking process can be provided with non-ionic cellulose ether and cationic coagulant in lower amount, through which, the deposition of organic contaminants can be inhibited under the synergistic action of pre-coagulation and detackification.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: January 21, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Qing Qing Yuan, Qun Dong, Zhi Chen, Jian Kun Shen
  • Patent number: 9975781
    Abstract: The present invention relates to colloidal silicas having a low S-value and a high solids content, the preparation thereof, and the use thereof in the production of paper. When used in the production of paper, the colloidal silicas of the invention exhibit good retention and drainage performance so that they can be used in lower amounts compared to conventional colloidal silicas. The present invention also relates to an apparatus and a method for producing such activated colloidal silicas.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: May 22, 2018
    Assignee: Ecolab USA Inc.
    Inventors: Wen Bai, Jian Xu, Jia Wu, Zhi Chen, Jian Kun Shen, Raymond D. Miller, Jr., Jane B. Wong Shing
  • Publication number: 20180016172
    Abstract: The present invention provides a use of an inorganic salt or acid capable of producing free phosphate or fluoride ion in reducing the hardness and/or alkalinity of a water system containing residual antiscalant. In the lab test, it is found that the addition of a suitable amount of sodium phosphate or sodium fluoride may induce alkalinity reduction as well as hardness reduction. The production efficiency can be enhanced since the scaling was relieved and heat exchange efficiency can be improved. Meanwhile, lower scaling stress also means lower antiscalant dosage and cost, and thus the total operation cost can be reduced.
    Type: Application
    Filed: July 11, 2017
    Publication date: January 18, 2018
    Applicant: ECOLAB USA INC.
    Inventors: Yue Ming ZHOU, Jian Kun SHEN, Yin Yin TONG, Ling Feng Han
  • Publication number: 20170314203
    Abstract: The present invention discloses a method for detackifying organic contaminants in the process of pulping and papermaking and a composition used for the same. Specifically, the invention discloses that the water circulation system of pulping and papermaking process can be provided with non-ionic cellulose ether and cationic coagulant in lower amount, through which, the deposition of organic contaminants can be inhibited under the synergistic action of pre-coagulation and detackification.
    Type: Application
    Filed: July 6, 2017
    Publication date: November 2, 2017
    Applicant: Ecolab USA Inc.
    Inventors: Qing Qing Yuan, Qun Dong, Zhi Chen, Jian Kun Shen
  • Publication number: 20160326698
    Abstract: Methods, processes, and compositions for improving sizing efficiency in a paper-making process are provided. Pulp slurry is treated by using alkenyl succinic anhydride that is emulsified with a polymer emulsifier. The emulsified alkeny succinic anhydride is used in conjunction with paper-making filler particles that are modified with hydroxyl-containing hydrocarbon natural polymer polysaccharide.
    Type: Application
    Filed: December 18, 2014
    Publication date: November 10, 2016
    Applicant: ECOLAB USA INC.
    Inventors: Zhi CHEN, Jian Kun SHEN, Kun HOU
  • Publication number: 20160311693
    Abstract: The present invention relates to colloidal silicas having a low S-value and a high solids content, the preparation thereof, and the use thereof in the production of paper. When used in the production of paper, the colloidal silicas of the invention exhibit good retention and drainage performance so that they can be used in lower amounts compared to conventional colloidal silicas. The present invention also relates to an apparatus and a method for producing such activated colloidal silicas.
    Type: Application
    Filed: December 17, 2014
    Publication date: October 27, 2016
    Inventors: Wen BAI, Jian XU, Jia WU, Zhi CHEN, Jian Kun SHEN, Raymond D. MILLER, Jr., Jane B. WONG SHING
  • Patent number: 9463073
    Abstract: A method is described for determining brain shift, such as the brain shift that occurs following a neurosurgical intervention. The method includes taking a first image of the brain of a subject, the first image showing the position of blood vessels in the brain relative to a reference position. A second image of the brain that has been acquired following an intervention on the subject is also taken. This second image has been acquired using computed tomography imaging apparatus. The second image shows the position of blood vessels in the brain relative to the reference position. Brain shift is then determined from the shift in position of the blood vessels in at least one region of interest of the brain, with respect to the reference position, between the first and second images. Corresponding apparatus is also described.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: October 11, 2016
    Assignee: RENISHAW (IRELAND) LIMITED
    Inventors: Steven Streatfield Gill, Jian-Kun Shen
  • Publication number: 20160273167
    Abstract: The invention provides a dialdehyde modified acrylamide type polymer for paper making, which is obtained by reacting a dialdehyde with an acrylamide type base polymer, wherein the acrylamide type base polymer is formed by copolymerization of an acrylamide type monomer, a cationic monomer and/or an anionic monomer and a cross linking agent. The invention further provides a method for preparing said dialdehyde modified acrylamide type polymer. The dialdehyde modified acrylamide type polymer according to the invention has improved stability while maintains excellent enhanced performance.
    Type: Application
    Filed: October 13, 2014
    Publication date: September 22, 2016
    Applicant: Ecolab USA Inc.
    Inventors: Meng Zhang, Bo Zhu, Yulin Zhao, Jian Kun Shen, Na Xu
  • Patent number: 9265259
    Abstract: The invention is directed to compositions and methods of their use as effective biocidal agents for water streams. The composition comprises a halogen source, halogen stabilizers containing a sulfur bearing species and ammonium salts/urea, and an alkali. The sulfur bearing species includes sulfamic acid or its salt equivalent. By having optimized mixing ratio of halogen to stabilizer and that of ammonium salts to sulfamic acid or sulfamate, a synergistic effect occurs which both increases the efficacy of the composition as a biocide and it avoids adverse impacts on other chemicals that are present in the water stream. Best of all the composition is easy to form and easy to introduce into a water stream of concern. Its introduction can be as simple as mixing two containers of reagent prior to introduction to the water process stream.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: February 23, 2016
    Assignee: NALCO COMPANY
    Inventors: Wen Li Tu, Laura E. Rice, Andrew J. Cooper, Elisa M. Luth, Yu-mei Lu, Jian Kun Shen
  • Publication number: 20130279784
    Abstract: A method is described for determining brain shift, such as the brain shift that occurs following a neurosurgical intervention. The method includes taking a first image of the brain of a subject, the first image showing the position of blood vessels in the brain relative to a reference position. A second image of the brain that has been acquired following an intervention on the subject is also taken. This second image has been acquired using computed tomography imaging apparatus. The second image shows the position of blood vessels in the brain relative to the reference position. Brain shift is then determined from the shift in position of the blood vessels in at least one region of interest of the brain, with respect to the reference position, between the first and second images. Corresponding apparatus is also described.
    Type: Application
    Filed: December 21, 2011
    Publication date: October 24, 2013
    Applicant: RENISHAW (IRELAND) LIMITED
    Inventors: Steven Streatfield Gill, Jian-Kun Shen
  • Publication number: 20130101683
    Abstract: The invention is directed to compositions and methods of their use as effective biocidal agents for water streams. The composition comprises a halogen source, halogen stabilizers containing a sulfur bearing species and ammonium salts/urea, and an alkali. The sulfur bearing species includes sulfamic acid or its salt equivalent. By having optimized mixing ratio of halogen to stabilizer and that of ammonium salts to sulfamic acid or sulfamate, a synergistic effect occurs which both increases the efficacy of the composition as a biocide and it avoids adverse impacts on other chemicals that are present in the water stream. Best of all the composition is easy to form and easy to introduce into a water stream of concern. Its introduction can be as simple as mixing two containers of reagent prior to introduction to the water process stream.
    Type: Application
    Filed: November 4, 2011
    Publication date: April 25, 2013
    Applicant: NALCO COMPANY
    Inventors: Wen Li TU, Laura E. RICE, Andrew J. COOPER, Elisa M. LUTH, Yu-mei LU, Jian Kun SHEN
  • Patent number: 6268307
    Abstract: A titania bound ion exchange composition is prepared by admixing crystalline sodium titanate and a hydrolyzable titanium compound and then drying the titania bound crystalline sodium titanate. The dried titania bound ion exchange composition is subjected to optional compaction and calcination steps to improve the physical strength of the titania bound composition.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: July 31, 2001
    Assignee: AlliedSignal Inc.
    Inventors: Irene C. G. DeFilippi, Stephen Frederic Yates, Jian-Kun Shen, Romulus Gaita, Robert Henry Sedath, Gary Joseph Seminara, Michael Peter Straszewski, David Joseph Anderson
  • Patent number: 5885925
    Abstract: This invention is method for preparing a titania bound ion exchange composition comprising admixing crystalline sodium titanate and a hydrolyzable titanium compound and, thereafter drying the titania bound crystalline sodium titanate and subjecting the dried titania bound ion exchange composition to optional compaction and calcination steps to improve the physical strength of the titania bound composition.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: March 23, 1999
    Assignee: AlliedSignal Inc.
    Inventors: Irene C. G. DeFilippi, Stephen Frederic Yates, Jian-Kun Shen, Romulus Gaita, Robert Henry Sedath, Gary Joseph Seminara, Michael Peter Straszewski, David Joseph Anderson