Patents by Inventor Piyush Narendra Zaveri

Piyush Narendra Zaveri 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: 7749394
    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
  • Patent number: 7740766
    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
  • Patent number: 7740765
    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
  • Patent number: 7614507
    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
  • Patent number: 7614506
    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.
    Type: Grant
    Filed: June 18, 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
  • Patent number: 7614508
    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 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
  • Publication number: 20090230061
    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: Application
    Filed: May 13, 2009
    Publication date: September 17, 2009
    Inventors: Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Wolley
  • Publication number: 20090218292
    Abstract: Disclosed is a method of providing portable 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: Application
    Filed: May 13, 2009
    Publication date: September 3, 2009
    Inventors: Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
  • Publication number: 20090218291
    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: Application
    Filed: May 13, 2009
    Publication date: September 3, 2009
    Inventors: Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
  • Patent number: 7108440
    Abstract: An applicator (10) for distributing a substance onto a target surface, said applicator including a first side (24) having a first internal surface (32) and a first external surface (31), a second side (26) having a second internal surface (34) and a second external surface (33) and a flexible film dosing reservoir (30) containing a product. The flexible film dosing reservoir (30) is disposed between said first external surface (31) of said first side (24) and said second internal surface (34) of said second side (26), said product adapted to be release via application of pressure to said reservoir (30).
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: September 19, 2006
    Assignee: The Procter & Gamble Company
    Inventors: Dana Paul Gruenbacher, James Herbert Davis, Thomas James Manske, Jr., Kevin Joe Fields, Piyush Narendra Zaveri, Gary Curtis Joseph, Dean Arthur Zimmerman
  • Patent number: 7021848
    Abstract: A semi-enclosed applicator (10) for distributing a substance onto a target surface is disclosed having a first side (24) having a first internal surface (32) and a first external surface (31); a second side (26) having a second internal surface (34) and a second external surface (33); an internal cavity (29) between the first and second internal surfaces that is externally accessible, and a temperature changing element. The flexible film pouch (30) contains a product located proximately to the first side (24).
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: April 4, 2006
    Assignee: The Procter & Gamble Company
    Inventors: Dana Paul Gruenbacher, James Herbert Davis, Kevin Joe Fields, Thomas James Manske, Jr., Piyush Narendra Zaveri, Gary Curtis Joseph
  • Patent number: 6811338
    Abstract: A disposable, semi-enclosed applicator for distributing a substance onto a target surface is disclosed. The applicator has a first side, a second side, and an internal cavity between the first and second sides. The applicator is provided with at least one opening so that the intemnal cavity is externally accessible. Further, the applicator has a ratio of absorbency of the second side to the first side of at about 1.5.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: November 2, 2004
    Assignee: The Procter & Gamble Company
    Inventors: Thomas James Manske, Jr., Dana Paul Gruenbacher, James Herbert Davis, Gary Curtis Joseph, Piyush Narendra Zaveri
  • Publication number: 20040164018
    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 mateial 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: Application
    Filed: November 11, 2003
    Publication date: August 26, 2004
    Applicant: The Procter & Gamble Company
    Inventors: Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
  • Publication number: 20040159596
    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 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: Application
    Filed: November 11, 2003
    Publication date: August 19, 2004
    Inventors: Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
  • Publication number: 20030217963
    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 mateial formed at least in part from a plurality of mesoporous, basic, and reduced-oxygen activated carbon filter particles.
    Type: Application
    Filed: June 18, 2003
    Publication date: November 27, 2003
    Applicant: The Procter & Gamble Company
    Inventors: Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
  • Publication number: 20030217967
    Abstract: A process for producing a water filter material is provided. The process includes the steps of providing a plurality of mesoporous activated carbon particles, and treating said plurality of mesoporous activated carbon particles to produce a plurality of mesoporous activated carbon particles having a bulk oxygen percentage by weight of less than about 2.3%.
    Type: Application
    Filed: June 18, 2003
    Publication date: November 27, 2003
    Applicant: The Procter & Gamble Company
    Inventors: Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley, Thomas Joseph Wehmeier
  • Publication number: 20030096703
    Abstract: A process for producing a water filter material is provided. The process includes the steps of providing a plurality of carbon particles having a point of zero charge of less than about 7, wherein the sum of the mesopore and macropore volumes of the plurality of filter particles is greater than about 0.12 mL/g. The plurality of carbon particles are exposed to a converting agent and heated in a furnace after the step of exposing.
    Type: Application
    Filed: August 23, 2001
    Publication date: May 22, 2003
    Applicant: The Procter & Gamble Company
    Inventors: Michael Donovan Mitchell, Dimitris Ioannis Collias, David William Biorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
  • Patent number: 6547063
    Abstract: An article for the delivery of personal care foams including a package comprising a container having flexible, deformable walls, an opening portion, a first sponge and a foaming composition. The package also includes at least one temperature changing element. The temperature changing element may include an anhydrous reaction, heats of solution, oxidation reactions, crystallization, electro-chemical heaters, zeolite-liquid systems and heats of neutralization. Further, the container may also include a second sponge.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: April 15, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Piyush Narendra Zaveri, Gary Curtis Joseph, Jennifer Sue Dwyer, James Anthony Wilson, Alic Anthony Scott, Dennis Eugene Kuhlman, Raymond Edward Bolich, Charlene Marie Stevenot
  • Publication number: 20030038084
    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 which is formed at least in part from a plurality of filter particles. The filter particles have a point of zero charge greater than about 7 and the sum of the mesopore and macropore volumes of the plurality of filter particles is greater than about 0.12 mL/g.
    Type: Application
    Filed: August 23, 2001
    Publication date: February 27, 2003
    Applicant: The Procter & Gamble Company
    Inventors: Michael Donovan Mitchell, Dimitrls Ioannis Collias, David William Bjorkquist, Piyush Narendra Zaveri, Matthew Morgan Woolley
  • Patent number: 6484514
    Abstract: A temperature modifying system for heating or cooling a product including a flexible outer container containing a product and a self-enclosed temperature-changing element is disclosed. The temperature-changing element includes a flexible pouch at least partially immersed in said product. The flexible film pouch may have two components separated by a rupturable barrier that is adapted to burst under an application of pressure allowing the two components to combine or react in an exothermic or endothermic event. The flexible film pouch may alternatively include a saturated salt solution that generates as it drops out of solution.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: November 26, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Gary Curtis Joseph, Piyush Narendra Zaveri