Patents by Inventor Ho Hak Man

Ho Hak Man 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).

  • Method of saving space occupied by toilet rolls in transportation and storage processes and related special devices
    Patent number: 5186099
    Abstract: A method for substantially saving transportation costs and storage space n transporting and storing toilet rolls. The method comprises the steps of pressing the cylindrical toilet rolls, before transportation and storage, into a flattened shape which reduces the volume occupied by each roll and minimizes the space between adjacent rolls. The next step includes, before usage, inserting a threaded rod into the flattened core, mounting conical pieces on opposite ends of said rod, and screwing one of the conical pieces into the flattened core until the periphery of the core is recovered to the original cylindrical-shape.
    Type: Grant
    Filed: March 18, 1992
    Date of Patent: February 16, 1993
    Assignees: China Henan Light Industrial Products Import and Export Corporation, Rober Ng, Yi Xiao Guang, Cai Qing
    Inventors: Cai Qing, Ho Hak Man, Liu Ming, Yi X. Guang