Patents by Inventor Jinhui Yu

Jinhui Yu 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: 10793475
    Abstract: The present disclosure provides a method for making a housing for a mobile communication device, comprising: step S1: mixing a zirconia ceramic powder, a solvent and a binder to form a mixed slurry; step S2: tape-casting the mixed slurry to form a single layer of base membrane band, and then preparing at least one layer of laminated membrane band on the base membrane band by lamination and isostatic pressing, so as to form a laminated body; step S3: debinding, sintering and hot-bending the laminated body to obtain a compact ceramic housing for a mobile communication device; wherein step S3 is performed in one common step combining sintering and hot bending or by hot bending a flat sample, which has beneficial effects such as high yield, low production cost, good product compactness, good fracture toughness, and good flexural strength, etc.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: October 6, 2020
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Jinhui Yu, Jie He, Rong Li
  • Publication number: 20180370858
    Abstract: The present disclosure provides a method for making a housing for a mobile communication device, comprising: step S1: mixing a zirconia ceramic powder, a solvent and a binder to form a mixed slurry; step S2: tape-casting the mixed slurry to form a single layer of base membrane band, and then preparing at least one layer of laminated membrane band on the base membrane band by lamination and isostatic pressing, so as to form a laminated body; step S3: debinding, sintering and hot-bending the laminated body to obtain a compact ceramic housing for a mobile communication device; wherein step S3 is performed in one common step combining sintering and hot bending or by hot bending a flat sample, which has beneficial effects such as high yield, low production cost, good product compactness, good fracture toughness, and good flexural strength, etc.
    Type: Application
    Filed: January 12, 2018
    Publication date: December 27, 2018
    Inventors: Jinhui Yu, Jie He, Rong Li
  • Patent number: 9403727
    Abstract: A method for producing ferrite ceramic includes the steps of providing a ferrite powder; oven-drying the ferrite powder; adding organic additives into the oven-dried powder and mixing them to form a ferrite slurry; debubbling the ferrite slurry and then tape casting it into a green tape; heating the green tape in air to 300-500° C. for 5 h to remove the organic additives from the green tape; sintering the organic additives removed green tape at 900-1000° C. for 2-5 h to obtain ferrite ceramic.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: August 2, 2016
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Shaohua Su, Jinhui Yu
  • Publication number: 20150108697
    Abstract: A method for producing ferrite ceramic includes the steps of providing a ferrite powder; oven-drying the ferrite powder; adding organic additives into the oven-dried powder and mixing them to form a ferrite slurry; debubbling the ferrite slurry and then tape casting it into a green tape; heating the green tape in air to 300-500° C. for 5 h to remove the organic additives from the green tape; sintering the organic additives removed green tape at 900-1000° C. for 2-5 h to obtain ferrite ceramic.
    Type: Application
    Filed: September 15, 2014
    Publication date: April 23, 2015
    Applicant: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Shaohua Su, Jinhui Yu