Abstract: Disclosed is a method of providing potable water that includes providing a filter, passing water through the filter, and removing bacteria and viruses from the water with the filter. The filter comprises a housing having an inlet and an outlet and a filter material disposed within the housing, the filter material formed at least in part from a plurality of filter particles consisting of mesoporous activated carbon wherein at least a portion of the plurality of filter particles is at least partially coated with silver or a silver-containing material. A sum of mesopore and macropore volumes of the filter particles may be between about 0.2 mL/g and about 2 mL/g, wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm, a total pore volume of the filter particles is greater than about 0.
Type:
Grant
Filed:
May 13, 2009
Date of Patent:
July 6, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
Abstract: Disclosed is a method of providing potable water that includes providing a filter, passing water through the filter, and removing bacteria and viruses from the water with the filter. The filter comprises a housing having an inlet and an outlet and a filter material disposed within the housing, the filter material formed at least in part from a plurality of mesoporous wood activated carbon filter particles and particles selected from the group consisting of mesoporous wood activated carbon filter particles coated entirely with a cationic polymer, mesoporous wood activated carbon filter particles partially coated with a cationic polymer, and mixtures thereof. A sum of mesopore and macropore volumes of the filter particles may be between about 0.2 mL/g and about 2 mL/g, wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm, a total pore volume of the filter particles is greater than about 0.
Type:
Grant
Filed:
May 13, 2009
Date of Patent:
June 22, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
Abstract: Disclosed is a method of providing potable water that includes providing a filter, passing water through the filter, and removing bacteria and viruses from the water with the filter. The filter comprises a housing having an inlet and an outlet and a filter material disposed within the housing, the filter material formed at least in part from a plurality of filter particles consisting of mesoporous activated carbon. A sum of mesopore and macropore volumes of the filter particles may be between about 0.2 mL/g and about 2 mL/g, wherein mesopore means an intra-particle pore having a diameter between 2 nm and 50 nm, and macropore means an intra-particle pore having a diameter greater than 50 nm, a total pore volume of the filter particles is greater than about 0.4 mL/g and less than about 3 mL/g, and a ratio of the sum of the mesopore and macropore volumes to the total pore volume of the filter particles is greater than about 0.3.
Type:
Grant
Filed:
May 13, 2009
Date of Patent:
June 22, 2010
Assignee:
The Procter & Gamble Company
Inventors:
Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
Abstract: A filter and filter material for providing or treating potable water is provided. The filter includes a housing having an inlet and an outlet, a filter material disposed within the housing, the filter material formed at least in part from a mixture of a plurality of mesoporous and microporous activated carbon particles. Preferably, at least some of the mesoporous activated carbon filter particles are coated with a cationic polymer, and even more preferably, at least some of the particles are coated with a cationic polymer and silver or a silver containing material. Kits comprising filters and information relating to the reduction, killing or removal of bacteria, viruses, microbials, and TTHM are also provided.
Type:
Grant
Filed:
September 16, 2008
Date of Patent:
May 11, 2010
Assignee:
PUR Water Purification Products, Inc.
Inventors:
Jeannine Rebecca Bahm, Andrew Thomas Pearks, Guillermo Matias Vidal, Dimitris Ioannis Collias, Michael Donovan Mitchell, Robert E. Astle, Katharine L. K. Faye, Robert Andrew Governal, Thomas J. Hamlin, Rebecca A. Lucht, Hemang Patel
Abstract: A fluid container for dispensing a first fluid and a consumable additive. The fluid container includes a first chamber for containing a first fluid and an additive dispensing system. The first chamber is configured such that the first fluid may be dispensed from the first chamber. The additive dispensing system selectively operable to dispense an amount of additive and is not in fluid communication with the first chamber.
Type:
Grant
Filed:
February 3, 2006
Date of Patent:
March 2, 2010
Assignee:
PUR Water Purification, Inc.
Inventors:
Richard Alan Arett, Norman Scott Broyles, Dimitris Ioannis Collias, William Joseph Cruzen, David James Emmons, John Adrew McDaniel
Abstract: A water filter device for treating untreated drinking water, wherein the water filter device may comprise a connector for providing fluid communication between the water filter device and an untreated drinking water source. The water filter device may comprise a low-pressure water for treating untreated drinking water, the water filter may comprise a water filter material. The water filter may comprise a F-BLR of greater than about 2 logs. The water filter device may comprise a storage housing in fluid communication with the low-pressure water filter. The water filter device may comprise an automatic shutoff valve for arresting the flow of treated drinking water into the storage housing. The water filter device may comprise a dispenser for dispensing treated drinking water from the storage housing.
Type:
Grant
Filed:
August 19, 2003
Date of Patent:
November 10, 2009
Assignee:
PUR Water Purification Products, Inc.
Inventors:
John D. Tanner, David James Emmons, Richard P. Riedel
Abstract: A filter for providing potable water is provided. The filter includes a housing having an inlet and an outlet, a filter material disposed within the housing, the filter material formed at least in part from a plurality of mesoporous, basic, and reduced-oxygen activated carbon filter particles. Preferably, at least some of the mesoporous activated carbon filter particles are coated with a cationic polymer, and even more preferably, at least some of the particles are coated with a cationic polymer and silver or a silver containing material. Kits comprising filters and information relating to the killing or removal of bacteria, viruses, and microbials are also provided.
Type:
Grant
Filed:
November 11, 2003
Date of Patent:
November 10, 2009
Assignee:
PUR Water Purification Products Inc.
Inventors:
Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley