Patents by Inventor Lai Yan Chan

Lai Yan Chan 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 and device for treatment of human excrement
    Patent number: 9113755
    Abstract: A method for treatment of human excrement comprises the following steps: (1) providing a chamber (5) having a top opening through which excrement enters the chamber (5); (2) allowing solid excrement to form a layer on a porous plate (6) inside the chamber (5) by gravity wherein excrement is stored firstly at front storing region (13) and secondly at rear storing region (14), and allowing urine to fall down into the urine storing region (15) through perforations in the porous plate (6); (3) ventilating the interior of chamber (5) by a ventilation system, and providing an indirect heat source (7) inside the chamber (5). A device for treatment of human excrement comprises the chamber (5), the porous plate (6) with the front storing region (13) and the rear storing region (14), the urine storing region (15), the ventilation system and the indirect heat source (7).
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: August 25, 2015
    Inventors: Derek Lam, Lai Yan Chan
  • METHOD AND DEVICE FOR TREATMENT OF HUMAN EXCREMENT
    Publication number: 20120031855
    Abstract: A method for treatment of human excrement comprises the following steps: (1) providing a chamber (5) having a top opening through which excrement enters the chamber (5); (2) allowing solid excrement to form a layer on a porous plate (6) inside the chamber (5) by gravity wherein excrement is stored firstly at front storing region (13) and secondly at rear storing region (14), and allowing urine to fall down into the urine storing region (15) through perforations in the porous plate (6); (3) ventilating the interior of chamber (5) by a ventilation system, and providing an indirect heat source (7) inside the chamber (5). A device for treatment of human excrement comprises the chamber (5), the porous plate (6) with the front storing region (13) and the rear storing region (14), the urine storing region (15), the ventilation system and the indirect heat source (7).
    Type: Application
    Filed: March 23, 2010
    Publication date: February 9, 2012
    Inventors: Derek Lam, Lai Yan Chan