Patents by Inventor Hubbard H. Donald

Hubbard H. Donald 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: 6982033
    Abstract: The Aerobic Treatment Plant with Filter Pipe (“ATPFP”) processes sewage for buildings not connected to a municipal sewer system. It employs a multi-stage process for cleaning sewage in a single, light-weight, easy-to-install unit. Sewage is initially cleaned in the aerobic tank, which is divided into an inner chamber and an outer chamber by a funnel-shaped clarifier hanging down in the aerobic tank, with the opening in the bottom of the clarifier held above the bottom of the aerobic tank. Air droplines hang down in the outer chamber of the aerobic tank, so that sewage in the outer chamber is aerated, stimulating aerobic microorganisms which digest the sewage. The sewage in the outer chamber then moves into the inner chamber inside the clarifier where gravity separates solids from the effluent. This cleaned effluent is then drained to the post-treatment tank for additional cleaning, where it may be chlorinated before it is filtered to screen out debris and then stored for discharge.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: January 3, 2006
    Inventors: Hubbard H. Donald, George E. Johnson
  • Patent number: 6827850
    Abstract: The Diffusion Bar Aerobic Treatment Plant (“DBATP”) is a device which processes sewage for buildings which are not connected to municipal sewer lines. It is comprised of a pre-tank which captures trash and allows anaerobic microorganisms to begin breaking down the sewage, an aerobic tank where aerobic microorganisms digest the sewage, and a post-tank which acts as a gravity separating clarifier in which solid particulate contaminants settle downward, leaving a clean effluent for discharge to the environment. The aerobic tank encompasses a diffusion bar, which emits air bubbles that activate and stimulate the aerobic microorganisms.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: December 7, 2004
    Inventors: Hubbard H. Donald, George E. Johnson
  • Publication number: 20030047500
    Abstract: The Diffusion Bar Aerobic Treatment Plant (“DBATP”) is a device which processes sewage for buildings which are not connected to municipal sewer lines. It is comprised of a pre-tank which captures trash and allows anaerobic microorganisms to begin breaking down the sewage, an aerobic tank where aerobic microorganisms digest the sewage, and a post-tank which acts as a gravity separating clarifier in which solid particulate contaminants settle downward, leaving a clean effluent for discharge to the environment. The aerobic tank encompasses a diffusion bar, which emits air bubbles that activate and stimulate the aerobic microorganisms.
    Type: Application
    Filed: August 15, 2002
    Publication date: March 13, 2003
    Inventors: Hubbard H. Donald, George E. Johnson
  • Publication number: 20030029783
    Abstract: The Aerobic Treatment Plant with Filter Pipe (“ATPFP”) processes sewage for buildings not connected to a municipal sewer system. It employs a multi-stage process for cleaning sewage in a single, light-weight, easy-to-install unit. Sewage is initially cleaned in the aerobic tank, which is divided into an inner chamber and an outer chamber by a funnel-shaped clarifier hanging down in the aerobic tank, with the opening in the bottom of the clarifier held above the bottom of the aerobic tank. Air droplines hang down in the outer chamber of the aerobic tank, so that sewage in the outer chamber is aerated, stimulating aerobic microorganisms which digest the sewage. The sewage in the outer chamber then moves into the inner chamber inside the clarifier where gravity separates solids from the effluent. This cleaned effluent is then drained to the post-treatment tank for additional cleaning, where it may be chlorinated before it is filtered to screen out debris and then stored for discharge.
    Type: Application
    Filed: July 12, 2002
    Publication date: February 13, 2003
    Inventors: Hubbard H. Donald, George E. Johnson
  • Patent number: 6406619
    Abstract: The Three Stage Sewage Treatment Plant is an uniquely designed three stage sewage waste water cleaning device for use in homes and other buildings which are not attached to municipal sewer systems. It employs both aerobic and anaerobic microorganisms to break down sewage, in addition to gravity separation of solids from the effluent. The cleaning process is centered around a cylindrical aerobic tank which is divided into an inner and an outer chamber by a funnel shaped clarifier. In the outer chamber of the aerobic tank, air droplines aerate the sewage, promoting the aerobic microorganisms that break down the sewage, and create turbulence. In the inner chamber, the sewage is gravity separated, such that solid particles are extracted from a cleaned effluent. The device is comprised of a pre-treatment tank, which screens out solid particles and allows for the preliminary anaerobic cleaning process, and a post-treatment tank, where the effluent is chlorinated and stored, in addition to the aerobic tank.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: June 18, 2002
    Inventors: Hubbard H. Donald, George E. Johnson
  • Patent number: 6228258
    Abstract: The Sewage Treatment System with Chlorinator (“STSC”) processes sewage for buildings not connected to a municipal sewer system. It employs a two stage process for cleaning sewage in a single, light-weight, easy-to-install unit. Sewage is initially cleaned in the aerobic tank, which is divided into an inner chamber and an outer chamber by a funnel-shaped clarifier hanging down in the aerobic tank, with the opening in the bottom of the clarifier held above the bottom of the aerobic tank. Air droplines hang down in the outer chamber of the aerobic tank, so that sewage in the outer chamber is aerated, stimulating aerobic microorganisms which digest the sewage. The sewage in the outer chamber then moves into the inner chamber inside the clarifier where gravity separates solids from the effluent. This cleaned effluent is then drained to the post-treatment tank for the second cleaning stage, where it is chlorinated and stored for discharge.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: May 8, 2001
    Inventors: Hubbard H. Donald, George E. Johnson
  • Patent number: 6200472
    Abstract: The Three Stage Sewage Treatment System (“TSSTS”) processes sewage for buildings not connected to a municipal sewer system. It employs a three stage process for cleaning sewage in a single, light-weight, easy-to-install unit. Sewage is initially cleaned anaerobically in the pre-treatment tank as gravity acts to separate solids from the effluent. Sewage then flows into the aerobic tank for further cleaning by aerobic microorganisms and continued gravity separation of solid contaminants from the effluent. The aerobic tank is divided into an inner chamber and an outer chamber by a funnel-shaped clarifier. In the TSSTS, the clarifier is a separate piece with a lip around the top of the funnel-shaped main body. The lip of the clarifier rests atop the sidewalls of the aerobic tank, and the clarifier hangs down in the aerobic tank, with an opening in the bottom of the clarifier held above the bottom of the aerobic tank.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: March 13, 2001
    Inventors: Hubbard H. Donald, George E. Johnson
  • Patent number: D510757
    Type: Grant
    Filed: March 2, 2004
    Date of Patent: October 18, 2005
    Inventors: Hubbard H. Donald, George E. Johnson
  • Patent number: D539382
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: March 27, 2007
    Inventors: Hubbard H. Donald, George E. Johnson
  • Patent number: D539383
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: March 27, 2007
    Inventors: Hubbard H. Donald, George E. Johnson