Patents by Inventor Ziqian Wu

Ziqian Wu 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).

  • FILTER HOLDING SYSTEM FOR WELDING MASK
    Publication number: 20130081190
    Abstract: A filter holding system for holding an optical filter to a mask casing of a welding mask. The filter holding system can include a holding frame body configured for supporting and accommodating the optical filter, and a connecting mechanism which is provided on the holding frame body and is configured for connecting or disconnecting the holding frame body to or from the mask casing. The connecting mechanism can have a disconnect position and a connect position. In the disconnect position, the connecting mechanism disconnects the holding frame body from the mask casing, and in the connect position, the connecting mechanism connects the holding frame body and the mask casing. A welding mask can comprise a mask casing, a headgear, a protective film, an optical filter and a filter holding system.
    Type: Application
    Filed: September 29, 2011
    Publication date: April 4, 2013
    Applicant: Tecmen Electronics Co., Ltd.
    Inventor: Ziqian Wu
  • Welding helmet
    Patent number: D521190
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: May 16, 2006
    Assignee: Central Purchasing, LLC
    Inventor: Ziqian Wu
  • Welding mask
    Patent number: D489492
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: May 4, 2004
    Inventor: Ziqian Wu
  • Welding helmet
    Patent number: D654224
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: February 14, 2012
    Assignee: Tecmen Electronics Co., Ltd.
    Inventor: Ziqian Wu
  • Welding helmet
    Patent number: D654225
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: February 14, 2012
    Assignee: Tecmen Electronics Co., Ltd.
    Inventor: Ziqian Wu
  • Welding helmet
    Patent number: D654226
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: February 14, 2012
    Assignee: Tecmen Electronics Co., Ltd.
    Inventor: Ziqian Wu
  • Welding helmet
    Patent number: D654634
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: February 21, 2012
    Assignee: Tecmen Electronics Co., Ltd.
    Inventor: Ziqian Wu