Patents by Inventor Ronald V. Davis
Ronald V. Davis 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).
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Patent number: 10071923Abstract: The removal of oxoanions from an aqueous stream having a concentration of a metal cation and a concentration of an oxoanion that varies over time may involve continuously monitoring the concentration of the metal cation and the concentration of the oxoanion to provide a current metal cation concentration and a current oxoanion concentration. A metal cation source and an aluminum reagent may be added to the aqueous stream based on the measured current metal cation concentration and the current oxoanion concentration. The amount of the metal cation source and the aluminum reagent added to the stream may be effective to reduce the concentration of the oxoanion in the aqueous stream below a target threshold.Type: GrantFiled: September 5, 2014Date of Patent: September 11, 2018Assignee: Ecolab USA Inc.Inventors: Nicholas S. Ergang, Ronald V. Davis
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Patent number: 9920395Abstract: A method of recovering gold from refractory ore containing a carbonaceous material, a sulfide and gold is provided. Gypsum seed crystals are added to a slurry containing a roasted refractory ore or a pressure-oxidized refractory ore to decrease gypsum encapsulation of gold and improve gold recovery.Type: GrantFiled: September 16, 2015Date of Patent: March 20, 2018Assignee: Ecolab USA Inc.Inventors: Ronald V. Davis, Daniel E. Child, Walter Gerlach
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Patent number: 9683153Abstract: The invention provides methods and compositions for freeze conditioning particulating materials. The invention includes the use of the combination of crude glycerin with flowback or produced water. This combination prevents unwanted agglomeration when frozen. This combination also is non-corrosive and best of all facilitates the safe clean recycling of what would otherwise be unwanted dangerous waste material.Type: GrantFiled: March 30, 2015Date of Patent: June 20, 2017Assignee: Ecolab USA Inc.Inventors: Ronald V. Davis, Jing Wang, Stephen J. Blubaugh, Walter Gerlach
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Publication number: 20160289522Abstract: The invention provides methods and compositions for freeze conditioning particulating materials. The invention includes the use of the combination of crude glycerin with flowback or produced water. This combination prevents unwanted agglomeration when frozen. This combination also is non-corrosive and best of all facilitates the safe clean recycling of what would otherwise be unwanted dangerous waste material.Type: ApplicationFiled: March 30, 2015Publication date: October 6, 2016Applicant: ECOLAB USA INC.Inventors: Ronald V. Davis, Jing Wang, Stephen J. Blubaugh, Walter Gerlach
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Patent number: 9389209Abstract: To determine the concentration of an oxoanion in an aqueous solution, an aluminum reagent is added to the aqueous solution to form an optical analysis solution. Addition of the aluminum reagent may or may not form an alumino-oxoanion hydroxide hydrate precipitate. Light is directed into the optical analysis solution to determine an optical response of the optical analysis solution. Thereafter, the concentration of the oxoanion in the aqueous solution is determined based on the optical response of the optical analysis solution. For example, the concentration of the oxoanion may be calculated using a molar ratio relating oxoanion concentration to aluminum reagent concentration, when the aluminum reagent concentration corresponds to an inflection point of the optical response of the optical analysis solution.Type: GrantFiled: September 5, 2014Date of Patent: July 12, 2016Assignee: ECOLAB USA INC.Inventors: Nicholas S. Ergang, Ronald V. Davis
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Publication number: 20160083816Abstract: A method of recovering gold from refractory ore containing a carbonaceous material, a sulfide and gold is provided. Gypsum seed crystals are added to a slurry containing a roasted refractory ore or a pressure-oxidized refractory ore to decrease gypsum encapsulation of gold and improve gold recovery.Type: ApplicationFiled: September 16, 2015Publication date: March 24, 2016Inventors: Ronald V. Davis, Daniel E. Child, Walter Gerlach
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Publication number: 20160069849Abstract: To determine the concentration of an oxoanion in an aqueous solution, an aluminum reagent is added to the aqueous solution to form an optical analysis solution. Addition of the aluminum reagent may or may not form an alumino-oxoanion hydroxide hydrate precipitate. Light is directed into the optical analysis solution to determine an optical response of the optical analysis solution. Thereafter, the concentration of the oxoanion in the aqueous solution is determined based on the optical response of the optical analysis solution. For example, the concentration of the oxoanion may be calculated using a molar ratio relating oxoanion concentration to aluminum reagent concentration, when the aluminum reagent concentration corresponds to an inflection point of the optical response of the optical analysis solution.Type: ApplicationFiled: September 5, 2014Publication date: March 10, 2016Inventors: Nicholas S. Ergang, Ronald V. Davis
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Publication number: 20160068414Abstract: The removal of oxoanions from an aqueous stream having a concentration of a metal cation and a concentration of an oxoanion that varies over time may involve continuously monitoring the concentration of the metal cation and the concentration of the oxoanion to provide a current metal cation concentration and a current oxoanion concentration. A metal cation source and an aluminum reagent may be added to the aqueous stream based on the measured current metal cation concentration and the current oxoanion concentration. The amount of the metal cation source and the aluminum reagent added to the stream may be effective to reduce the concentration of the oxoanion in the aqueous stream below a target threshold.Type: ApplicationFiled: September 5, 2014Publication date: March 10, 2016Inventors: Nicholas S. Ergang, Ronald V. Davis
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Patent number: 9187327Abstract: A method for minimizing the addition of water to a phosphoric acid production process is described. The method uses phosphoric acid to make down a flocculant that is added to the process in order to promote filtration or clarification of crude phosphoric acid. Preferably, the phosphoric acid is a crude, clarified phosphoric acid that is recycled from the phosphoric acid production process itself.Type: GrantFiled: January 4, 2011Date of Patent: November 17, 2015Assignee: Nalco CompanyInventors: Ronald V. Davis, Wayne L. Moss, Michael G. Strominger, Randon Renzello, Thomas A. Faigl, Daniel N. T. Hay
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Publication number: 20140251906Abstract: The invention provides methods and compositions for detection and removal of sulfate from a liquid. The method provides much faster removal of sulfate than the prior art does and does so while requiring the use of far less aluminum. The method involves sequentially adding an acidic to neutral pH generating aluminum agent to the liquid, an alkaline pH generating aluminum agent to the liquid, after having added the acidic to neutral pH generating aluminum agent, and an alkaline calcium agent to the liquid. The most efficient rate possible can be obtained by also using a fluorophore to precisely determine the amount of sulfate in the liquid.Type: ApplicationFiled: March 6, 2013Publication date: September 11, 2014Applicant: Ecolab USA Inc.Inventors: Nicholas S. Ergang, Ronald V. Davis
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Patent number: 8465667Abstract: The invention is directed towards methods and compositions for treating piles of low-rank coal to inhibit its spontaneous combustion. The method involves applying to the low-rank coal a composition containing VAE and crude glycerin. The composition prevents water from evaporating out of the low-rank coal. This prevents the formation within the low-rank coal of hollow openings which are a huge factor in causing its spontaneous combustion. The composition has better performance than its ingredients do alone. In fact it is so effective that certain cumbersome low-rank coal-handling methods, such as FIFO recordkeeping and inventorying, not using pinch points, or only using elbow-free equipment can be disregarded when the composition is used.Type: GrantFiled: April 4, 2012Date of Patent: June 18, 2013Assignee: Nalco CompanyInventors: Ronald V. Davis, Stephen J. Blubaugh
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Publication number: 20120247006Abstract: The invention is directed towards methods and compositions for treating piles of low-rank coal to inhibit its spontaneous combustion. The method involves applying to the low-rank coal a composition containing VAE and crude glycerin. The composition prevents water from evaporating out of the low-rank coal. This prevents the formation within the low-rank coal of hollow openings which are a huge factor in causing its spontaneous combustion. The composition has better performance than its ingredients do alone. In fact it is so effective that certain cumbersome low-rank coal-handling methods, such as FIFO recordkeeping and inventorying, not using pinch points, or only using elbow-free equipment can be disregarded when the composition is used.Type: ApplicationFiled: April 4, 2012Publication date: October 4, 2012Inventors: Ronald V. Davis, Stephen J. Blubaugh
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Publication number: 20120171099Abstract: A method for minimizing the addition of water to a phosphoric acid production process is described. The method uses phosphoric acid to make down a flocculant that is added to the process in order to promote filtration or clarification of crude phosphoric acid. Preferably, the phosphoric acid is a crude, clarified phosphoric acid that is recycled from the phosphoric acid production process itself.Type: ApplicationFiled: January 4, 2011Publication date: July 5, 2012Inventors: Ronald V. Davis, Wayne L. Moss, Michael G. Strominger, Randon Renzello, Thomas A. Faigl, Daniel N.T. Hay
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Patent number: 7772009Abstract: A method for monitoring a chemical component in an industrial water system comprises irradiating a liquid sample from an industrial water system, containing at least one chemical component to be monitored, with light from an excitation light source. Room temperature phosphorescence emitted from the sample is detected after irradiation. The concentration of the chemical component to be monitored is then calculated from the detected room temperature phosphorescence. The liquid sample includes at least one room temperature phosphorescent material (RTPM) and at least one heavy atom perturber (HAP) dissolved therein. The HAP is present in the sample at a concentration sufficient to induce phosphorescence activity in the RTPM. The liquid sample is irradiated in a manner sufficient to induce the RTPM within the sample to emit room temperature phosphorescence, and the calculated concentration of the chemical component to be monitored is a function of the room temperature phosphorescence intensity or temporal metric.Type: GrantFiled: November 22, 2005Date of Patent: August 10, 2010Assignee: SCR Research, LLCInventors: Ronald V. Davis, Donald E. Govoni, Michael James Fehr
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Patent number: 6964691Abstract: A method of preparing a synthetic fuel from coal comprising applying to the coal an aqueous emulsion of one or more reactive polymers and thoroughly mixing the coal to yield a complete reaction of the coal with the reactive polymers, wherein the reactive polymers are selected from the group consisting of ethylene/vinyl acetate copolymers, ethylene/vinyl alcohol copolymers, poly(acrylic acid), poly(vinyl alcohol), vinyl alcohol/vinyl acetate copolymers, poly(vinyl acetate), vinyl acetate/acrylic acid copolymers, poly(vinyl acetate/acrylic acid/ethylene), acrylic acid/acrylamide copolymers and poly(acrylamide).Type: GrantFiled: September 22, 2003Date of Patent: November 15, 2005Assignee: Nalco CompanyInventors: Donald E. Govoni, Ronald V. Davis
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Publication number: 20040241873Abstract: Phosphorescent taggants are used for characterizing and optimizing the mass distribution of a liquid composition deposited on a solid substrate and of components within a blend of particulate materials. The taggant is deposited on the surface of a solid substrate in the presence of a liquid composition to form a tagged substrate, and upon exposure to light for a sufficient period of time, the tagged substrate emits phosphorescence, which is detected visually, photographically or photometrically. The spacial pattern of phosphorescence emitted from the tagged substrate is indicative of the mass distribution of the liquid composition on the solid substrate or of the tagged substrate within a blend of the tagged substrate with another particulate material.Type: ApplicationFiled: May 28, 2004Publication date: December 2, 2004Inventors: Ronald V Davis, Donald E Govoni
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Patent number: 6641624Abstract: A method of preparing a synthetic fuel from coal comprising reacting the coal with a polymer composition comprising an aqueous solution or an aqueous emulsion of one or more reactive polymers, the reactive polymers selected from the group consisting of ethylene/vinyl acetate copolymers, ethylene/vinyl alcohol copolymers, poly(acrylic acid), poly(vinyl alcohol), vinyl alcohol/vinyl acetate copolymers, poly(vinyl acetate), vinyl acetate/acrylic acid copolymers, poly(vinyl acetate/acrylic acid/ethylene), acrylic acid/acrylamide copolymers and poly(acrylamide).Type: GrantFiled: September 11, 2002Date of Patent: November 4, 2003Assignee: Ondeo Nalco CompanyInventors: Donald E. Govoni, Ronald V. Davis
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Patent number: 6440689Abstract: A method for monitoring the microbiological contamination of opaque media is described and claimed. In this method, a Fluorogenic Dye is added to an Aliquot of opaque medium. After a certain time period, a fluorometer capable of measuring fluorescent signals in an opaque medium is used to measure the fluorogenic signals of the Fluorogenic Dye and the Reacted Fluorogenic Dye. A Useful RATIO of the fluorescent signal of the Reacted Fluorogenic Dye to the fluorescent signal of the Fluorogenic Dye is calculated and the information gleaned from the RATIO is used to ascertain the state of microbiological contamination in the opaque medium.Type: GrantFiled: June 28, 2001Date of Patent: August 27, 2002Assignee: Ondeo Nalco CompanyInventors: Rodney H. Banks, Nancy L. Casselman, Mita Chattoraj, Ronald V. Davis, Michael J. Fehr, Sasireka S. Ramesh, David P. Workman
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Publication number: 20020042092Abstract: A method for monitoring the microbiological contamination of opaque media is described and claimed. In this method, a Fluorogenic Dye is added to an Aliquot of opaque medium. After a certain time period, a fluorometer capable of measuring fluorescent signals in an opaque medium is used to measure the fluorogenic signals of the Fluorogenic Dye and the Reacted Fluorogenic Dye. A Useful RATIO of the fluorescent signal of the Reacted Fluorogenic Dye to the fluorescent signal of the Fluorogenic Dye is calculated and the information gleaned from the RATIO is used to ascertain the state of microbiological contamination in the opaque medium.Type: ApplicationFiled: June 28, 2001Publication date: April 11, 2002Inventors: Rodney H. Banks, Nancy L. Casselman, Mita Chattoraj, Ronald V. Davis, Michael J. Fehr, Sasireka S. Ramesh, David P. Workman
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Patent number: 6280635Abstract: An autocycle method to control a cooling water system comprising the steps of: a) adding a treatment product to said cooling water system, with said treatment product comprising inert tracer and tagged treatment polymer in a set proportion; b) providing a sufficient number of fluorometers, c) using said sufficient number of fluorometers to measure the fluorescent signal of said inert tracer and the fluorescent signal of said tagged treatment polymer in the water from the cooling water system; d) using these measured fluorescent signals from step c) to determine the amount of said tagged treatment polymer present in said cooling water system; e) comparing the amount of said tagged treatment polymer present to the amount of tagged treatment polymer being fed into the system to determine the consumption of said tagged treatment polymer; and f) using said consumption of said tagged treatment polymer to control the concentration cycles of said cooling water system, with the proviso that said control is impleType: GrantFiled: May 1, 2000Date of Patent: August 28, 2001Assignee: Nalco Chemical CompanyInventors: Barbara E. Moriarty, Dennis P. Bakalik, Ronald V. Davis, John E. Hoots, Robert W. Shiely