Patents by Inventor Shitai Wang

Shitai Wang 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: 11918034
    Abstract: A device and method for preparing a fully granular cigarette/filter rod, and a prepared fully granular cigarette/filter rod are disclosed. In certain embodiments, negative pressure is used to adhere granular material onto a mesh-type conveyor belt. The granular material is preliminarily formed into fully granular cigarette/filter rod material by means of a pre-forming apparatus; the fully granular cigarette/filter rod material, traveling with the mesh-type conveyor belt, enters into a forming cavity, and undergoes heating and humidifying treatment, and a continuous solid porous substance is formed; the continuous solid porous substance is moved into the cooling/drying cavity, drying and cooling treatment are performed under the action of negative pressure, and a fully granular cigarette/filter rod with strong adhesion, porosity, permeability, and appropriate moisture is obtained.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: March 5, 2024
    Assignee: CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
    Inventors: Yong Jin, Qian Chen, Ke Li, Hongmei Fan, Saibo Yu, Shitai Wang, Chao Tan, Haifeng Tan, Qi Liu
  • Publication number: 20220279840
    Abstract: A device and method for preparing a fully granular cigarette/filter rod, and a prepared fully granular cigarette/filter rod are disclosed. In certain embodiments, negative pressure is used to adhere granular material onto a mesh-type conveyor belt. The granular material is preliminarily formed into fully granular cigarette/filter rod material by means of a pre-forming apparatus; the fully granular cigarette/filter rod material, traveling with the mesh-type conveyor belt, enters into a forming cavity, and undergoes heating and humidifying treatment, and a continuous solid porous substance is formed; the continuous solid porous substance is moved into the cooling/drying cavity, drying and cooling treatment are performed under the action of negative pressure, and a fully granular cigarette/filter rod with strong adhesion, porosity, permeability, and appropriate moisture is obtained.
    Type: Application
    Filed: December 23, 2019
    Publication date: September 8, 2022
    Applicant: CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
    Inventors: Yong Jin, Qian Chen, Ke Li, Hongmei Fan, Saibo Yu, Shitai Wang, Chao Tan, Haifeng Tan, Qi Liu
  • Publication number: 20220022528
    Abstract: A molding apparatus, a cigarette filter rod and a preparation method thereof are disclosed. The molding apparatus comprises a single-screw extrusion system and a cooling setting system. The single-screw extrusion system comprises a feeder and an extruder. The feeder is arranged on the extruder. The extruder comprises a cylinder. A heater is arranged outside the cylinder. A screw is arranged inside the cylinder, and a mouth mold is arranged at one end of the cylinder. The cooling setting system comprises a round tube and a cooler. The cooler (6) is arranged outside the round tube. One end of the round tube is butted with the mouth mold of the extruder; and multiple groups of grooves are formed on threads of the head of the screw.
    Type: Application
    Filed: December 14, 2018
    Publication date: January 27, 2022
    Applicant: CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
    Inventors: Qian Chen, Yong Jin, Ke Li, Shitai Wang, Chao Tan, Saibo Yu, Haifeng Tan, Hongmei Fan, Qi Liu
  • Publication number: 20210401030
    Abstract: A low-temperature smoking body and a preparation method thereof are disclosed. The low-temperature smoking body includes tobacco particles. The tobacco particle comprise includes a particle body and a shell wrapped on the particle body. A carrier is distributed in the particle body and/or the shell. The carrier includes at least one of a raw tobacco material, a non-tobacco material, and a porous material. The carrier carries a smoking agent, and the smoking agent includes a tobacco extract and/or an atomizer. In addition, a preparation method of the low-temperature smoking body is further disclosed. The low-temperature smoking body has better smoking stability and uniformity, and the tobacco particles having core-shell structures can effectively solve the problem of liquid leakage.
    Type: Application
    Filed: March 19, 2019
    Publication date: December 30, 2021
    Applicant: CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
    Inventors: Qian Chen, Ke Li, Yong Jin, Saibo Yu, Hongmei Fan, Shitai Wang, Chao Tan, Haifeng Tan, Qi Liu, Jianhua Yi, Wen Du, Xinqiang Yin, Xinliang Tan
  • Publication number: 20210267269
    Abstract: A cooling filter rod and an application thereof are disclosed. The filter rod comprises a hollow tube (1). The inside of the hollow tube (1) is provided with at least one plate (2) which partition the inside of the hollow tube and is perpendicular to the axis of the hollow tube (1). The area of the plate (2) is the same as the cross-sectional area of a hollow portion of the hollow tube (1) Each plate (2) is independently provided with at least one through hole (3). The cooling filter rod reduces the adsorption of cigarette smoke, greatly lowers the smoke temperature felt by mouth, improves the sensory quality of cigarettes, and is suitable for application in new heat-not-burn cigarettes.
    Type: Application
    Filed: June 21, 2019
    Publication date: September 2, 2021
    Applicant: CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
    Inventors: Haifeng Tan, Yong Jin, Hongmei Fan, Shitai Wang, Qian Chen, Ke Li, Saibo Yu, Qi Liu, Chao Tan
  • Publication number: 20210204595
    Abstract: A cooling filter rod, an application, and a cigarette are provided. The cooling filter rod is mainly formed by cooling particles. The cooling particle includes a particle body and a shell coated on the particle body. The shell or the particle body contains a phase change material. The phase change material is coated on the surface of the particle material to form cooling particles, and the cooling particles are integrally formed into a cooling filter rod, which can be directly used for cigarette production after being compounded with conventional filter rods. The cooling effect can be controlled according to the amount of the phase change material and the cooling filter rod. Such a filter rod can realize industrial production and has low cost and good cooling effect.
    Type: Application
    Filed: March 19, 2019
    Publication date: July 8, 2021
    Applicant: CHINA TOBACCO HUNAN INDUSTRIAL CO., LTD.
    Inventors: Qian Chen, Yong Jin, Haifeng Tan, Ke Li, Shitai Wang, Chao Tan, Saibo Yu, Hongmei Fan, Qi Liu, Jianhua Yi