Patents by Inventor Wang ZHENGGUO

Wang ZHENGGUO 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).

  • Retractable utility knife
    Patent number: 9370869
    Abstract: A utility knife has a handle and a blade holder that holds a utility blade for selective removal and replacement of the utility blade. The blade holder is pivotally carried by the handle for pivotal movement in an arcuate path relative to the handle between a retracted position and an extended position.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: June 21, 2016
    Assignee: Meridian International Co., Ltd.
    Inventors: Zhang Hongquan, Wang Zhengguo
  • RETRACTABLE UTILITY KNIFE
    Publication number: 20160001452
    Abstract: A utility knife has a handle and a blade holder that holds a utility blade for selective removal and replacement of the utility blade. The blade holder is pivotally carried by the handle for pivotal movement in an arcuate path relative to the handle between a retracted position and an extended position.
    Type: Application
    Filed: September 17, 2015
    Publication date: January 7, 2016
    Inventors: Zhang HONGQUAN, Wang ZHENGGUO
  • Retractable utility knife
    Patent number: 9174347
    Abstract: A utility knife has a handle and a blade holder that holds a utility blade for selective removal and replacement of the utility blade. The blade holder is pivotally carried by the handle for pivotal movement in an arcuate path relative to the handle between a retracted position and an extended position.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: November 3, 2015
    Assignee: MERIDIAN INTERNATIONAL CO., LTD.
    Inventors: Zhang Hongquan, Wang Zhengguo
  • RETRACTABLE UTILITY KNIFE
    Publication number: 20130247382
    Abstract: A utility knife has a handle and a blade holder that holds a utility blade for selective removal and replacement of the utility blade. The blade holder is pivotally carried by the handle for pivotal movement in an arcuate path relative to the handle between a retracted position and an extended position.
    Type: Application
    Filed: March 22, 2013
    Publication date: September 26, 2013
    Applicant: Meridian International Co., Ltd.
    Inventors: Zhang HONGQUAN, Wang ZHENGGUO