Patents by Inventor Rajan G. Rajan

Rajan G. Rajan 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).

  • Patent number: 9090483
    Abstract: The invention provides a water dispensing system comprising a container having a first region adapted to store unfiltered water, a second region adapted to store filtered water, and a spout region, a meter housing adapted to receive a water meter, a reservoir disposed within the first region of the container, a filter coupled to the reservoir, the filter being adapted to filter water flowing from the reservoir into the second region of the container, a valve assembly disposed in the second region of the container, the valve assembly being adapted to dispense filtered water from the second region of the container, and a lid coupled to the reservoir. In addition, the invention provides a system for filtering and testing water, comprising a water filtering system used in combination with a water meter for testing the quality of the effluent.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: July 28, 2015
    Assignee: ZERO TECHNOLOGIES, LLC
    Inventors: Rajan G. Rajan, Mathu Rajan, Raja Rajan, Ken Williams
  • Patent number: 9067805
    Abstract: The invention provides a water dispensing system comprising a container having a first region adapted to store unfiltered water, a second region adapted to store filtered water, and a spout region, a meter housing adapted to receive a water meter, a reservoir disposed within the first region of the container, a filter coupled to the reservoir, the filter being adapted to filter water flowing from the reservoir into the second region of the container, a valve assembly disposed in the second region of the container, the valve assembly being adapted to dispense filtered water from the second region of the container, and a lid coupled to the reservoir. In addition, the invention provides a system for filtering and testing water, comprising a water filtering system used in combination with a water meter for testing the quality of the effluent.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: June 30, 2015
    Assignee: ZERO TECHNOLOGIES, LLC
    Inventors: Rajan G. Rajan, Mathu Rajan, Raja Rajan, Ken Williams
  • Patent number: 8252185
    Abstract: A water treatment apparatus includes a housing comprising multiple housing portions and a plurality of treatment sections disposed within the housing, each treatment section comprising at least one distinct particulate layer. The apparatus is designed so that no water pressure need be applied to force the water through the apparatus, as gravity pulls the water down through the filtering layers. Water may also be force fed through the treatment apparatus; when the water is force fed, the housing portions need not be vertically stacked, but may be configured in any suitable arrangement. The treatment sections are distributed through the various housing portions in logical groups to perform various kinds of filtering. The housing portions are detachable and sealably stackable in multiple configurations, thus passing water through more or fewer treatment layers, depending on the quality of the incoming water.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: August 28, 2012
    Assignee: Zero Technologies, Inc.
    Inventors: Rajan G. Rajan, Mathu G. Rajan
  • Publication number: 20120048787
    Abstract: The invention provides a water dispensing system comprising a container having a first region adapted to store unfiltered water, a second region adapted to store filtered water, and a spout region, a meter housing adapted to receive a water meter, a reservoir disposed within the first region of the container, a filter coupled to the reservoir, the filter being adapted to filter water flowing from the reservoir into the second region of the container, a valve assembly disposed in the second region of the container, the valve assembly being adapted to dispense filtered water from the second region of the container, and a lid coupled to the reservoir. In addition, the invention provides a system for filtering and testing water, comprising a water filtering system used in combination with a water meter for testing the quality of the effluent.
    Type: Application
    Filed: February 19, 2009
    Publication date: March 1, 2012
    Applicant: ZERO TECHNOLOGIES, INC.
    Inventors: Rajan G. Rajan, Mathu Rajan, Raja Rajan, Ken Williams
  • Publication number: 20120018357
    Abstract: The invention provides a water dispensing system comprising a container having a first region adapted to store unfiltered water, a second region adapted to store filtered water, and a spout region, a meter housing adapted to receive a water meter, a reservoir disposed within the first region of the container, a filter coupled to the reservoir, the filter being adapted to filter water flowing from the reservoir into the second region of the container, a valve assembly disposed in the second region of the container, the valve assembly being adapted to dispense filtered water from the second region of the container, and a lid coupled to the reservoir. In addition, the invention provides a system for filtering and testing water, comprising a water filtering system used in combination with a water meter for testing the quality of the effluent.
    Type: Application
    Filed: August 15, 2008
    Publication date: January 26, 2012
    Applicant: ZERO TECHNOLOGIES, INC.
    Inventors: Rajan G. Rajan, Mathu Rajan, Raja Rajan, Ken Williams
  • Publication number: 20080302714
    Abstract: A water treatment apparatus includes a housing comprising multiple housing portions and a plurality of treatment sections disposed within the housing, each treatment section comprising at least one distinct particulate layer. The apparatus is designed so that no water pressure need be applied to force the water through the apparatus, as gravity pulls the water down through the filtering layers. Water may also be force fed through the treatment apparatus; when the water is force fed, the housing portions need not be vertically stacked, but may be configured in any suitable arrangement. The treatment sections are distributed through the various housing portions in logical groups to perform various kinds of filtering. The housing portions are detachable and sealably stackable in multiple configurations, thus passing water through more or fewer treatment layers, depending on the quality of the incoming water.
    Type: Application
    Filed: August 18, 2008
    Publication date: December 11, 2008
    Applicant: ZERO TECHNOLOGIES, INC.
    Inventors: Rajan G. RAJAN, Mathu G. RAJAN
  • Patent number: 7413663
    Abstract: A water treatment apparatus includes a housing comprising multiple housing portions and a plurality of treatment sections disposed within the housing, each treatment section comprising at least one distinct particulate layer. The apparatus is designed so that no water pressure need be applied to force the water through the apparatus, as gravity pulls the water down through the filtering layers. Water may also be force fed through the treatment apparatus; when the water is force fed, the housing portions need not be vertically stacked, but may be configured in any suitable arrangement. The treatment sections are distributed through the various housing portions in logical groups to perform various kinds of filtering. The housing portions are detachable and sealably stackable in multiple configurations, thus passing water through more or fewer treatment layers, depending on the quality of the incoming water.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: August 19, 2008
    Assignee: Zero Technologies, Inc.
    Inventors: Rajan G. Rajan, Mathu G. Rajan
  • Publication number: 20040094465
    Abstract: A water treatment apparatus includes a housing comprising multiple housing portions and a plurality of treatment sections disposed within the housing, each treatment section comprising at least one distinct particulate layer. The apparatus is designed so that no water pressure need be applied to force the water through the apparatus, as gravity pulls the water down through the filtering layers. Water may also be force fed through the treatment apparatus; when the water is force fed, the housing portions need not be vertically stacked, but may be configured in any suitable arrangement. The treatment sections are distributed through the various housing portions in logical groups to perform various kinds of filtering. The housing portions are detachable and sealably stackable in multiple configurations, thus passing water through more or fewer treatment layers, depending on the quality of the incoming water.
    Type: Application
    Filed: April 8, 2003
    Publication date: May 20, 2004
    Inventors: Rajan G. Rajan, Mathu Rajan
  • Patent number: 6572769
    Abstract: A water treatment apparatus including a housing comprising multiple housing portions and a plurality of treatment sections disposed within the housing, each treatment section comprising at least one distinct particulate layer. The apparatus is designed so that no water pressure need be applied to force the water through the apparatus, as gravity pulls the water down through the filtering layers. Water may also be force fed through the treatment apparatus; when the water is force fed, the housing portions need not be vertically stacked, but may be configured in any suitable arrangement. The treatment sections are distributed through the various housing portions in logical groups to perform various kinds of filtering. The housing portions are detachable and sealably stackable in multiple configurations, thus passing water through more or fewer treatment layers, depending on the quality of the incoming water.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: June 3, 2003
    Inventors: Rajan G. Rajan, Mathu G. Rajan
  • Publication number: 20020117436
    Abstract: A water treatment apparatus including a housing comprising multiple housing portions and a plurality of treatment sections disposed within the housing, each treatment section comprising at least one distinct particulate layer. The apparatus is designed so that no water pressure need be applied to force the water through the apparatus, as gravity pulls the water down through the filtering layers. Water may also be force fed through the treatment apparatus; when the water is force fed, the housing portions need not be vertically stacked, but may be configured in any suitable arrangement. The treatment sections are distributed through the various housing portions in logical groups to perform various kinds of filtering. The housing portions are detachable and sealably stackable in multiple configurations, thus passing water through more or fewer treatment layers, depending on the quality of the incoming water.
    Type: Application
    Filed: September 14, 2001
    Publication date: August 29, 2002
    Inventors: Rajan G. Rajan, Mathu G. Rajan
  • Patent number: 5635063
    Abstract: Water treatment apparatus includes a two-piece housing and a stack of discrete filtering layers disposed within the housing including a layer of silver impregnated carbon, a layer of pentavalent iodine impregnated resins and at least one layer of a mixed bed activated resin. The apparatus is designed so that no water pressure need be applied to force the water through the apparatus, as gravity pulls the water down through the filtering layers.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: June 3, 1997
    Inventors: Rajan G. Rajan, Mathu Rajan
  • Patent number: D620304
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: July 27, 2010
    Assignee: Zero Technologies, LLC
    Inventors: Rajan G. Rajan, Mathu Rajan, Raja Rajan, Ken Williams