Patents Assigned to Dober Chemical Corporation
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Publication number: 20070000831Abstract: A container for releasing a chemical additive into a coolant composition comprises a coolant-impermeable casing having a hollow interior and an additive composition comprising at least one coolant soluble additive. The additive is held within the container by at least one coolant-permeable element provided at or near an opening in the casing and is effective to provide for release of additive(s) into the coolant composition. Methods of releasing additives into coolant compositions are also provided.Type: ApplicationFiled: September 5, 2006Publication date: January 4, 2007Applicants: Fleetguard, Inc., Dober Chemical CorporationInventors: Dennis Kelly, Joseph Drozd, Thomas Blakemore, Doug Hudgens, Harold Martin
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Publication number: 20060016463Abstract: Methods and compositions useful for removing a titanium dioxide-containing material located on a surface, for example, a surface of a piece of process equipment, are disclosed. The methods provide for contacting the titanium dioxide-containing material located on the surface with an aqueous composition containing less than about 30% by weight of an alkali component.Type: ApplicationFiled: July 22, 2004Publication date: January 26, 2006Applicant: Dober Chemical CorporationInventor: Joseph Drozd
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Publication number: 20050023505Abstract: A controlled-release additive composition for use in aqueous systems. The composition comprises a core containing at least one additive component and a polymeric coating encapsulating said core. The controlled released cooling additive composition slowly releases the additive components to aqueous system, thereby delivering an effective concentration level of additive components over an extended period.Type: ApplicationFiled: August 31, 2004Publication date: February 3, 2005Applicant: Dober Chemical CorporationInventors: Thomas Blakemore, Yu-Sen Chen
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Publication number: 20040091654Abstract: A container for releasing a chemical additive into a coolant composition comprises a coolant-impermeable casing having a hollow interior and an additive composition comprising at least one coolant soluble additive. The additive is held within the container by at least one coolant-permeable element provided at or near an opening in the casing and is effective to provide for release of additive(s) into the coolant composition. Methods of releasing additives into coolant compositions are also provided.Type: ApplicationFiled: November 3, 2003Publication date: May 13, 2004Applicants: Fleetguard, Inc., Dober Chemical CorporationInventors: Dennis Kelly, Joseph C. Drozd, Thomas Blakemore, Doug Hudgens, Harold R. Martin
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Publication number: 20030218150Abstract: A chemical composition and method of deployment into a coolant or coolant systems to provide at least one benefit to the system. The additive compositions includes a silicate component and a silicate stabilizer, the compositions being in the form of a solid, a non-flowable semi-solid or a flowable semi-solid which is dissolved into a coolant and enters the cooling system so as to provide at least one benefit to a coolant system when released, for example, to protect an engine. The method of deployment into the coolant and subsequently the cooling systems includes injecting or dissolving the additive into the coolant, forming the additive to the housing of the system or forming the coolant to the filter located in the housing of the cooling system.Type: ApplicationFiled: February 26, 2003Publication date: November 27, 2003Applicant: Dober Chemical CorporationInventors: Thomas J. Blakemore, Yu-Sen Chen, Heather Michalesko
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Publication number: 20030122104Abstract: A liquid replacement system is provided for introducing additives to an open recirculating system or a closed loop boiler water system in a controlled manner. The liquid replacement system comprises a make-up line and an additive system disposed therein. A make-up liquid enters into the make-up line where the additive system is structured to provide a controlled release of an additive to the make-up liquid, and the make-up liquid carries the additives into the open recirculating system or a closed loop boiler water system. The liquid replacement system allows for controlled release of additive components to the open recirculating system or the closed loop boiler water system, thereby delivering an effective concentration of additive components over an extended period.Type: ApplicationFiled: February 12, 2003Publication date: July 3, 2003Applicant: Dober Chemical CorporationInventors: Thomas J. Blakemore, Yu-Sen Chen, Dennis Kelly
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Publication number: 20030053927Abstract: Provided are compositions and methods for releasing oxygen scavengers into a coolant. The compositions include a controlled release component and an oxygen scavenger component which includes at least one oxygen scavenger. Methods and devices for releasing oxygen scavengers into a coolant are also provided.Type: ApplicationFiled: October 15, 2002Publication date: March 20, 2003Applicant: Dober Chemical CorporationInventors: Joseph C. Drozd, Thomas J. Blakemore, Yu-Sen Chen
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Publication number: 20020153505Abstract: A controlled-release additive composition for use in aqueous systems. The composition comprises a core containing at least one additive component and a polymeric coating encapsulating said core. The controlled released cooling additive composition slowly releases the additive components to aqueous system, thereby delivering an effective concentration level of additive components over an extended period.Type: ApplicationFiled: February 12, 2001Publication date: October 24, 2002Applicant: Dober Chemical CorporationInventors: Thomas J. Blakemore, Yu-Sen Chen
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Patent number: 5763377Abstract: Methods and compositions useful for removing a titanium dioxide-containing material located on a surface, for example, a surface of a piece of process equipment, are disclosed. In one embodiment, the present methods provide for contacting the titanium dioxide-containing material located on the surface with a composition comprising at least about 20% by weight of water, an acid component in an amount effective to reduce the adhesion between the titanium dioxide-containing material and the surface; and an organic component in an amount effective to disperse the titanium dioxide-containing material in the composition.Type: GrantFiled: June 17, 1996Date of Patent: June 9, 1998Assignee: Dober Chemical CorporationInventors: Daniel J. Dobrez, Mark R. Lalinsky, Robert J. Rybarski
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Patent number: 5531905Abstract: A system and method are disclosed for controlling the amount of cationic coagulant to be introduced into a laundry waste water having a content of non-solid fats, oils and/or grease (FOG) which is to be reduced.Type: GrantFiled: December 2, 1994Date of Patent: July 2, 1996Assignee: Dober Chemical CorporationInventors: John G. Dobrez, Frank T. Prendergast
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Patent number: 5396178Abstract: Apparatus and methods for determining that a piece of equipment, for example, used in the biotechnology or pharmaceutical industries, is clean are disclosed. The invention involves measuring the electrical conductivity of an aqueous liquid medium both before and after the medium is used to contact, e.g., rinse, the piece of equipment. The equipment is determined to be clean when these two measured electrical conductivities are substantially equal.Type: GrantFiled: May 18, 1992Date of Patent: March 7, 1995Assignee: Dober Chemical CorporationInventor: Robert J. Rybarski
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Patent number: 5353821Abstract: An apparatus useful for providing a plurality of chemical compositions useful to clean an item, e.g., a tank, comprises a plurality of reservoirs each containing a concentrated form of a different chemical composition and each having an outlet through which the concentrate exits the reservoir; a subsystem for providing diluent to the concentrates which exit the reservoir to form the chemical compositions; and a control subsystem to automatically control the time during which each concentrate exits from each reservoir. A method for providing chemical compositions useful to clean an item is also disclosed.Type: GrantFiled: October 22, 1993Date of Patent: October 11, 1994Assignee: Dober Chemical CorporationInventor: Robert V. Franklin
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Patent number: 5282889Abstract: An apparatus useful for providing a plurality of chemical compositions useful to clean an item, e. g., a tank, comprises a plurality of reservoirs each containing a concentrated form of a different chemical composition and each having an outlet through which the concentrate exits the reservoir; a subsystem for providing diluent to the concentrates which exit the reservoir to form the chemical compositions; and a control subsystem to automatically control the time during which each concentrate exits from each reservoir. A method for providing chemical compositions useful to clean an item is also disclosed.Type: GrantFiled: April 7, 1992Date of Patent: February 1, 1994Assignee: Dober Chemical CorporationInventor: Robert V. Franklin
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Patent number: 5246590Abstract: A system is disclosed for controlling the amount of treatment composition, e.g., cationic coagulant, to be introduced into an aqueous medium, e.g., a laundry waste water, having a content of non-solid fats, oils and/or grease (FOG) which is to be reduced. This system comprises a detector adapted to determine the electric charge value of a material comprising the aqueous medium having a FOG which is to be reduced and to provide a signal indicative of this electric charge value and an automatic processor provided with a relationship of the amount of treatment composition to be introduced into the aqueous medium to reduce the FOG of the aqueous medium to a given level as a function of the signal, and adapted to receive the signal and to provide a control signal to a source of treatment composition to control the amount of treatment composition introduced from the source of treatment composition into the aqueous medium.Type: GrantFiled: September 15, 1992Date of Patent: September 21, 1993Assignee: Dober Chemical CorporationInventors: John G. Dobrez, Michael A. Reeks
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Patent number: 5160439Abstract: A system is disclosed for controlling the amount of treatment composition, e.g., cationic coagulant, to be introduced into an aqueous medium, e.g., a laundry waste water, having a content of fats, oils and/or grease (FOG) which is to be reduced. This system comprises a plurality of detectors each of which is adapted to determine a parameter, other than the FOG level, of a material comprising the components of the aqueous medium and to provide a determined signal indicative of the determined parameter; and an automatic processor provided with a relationship of the amount of treatment composition to be introduced into the aqueous medium to reduce the FOG of the aqueous medium to a given level as a function of the plurality of determined signals, and adapted to receive the plurality of determined signals and to provide a control signal to a source of treatment composition to control the amount of treatment composition introduced from the source of treatment composition into the aqueous medium.Type: GrantFiled: June 21, 1991Date of Patent: November 3, 1992Assignee: Dober Chemical CorporationInventors: John G. Dobrez, Michael A. Reeks
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Patent number: 4980075Abstract: In a method for manufacturing a circulating coolant system filter which includes a filter medium and a space into which a supplemental coolant additive can be placed to provide at least one beneficial property to the circulating coolant, the improvement comprising: automatically introducing the supplemental coolant additive into the space in the form of a liquid-powdered solids slurry.Type: GrantFiled: January 13, 1989Date of Patent: December 25, 1990Assignee: Dober Chemical CorporationInventors: John F. Dobrez, David Ganbarg
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Patent number: 4915119Abstract: An apparatus useful for providing a plurality of chemical compositions useful to clean an item, e.g., a tank, comprises a plurality of reservoirs each containing a concentrated form of a different chemical composition and each having an outlet through which the concentrate exits the reservoir; a subsystem for providing diluent to the concentrates which exit the reservoir to form the chemical compositions; and a control subsystem to automatically control the time during which each concentrate exits from each reservoir. A method for providing chemical compositions useful to clean an item is also disclosed.Type: GrantFiled: April 21, 1986Date of Patent: April 10, 1990Assignee: Dober Chemical CorporationInventor: Robert V. Franklin
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Patent number: 4842731Abstract: In a method for manufacturing a circulating coolant system filter which includes assembling a filter medium and a filter canister into which a supplemental coolant additive can be placed to provide at least one beneficial property to the circulating coolant, the improvement comprising: automatically introducing the supplemental coolant additive into the filter canister in the form of a liquid-powdered solids slurry.Type: GrantFiled: February 8, 1988Date of Patent: June 27, 1989Assignee: Dober Chemical CorporationInventors: John F. Dobrez, David Ganbarg
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Patent number: 4357243Abstract: A method for reclaiming an aqueous emulsion useful as a metal-working lubricant/coolant which is contaminated with particles of at least one metal comprises contacting the contaminated emulsion with at least one metal solubilizing agent at metal solubilizing conditions to solubilize at least a portion of the metal particles. The thus contacted emulsions have improved suitability as a metal-working lubricant/coolant relative to the contaminated emulsion.Type: GrantFiled: November 17, 1980Date of Patent: November 2, 1982Assignee: Dober Chemical CorporationInventors: John F. Dobrez, Jose T. Jacob