Patents Assigned to KDF Fluid Treatment, Inc.
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Patent number: 6197204Abstract: The concentration of dissolved arsenic in water is reduced by contacting the water containing the arsenic with zinc oxide.Type: GrantFiled: January 21, 2000Date of Patent: March 6, 2001Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett
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Patent number: 5951869Abstract: A fluid treating method for treating fluid to reduce the concentration of undesirable nitrogen compounds and/or metal constituents contained therein is disclosed. The method utilizes a bed of metal particulate matter. The metal particulate matter comprises copper. Preferably, the metal particulate also contains zinc and can be in the form of an alloy. The fluid treated is often water, preferably, drinking water. Among the nitrogen compounds that may be effected by the present method are inorganic nitrates and nitrites and/or metals may be aluminum, arsenic, barium, cadmium, chromium, copper, gold, iron, lead, mercury, selenium and silver.Type: GrantFiled: May 28, 1998Date of Patent: September 14, 1999Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett
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Patent number: 5833859Abstract: A fluid treating method for treating fluid to kill or inhibit bacteria and/or to reduce the concentration of undesirable inorganic constituents including chlorine and metal constituents contained therein is disclosed. The method utilizes a bed of metal particulate matter. The metal particulate matter comprises copper. Preferably, the metal particulate also contains zinc and can be in the form of an alloy. The fluid treated is often water, preferably, drinking water. Among the metals that may be effected by the present method are aluminum, arsenic, barium, cadmium, chromium, copper, gold, iron, lead, mercury, selenium and silver.Type: GrantFiled: October 31, 1996Date of Patent: November 10, 1998Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett
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Patent number: 5599454Abstract: A fluid treating method for treating fluid to kill or inhibit bacteria and/or to reduce the concentration of undesirable metal constituents contained therein is disclosed. The method utilizes a bed of metal particulate matter. The metal particulate matter comprises copper. Preferably, the metal particulate also contains zinc and can be in the form of an alloy. The fluid treated is often water, preferably, drinking water. Among the metals that may be effected by the present method are aluminum, arsenic, barium, cadmium, chromium, copper, gold, iron, lead, mercury, selenium and silver.Type: GrantFiled: March 18, 1996Date of Patent: February 4, 1997Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett
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Patent number: 5510034Abstract: A fluid treating method for treating fluid to reduce the concentration of undesirable metal constituents contained therein is disclosed. The method utilizes a bed of metal particulate matter. The metal particulate matter comprises copper. Preferably, the metal particulate also contains zinc and can be in the form of an alloy. The fluid treated is often water, preferably, drinking water. Among the metals that may be effected by the present method are aluminum, arsenic, barium, cadmium, chromium, copper, gold, iron, lead, mercury, selenium and silver.Type: GrantFiled: March 29, 1995Date of Patent: April 23, 1996Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett
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Patent number: 5433856Abstract: A fluid treating method for treating water to reduce the hardness therein is disclosed. The method utilizes a bed of finely divided metal particulate matter. The metal particulate matter comprises copper, and may also contain zinc and can be in the form of an alloy.Type: GrantFiled: May 6, 1994Date of Patent: July 18, 1995Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett
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Patent number: 5415770Abstract: A fluid treating apparatus and method for treating fluid to remove undesirable constituents contained therein are disclosed. The apparatus and method include employing a bed of metal particulate matter. The metal particulate matter is preferably chosen from metals having: favorable redox potentials relative to the redox potentials of the undesirable constituents so as to establish conditions for spontaneous oxidation and reduction reactions between the undesirable constituents and the metal particles and/or having bacteriostatic or bactericidal properties in the case where the undesirable constituent sought to be treated is a bacteria.Type: GrantFiled: June 22, 1994Date of Patent: May 16, 1995Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett
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Patent number: 5314623Abstract: A fluid treating method for treating water to reduce the hardness therein is disclosed. The method utilizes a bed of metal particulate matter. The metal particulate matter comprises copper, and preferably also contains zinc and can be in the form of an alloy.Type: GrantFiled: July 28, 1993Date of Patent: May 24, 1994Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett
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Patent number: 5275737Abstract: A fluid treating method for treating fluid to reduce the concentration of undesirable metal constituents contained therein is disclosed. The method utilizes a bed of metal particulate matter. The metal particulate matter comprises copper. Preferably, the metal particulate also contains zinc and can be in the form of an alloy. The fluid treated is often water, preferably, drinking water. Among the metals that may be effected by the present method are aluminum, arsenic, barium, cadmium, chromium, copper, gold, iron, lead, mercury, selenium and silver.Type: GrantFiled: November 19, 1992Date of Patent: January 4, 1994Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett
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Patent number: 5269932Abstract: A method for treating fluid to remove hydrogen sulfide and sulfur dioxide is disclosed. The method includes passing fluid containing the hydrogen sulfide and/or sulfur dioxide through a bed of metal particulate matter. The metal particulate matter is preferably chosen from metals having favorable redox potentials relative to the redox potentials of these undesirable constituents so as to establish conditions for spontaneous oxidation and reduction reactions between the undesirable constituents and the metal particles.Type: GrantFiled: June 15, 1992Date of Patent: December 14, 1993Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett
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Patent number: 5198118Abstract: A fluid treating apparatus and method for treating fluid to remove undesirable constituents contained therein are disclosed. The apparatus and method include employing a bed of metal particulate matter. The metal particulate matter is preferably chosen from metals having favorable redox potentials relative to the redox potentials of the undesirable constituents so as to establish conditions for spontaneous oxidation and reduction reactions between the undesirable constituents and the metal particles and/or having bacteriostatic or bactericidal properties in the case where the undesirable constituent sought to be treated is a bacteria.Type: GrantFiled: June 15, 1992Date of Patent: March 30, 1993Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett
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Patent number: 5135654Abstract: A fluid treating method for treating fluid to reduce the concentration of undesirable metal constitutents contained therein is disclosed. The method utilizes a bed of metal particulate matter. The metal particulate matter comprises copper. Preferably, the metal particulate also contains zinc and can be in the form of an alloy. The fluid treated is often water, preferably, drinking water. Among the metals that may be effected by the present method are aluminum, arsenic, barium, cadmium, chromium, copper, gold, iron, lead, mercury, selenium and silver.Type: GrantFiled: September 24, 1991Date of Patent: August 4, 1992Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett
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Patent number: 5122274Abstract: A method for treating fluid to remove hydrogen sulfide and sulfur dioxide is disclosed. The method includes passing fluid containing the hydrogen sulfide and/or sulfur dioxide through a bed of metal particulate matter. The metal particulate matter is preferably chosen from metals having favorable redox potentials relative to the redox potentials of these undesirable constituents so as to establish conditions for spontaneous oxidation and reduction reactions between the undesirable constituents and the metal particles.Type: GrantFiled: April 12, 1991Date of Patent: June 16, 1992Assignee: KDF Fluid Treatment, Inc.Inventor: Don E. Heskett