Patents by Inventor Quoc Hien Nguyen

Quoc Hien Nguyen 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).

  • Method of manufacturing a watch component
    Patent number: 11745536
    Abstract: Method of manufacturing a watch component (10) for a timepiece, wherein it comprises a first stage of manufacturing a watch component (10) comprising a first surface (1), in which there is arranged at least one recess (20), that is to say a surface recessed from the first surface (1), and wherein it comprises a second finishing stage the watch component, leading to a change in the surface condition, more particularly the roughness, more particularly measured by the parameters Ra and/or Str, and/or the gloss, of the first surface (1) but not of the at least one recess (20) or of a portion exclusively of this at least one recess (20).
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: September 5, 2023
    Assignee: ROLEX SA
    Inventors: Carine Bienvenu, Patrice Nagel, Quoc-Hien Nguyen, Alexandra Roulet
  • METHOD OF MANUFACTURING A WATCH COMPONENT
    Publication number: 20200086678
    Abstract: Method of manufacturing a watch component (10) for a timepiece, wherein it comprises a first stage of manufacturing a watch component (10) comprising a first surface (1), in which there is arranged at least one recess (20), that is to say a surface recessed from the first surface (1), and wherein it comprises a second finishing stage the watch component, leading to a change in the surface condition, more particularly the roughness, more particularly measured by the parameters Ra and/or Str, and/or the gloss, of the first surface (1) but not of the at least one recess (20) or of a portion exclusively of this at least one recess (20).
    Type: Application
    Filed: September 11, 2019
    Publication date: March 19, 2020
    Applicant: ROLEX SA
    Inventors: Carine Bienvenu, Patrice Nagel, Quoc-Hien Nguyen, Alexandra Roulet
  • Plant growth promoter
    Patent number: 6117815
    Abstract: Sodium alginate which is an oceanic natural resource is exposed, either in aqueous solution or in a dry state, to a radiation so that it is decomposed to a lower-molecular weight polysaccharide, which is processed into a dilute aqueous solution that is either used as a hydroponic solution or foliar spraying so as to promote their growth.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: September 12, 2000
    Assignee: Agency of Industrial Science and Technology, Japan Atomic Energy Research Institute
    Inventors: Keizo Makuuchi, Fumio Yoshii, Naotsugu Nagasawa, Tamikazu Kume, Quoc Hien Nguyen