Patents Assigned to Microporous Technology (Ningbo) Limited
  • Writing instrument having an ink balance mechanism
    Patent number: 9266380
    Abstract: A writing instrument is provided with a barrel including a bottom opening; a partition disposed in the barrel to divide the barrel into an upper ink reservoir filled with ink and a lower storage filled with an absorbent material; a writing member partially disposed in the absorbent material and extending out of the bottom opening; and a conveying line disposed through the partition. The conveying line includes a venting channel and an ink conveying channel. Each of the venting channel and the ink conveying channel communicate with both the ink and the absorbent material. A smooth writing can be carried out.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: February 23, 2016
    Assignees: NINGBO WUYUN PEN MANUFACTURING CO., LTD., MICROPOROUS TECHNOLOGY (NINGBO) LIMITED
    Inventors: Liping Wang, Yang Wen
  • Writing instrument having an ink balance mechanism
    Publication number: 20150063894
    Abstract: A writing instrument is provided with a barrel including a bottom opening; a partition disposed in the barrel to divide the barrel into an upper ink reservoir filled with ink and a lower storage filled with an absorbent material; a writing member partially disposed in the absorbent material and extending out of the bottom opening; and a conveying line disposed through the partition. The conveying line includes a venting channel and an ink conveying channel. Each of the venting channel and the ink conveying channel communicate with both the ink and the absorbent material. A smooth writing can be carried out.
    Type: Application
    Filed: January 7, 2014
    Publication date: March 5, 2015
    Applicants: Microporous Technology (Ningbo) Limited, Ningbo Wuyun Pen Manufacturing Co., Ltd.
    Inventors: Yang Wen, Liping Wang