Patents by Inventor Dan Qiu

Dan Qiu 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: 10974225
    Abstract: The present disclosure belongs to the technical field of catalysis, and particularly relates to a metal oxide coated ceramic corrugated plate catalyst, its preparation method and application thereof in preparation of key intermediates of citral. The catalyst consists of a ceramic corrugated plate carrier and a metal oxide active layer coated on a surface of the carrier, wherein the metal oxide active layer is a metal oxide formed by active ingredient titanium and at least four other metal elements selected from vanadium, chromium, manganese, iron, zirconium, niobium and molybdenum.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: April 13, 2021
    Assignees: ZHEJIANG NHU COMPANY LTD., ZHEJIANG UNIVERSITY, SHANDONG NHU PHARMACEUTICAL CO., LTD.
    Inventors: Haoran Li, Xiao Ma, Yong Wang, Baishan Hu, Dan Qiu, Jianyong Mao, Bing Lu, Shanjun Mao, Lili Yu, Qichuan Li
  • Publication number: 20210014971
    Abstract: An electronic device includes a first circuit board, a second circuit board stacked with the first circuit board, and a connection plate connected between the first circuit board and the second circuit board. The connection plate includes a signal transmission part and at least one ground part at a spacing to the signal transmission part. The ground part can be used as a reference ground for a signal transmitted by the signal transmission part, so that the characteristic impedance of the signal transmission part is controllable, and the signal transmitted by the signal transmission part has strong continuity, thereby maintaining good matching performance and reducing an insertion loss caused by characteristic impedance mismatch.
    Type: Application
    Filed: March 15, 2018
    Publication date: January 14, 2021
    Inventors: Hui WANG, Dan QIU, Zhijun CHEN, Daiping TANG
  • Patent number: 10212957
    Abstract: Disclosed in the present invention is a method for preparing an oil-dispersible carotenoid preparation, comprising (by weight parts): mixing 100 parts of carotenoid microcapsule, 100-400 parts of vegetable oil and 0.1-1 part of oil-soluble antioxidant; and grinding the mixture in a colloid mill in a nitro—gen atmosphere and at 10-30° C. to obtain a uniform oil-dispersible carotenoid preparation, wherein the preparation contains 2%-14% carotenoid with an average particle size of up to 0.1-1 ?m, and 100 parts of carotenoid microcapsule contains 10.5-35.8 parts carotenoid, 0.1-1 part of water-soluble antioxidant, and the remainder is a water-soluble colloid. The advantages of the present invention lie in that the oil-dispersible form has a high stability as the surface of the carotenoid particles is still protected with a dense water-soluble colloid, and that an oil-dispersible carotenoid preparation containing carotenoid with a content of up to 2%-14% and an average particle size of only 0.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: February 26, 2019
    Assignees: ZHEJIANG UNIVERSITY, ZHEJIANG NHU COMPANY LTD.
    Inventors: Dan Qiu, Lifang Shi, Jiandong Li, Zhirong Chen, Jiachao Zhou
  • Publication number: 20190041908
    Abstract: The invention discloses an ultrathin, waterproof and sound-permeable composite module, which comprises a waterproof and sound-permeable composite module body, wherein the waterproof and sound-permeable composite module body comprises a metal matrix, an adhesive and a waterproof sound-permeable membrane, the metal matrix is bonded to the waterproof sound-permeable membrane by the adhesive, the metal matrix is provided with a step, the step is integrally formed with the metal matrix, the step is divided into a first step and a second step, and the adhesive is arranged as a single-component epoxy system thermosetting adhesive. In place of traditional die-cut articles, the ultrathin, waterproof and sound-permeable composite module of the invention is bonded to a product, thus fundamentally solving the problems that the traditional die-cut articles have poor uniformity, difficulty in mass production and wide adhered glue.
    Type: Application
    Filed: January 12, 2018
    Publication date: February 7, 2019
    Inventors: Dan QIU, Xinlei MAO
  • Publication number: 20180184689
    Abstract: The present invention discloses a method for preparing controlled release type lutein feed additive. Steps: lutein extract, glycerol and fat are mixed and dissolved, then alkali liquor is dropped under condition of mechanical stirring and sheering emulsification to allow the lutein to be fully saponified. Then fat is added and alkaline saponification is conducted, adjusting the viscosity and neutralizing and conducting spray granulation to the mixed liquor to obtain controlled release lutein feed additive. By utilizing the combined effects of glycerol and fat, the present invention realizes saponification and microcapsule formation using simple method.
    Type: Application
    Filed: June 21, 2016
    Publication date: July 5, 2018
    Inventors: DAN QIU, ZHIRONG CHEN, LIFANG SHI, JIANDONG LI, LINPU CAI, YUFENG LIANG, MINCONG CAI, LIFENG ZHAO
  • Publication number: 20160374375
    Abstract: Disclosed in the present invention is a method for preparing an oil-dispersible carotenoid preparation, comprising (by weight parts): mixing 100 parts of carotenoid microcapsule, 100-400 parts of vegetable oil and 0.1-1 part of oil-soluble antioxidant; and grinding the mixture in a colloid mill in a nitro—gen atmosphere and at 10-30° C. to obtain a uniform oil-dispersible carotenoid preparation, wherein the preparation contains 2%-14% carotenoid with an average particle size of up to 0.1-1 ?m, and 100 parts of carotenoid microcapsule contains 10.5-35.8 parts carotenoid, 0.1-1 part of water-soluble antioxidant, and the remainder is a water-soluble colloid. The advantages of the present invention lie in that the oil-dispersible form has a high stability as the surface of the carotenoid particles is still protected with a dense water-soluble colloid, and that an oil-dispersible carotenoid preparation containing carotenoid with a content of up to 2%-14% and an average particle size of only 0.
    Type: Application
    Filed: June 3, 2014
    Publication date: December 29, 2016
    Inventors: DAN QIU, LIFANG SHI, JIANDONG LI, ZHIRONG CHEN, JIACHAO ZHOU
  • Publication number: 20150334437
    Abstract: A system for uploading a 3D video to a video website by a user is characterized by comprising the following modules: a user uploading platform (1) configured to upload a video and to perform classification and identification on the video; a website video processing background (2) configured to perform operations of content censoring, 3D censoring and 3D video transcoding on the video in the background; an intermediate layer (3) configured to add a 3D attribute label to a 3D video; a website frontend (4) configured to return video meta information and to provide 3D video related information for a website user and a frontend player; and a frontend player (5) configured to perform 3D video playback processing according to the attribute label of the video identified as 3D, and to form a 3D video on the website eventually for being viewed by the user.
    Type: Application
    Filed: July 11, 2013
    Publication date: November 19, 2015
    Applicant: 1VERGE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Haoyu Wu, Yuehuan Wang, Rui Guo, Shaoyu Wang, Ruishu Liu, Jian Yao, Dan Qiu, Hongyu Que, Boyu Pan, Shuqi Lu
  • Patent number: 9173818
    Abstract: A method for continuously preparing stable-type vitamin A microcapsules is disclosed. The method comprises the following steps: adding vitamin A crystals and an antioxidant into a crystal melter continuously according to a certain ratio under the protection of nitrogen to prepare vitamin A melting oil containing the antioxidant; pumping the above melting oil into a high gravity rotary packed bed emulsifier with a liquid distributor by a pump, and pumping aqueous solution containing gellable modified starch into the above high gravity rotary packed bed emulsifier after deoxidation treatment to obtain vitamin A emulsion at the outlet of the high gravity rotary packed bed emulsifier; and atomizing and spraying the emulsion continuously in a cooled starch bed for granulating, and performing fluidization drying and gelation treatment in a fluidized bed by taking nitrogen as a drying medium to obtain the stable-type vitamin A microcapsules.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: November 3, 2015
    Assignee: ZHEJIANG NHU COMPANY LTD
    Inventors: Hong Yin, Jianfeng Chen, Zhirong Chen, Jiexin Wang, Yong Qi, Hong Zhao, Lifang Shi, Dan Qiu
  • Publication number: 20140001662
    Abstract: A method for continuously preparing stable-type vitamin A microcapsules is disclosed. The method comprises the following steps: adding vitamin A crystals and an antioxidant into a crystal melter continuously according to a certain ratio under the protection of nitrogen to prepare vitamin A melting oil containing the antioxidant; pumping the above melting oil into a high gravity rotary packed bed emulsifier with a liquid distributor by a pump, and pumping aqueous solution containing gellable modified starch into the above high gravity rotary packed bed emulsifier after deoxidation treatment to obtain vitamin A emulsion at the outlet of the high gravity rotary packed bed emulsifier; and atomizing and spraying the emulsion continuously in a cooled starch bed for granulating, and performing fluidization drying and gelation treatment in a fluidized bed by taking nitrogen as a drying medium to obtain the stable-type vitamin A microcapsules.
    Type: Application
    Filed: March 25, 2011
    Publication date: January 2, 2014
    Applicant: ZHEJIANG NHU COMPANY LTD
    Inventors: Hong Yin, Jianfeng Chen, Zhirong Chen, Jiexin Wang, Yong Qi, Hong Zhao, Lifang Shi, Dan Qiu
  • Patent number: 8540908
    Abstract: A method of preparing nano-dispersed high-all-trans-carotenoid microcapsules is provided, comprising: preparing 10-20% carotenoid suspension by milling the high-all trans-carotenoid crystals with dichloromethane until the particle size thereof is in the range of 2-5 ?m, then supplying the suspension together with preheated dichloromethane of another pass into a dissolving tank to obtain a solution of 0.5-2%; delivering the solution together with ethanol or isopropanol into a crystallization device having high gravity rotating packed bed simultaneously and continuously, and then into a wiped-film evaporator for desolvation until the solid content is 10-20%, then a transparent alcohol dispersion of carotenoid is obtained; mashing the alcohol dispersion together with an aqueous solution containing an antioxidant and protective colloid and spray drying to obtain nano-dispersed high-all-trans-carotenoid microcapsules.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: September 24, 2013
    Assignees: Zhejiang NHU Company Ltd., Zhejiang University, Beijing University of Chemical Technology
    Inventors: Zhirong Chen, Jianfeng Chen, Hong Yin, Hong Zhao, Dan Qiu, Lifang Shi, Jiandong Li, Guangwen Chu, Lei Shao
  • Publication number: 20120018912
    Abstract: A method of preparing nano-dispersed high-all-trans-carotenoid microcapsules is provided, comprising: preparing 10-20% carotenoid suspension by milling the high-all trans-carotenoid crystals with dichloromethane until the particle size thereof is in the range of 2-5 ?m, then supplying the suspension together with preheated dichloromethane of another pass into a dissolving tank to obtain a solution of 0.5-2%; delivering the solution together with ethanol or isopropanol into a crystallization device having high gravity rotating packed bed simultaneously and continuously, and then into a wiped-film evaporator for desolvation until the solid content is 10-20%, then a transparent alcohol dispersion of carotenoid is obtained; mashing the alcohol dispersion together with an aqueous solution containing an antioxidant and protective colloid and spray drying to obtain nano-dispersed high-all-trans-carotenoid microcapsules.
    Type: Application
    Filed: March 18, 2010
    Publication date: January 26, 2012
    Applicants: ZHEJIANG UNIVERSITY, ZHEJIANG NHU COMPANY LTD
    Inventors: Zhirong Chen, Jianfeng Chen, Hong Yin, Hong Zhao, Dan Qiu, Lifang Shi, Jiandong Li, Guangwen Chu, Lei Shao
  • Publication number: 20050120084
    Abstract: A method for creating and maintaining a social network system using a computer system includes constructing a first database for storing identification information and a second database for storing contact information of a user, the second database being connected to the first database; receiving registration from users in the computer system, the registration containing identification and contact information of the users; sending invitation initiated by a first user to a second user specified by the first user; if the second user accepts the invitation, creating a direct link between these two users, the direct link allowing the two users to access the other's contact information. The method may further include creating an address book containing identification information and contact information of users that are directly connected to a user A for the user A. Any amendment of the information of a user initiated by the user who is directly connected to user A will be reflected in user A's address book.
    Type: Application
    Filed: October 27, 2004
    Publication date: June 2, 2005
    Inventors: Yu Hu, Dan Qiu
  • Patent number: D841839
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: February 26, 2019
    Assignee: Shenzhen Aukey E-Business Co., Ltd.
    Inventors: Huaizhong Ma, Dan Qiu