Patents by Inventor Man Chiu Li

Man Chiu Li 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).

  • Publication number: 20130077897
    Abstract: A waterproof storage bag which comprises a bag body having an open end and a bag opening provided at the open end of the bag body to seal the bag body. The bag opening has inner surfaces which are smooth surfaces made of smooth and soft plastic material and the inner surfaces do not contain any self-adhesive material and are not disposed with any additional adhesive material thereon. A multi-porous resilient member is provided inside the bag body. It is an object of the present invention to provide a waterproof bag which could indicate to a user whether its waterproof function is still functioning properly. It has the advantages of simple structure, easy operation and low manufacturing costs.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 28, 2013
    Applicant: POTTER INDUSTRIES LIMITED
    Inventor: Man Chiu LI
  • Publication number: 20110253920
    Abstract: The present invention relates to a vacuum means for storage bags which comprises an air exhaustion opening and an air exhaustion valve, both of which are disposed on an outer surface of the storage bag; the air exhaustion opening and the air exhaustion valve are interconnected; the air exhaustion valve comprises two or more layers of soft sealing plates, and the layers of soft sealing plates overlap with one another and their edges are connected with the storage bag in a sealed manner; ventilation openings separated from one another are opened on each of the two or more layers of soft sealing plates, and each of the two or more layers of soft sealing plates are interconnected with the air exhaustion opening at areas where the ventilating openings are opened. The air exhaustion valve of the present invention mainly attains sealing effect by adhering the soft sealing plates with one another. As the soft sealing plates are softer and more resilient, it is easier for them to resume their original shapes.
    Type: Application
    Filed: April 20, 2010
    Publication date: October 20, 2011
    Applicant: Potter Industries Limited
    Inventor: Man Chiu LI
  • Patent number: 7387440
    Abstract: The present invention relates to a vacuum storage bag for daily use. The vacuum storage bag comprises a sealable body with an opening at one end and a pressed and sealed end at the other end; the sealable body is formed by two layers and each layer is made of two layers; the inner surfaces of the opening are coated with a layer of adhesive material; and the sealed and pressed end has a tubular opening at its bottom. It is convenient to use and of simple construction. It is suitable for storing articles in a vacuum state with limited space and preventing the articles from mildewing.
    Type: Grant
    Filed: February 4, 2002
    Date of Patent: June 17, 2008
    Inventor: Man Chiu Li