Patents by Inventor Yehua LIU

Yehua LIU 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: 11976192
    Abstract: Disclosed are a flame retardant and fully biodegradable plastic, a manufacturing method of the same, and an application of the same. A flame retardant and fully biodegradable plastic, prepared from following components with amount by weight: a biodegradable plastic: 70-95 parts; a flame retardant: 1-15 parts; an anti-oxidant: 0-1 part; a lubricant: 0-2 parts; a compatibility agent: 0-3 parts; and a color powder: 0-5 parts; wherein the biodegradable plastic consists of PBS, PBAT, and PLA, and the weight ratio thereof is PLA:PBAT:PBS=1:(1-4):(0-1); the flame retardant consists of decabromodiphenyl ether and diantimony trioxide, and the weight ratio thereof is decabromodiphenyl ether:diantimony trioxide=1:(1-10).
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: May 7, 2024
    Assignees: HUIZHOU NORTHERN FOREST CO., LTD., FOSHAN BIO-PLUS ADVANCED MATERIALS CO., LTD.
    Inventors: Yongsheng Wu, Jun Li, Yanzhi Li, Yehua Liu
  • Publication number: 20220403160
    Abstract: Disclosed are a flame retardant and fully biodegradable plastic, a manufacturing method of the same, and an application of the same. A flame retardant and fully biodegradable plastic, prepared from following components with amount by weight: a biodegradable plastic: 70-95 parts; a flame retardant: 1-15 parts; an anti-oxidant: 0-1 part; a lubricant: 0-2 parts; a compatibility agent: 0-3 parts; and a color powder: 0-5 parts; wherein the biodegradable plastic consists of PBS, PBAT, and PLA, and the weight ratio thereof is PLA:PBAT:PBS=1:(1-4):(0-1); the flame retardant consists of decabromodiphenyl ether and diantimony trioxide, and the weight ratio thereof is decabromodiphenyl ether:diantimony trioxide=1:(1-10).
    Type: Application
    Filed: September 15, 2021
    Publication date: December 22, 2022
    Inventors: Yongsheng WU, Jun LI, Yanzhi LI, Yehua LIU
  • Patent number: 8671537
    Abstract: A method and device for harmless treatment and recycling of waste refrigerators. Plastic parts, electrical boxes, compressors, and condensers are disassembled at a disassembling station. Refrigerants from compressors are recycled at a fluoride-extracting station. Refrigerator bodies and doors are transferred to a double shaft shredder and a rolling crusher for crushing. Crushed materials are sorted out by wind force, by a self-discharge type iron remover made of permanent magnet and a cylindrical iron remover for magnetic separation. The device is placed in an enclosed workshop equipped with a multistage ventilation system, a protective device of nitrogen, a device for spraying, dedusting, and cooling, and an on-line detection and alarm control device for cyclopentane gas concentration, polyurethane dust concentration, and temperature. The method and device have low manufacturing and operating costs and are dustproof, explosion proof, environmentally friendly and has excellent recycling effects.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: March 18, 2014
    Inventors: Guoying Ming, Yehua Liu, Yuping Zhang, Qilin Li, Peng Li
  • Publication number: 20120174369
    Abstract: A method and device for harmless treatment and recycling of waste refrigerators. Plastic parts, electrical boxes, compressors, and condensers are disassembled at a disassembling station. Refrigerants from compressors are recycled at a fluoride-extracting station. Refrigerator bodies and doors are transferred to a double shaft shredder and a rolling crusher for crushing. Crushed materials are sorted out by wind force, by a self-discharge type iron remover made of permanent magnet and a cylindrical iron remover for magnetic separation. The device is placed in an enclosed workshop equipped with a multistage ventilation system, a protective device of nitrogen, a device for spraying, dedusting, and cooling, and an on-line detection and alarm control device for cyclopentane gas concentration, polyurethane dust concentration, and temperature. The method and device have low manufacturing and operating costs and are dustproof, explosion proof, environmentally friendly and has excellent recycling effects.
    Type: Application
    Filed: March 19, 2012
    Publication date: July 12, 2012
    Inventors: Guoying MING, Yehua LIU, Yuping ZHANG, Qilin LI, Peng LI
  • Patent number: D1055752
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: December 31, 2024
    Assignee: HUIZHOU NORTHERN FOREST CO., LTD.
    Inventor: Yehua Liu