Patents by Inventor Andrew D. Kurtz
Andrew D. Kurtz 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: 9056780Abstract: A boundary layer carbonation process for producing sodium bicarbonate crystals having specific surface area in the range 0.4 m2/g to 2.5 m2/g from Trona, wherein in one embodiment the process comprises the steps of: providing Trona particles having a particle size range of ?4+120 mesh; pre-wetting the Trona particles with water to provide a plurality of pre-wetted Trona particles each having a liquid water solution boundary layer deposited thereon; and carbonating the pre-wetted Trona particles across the water boundary layer to provide a product comprising sodium bicarbonate crystals.Type: GrantFiled: July 10, 2014Date of Patent: June 16, 2015Assignee: CHURCH & DWIGHT CO., INC.Inventors: Dragomir M. Bracilovic, Andrew D. Kurtz, Joseph A. Paluzzi, Zbigniew M. Senk
-
Publication number: 20140322111Abstract: A boundary layer carbonation process for producing sodium bicarbonate crystals having specific surface area in the range 0.4 m2/g to 2.5 m2/g from Trona, wherein in one embodiment the process comprises the steps of: providing Trona particles having a particle size range of ?4+120 mesh; pre-wetting the Trona particles with water to provide a plurality of pre-wetted Trona particles each having a liquid water solution boundary layer deposited thereon; and carbonating the pre-wetted Trona particles across the water boundary layer to provide a product comprising sodium bicarbonate crystals.Type: ApplicationFiled: July 10, 2014Publication date: October 30, 2014Applicant: CHURCH & DWIGHT CO., INC.Inventors: Dragomir M. Bracilovic, Andrew D. Kurtz, Joseph A. Paluzzi, Zbigniew M. Senk
-
Patent number: 8795615Abstract: A boundary layer carbonation process for producing sodium bicarbonate crystals having specific surface area in the range 0.4 m2/g to 2.5 m2/g from Trona, wherein in one embodiment the process comprises the steps of: providing Trona particles having a particle size range of ?4 +120 mesh; pre-wetting the Trona particles with water to provide a plurality of pre-wetted Trona particles each having a liquid water solution boundary layer deposited thereon; and carbonating the pre-wetted Trona particles across the water boundary layer to provide a product comprising sodium bicarbonate crystals.Type: GrantFiled: November 30, 2012Date of Patent: August 5, 2014Assignee: Church & Dwight Co., Inc.Inventors: Dragomir M. Bracilovic, Andrew D. Kurtz, Joseph A. Paluzzi, Zbignew M. Senk
-
Patent number: 8409533Abstract: A boundary layer carbonation process for producing sodium bicarbonate crystals having specific surface area in the range 0.4 m2/g to 2.5 m2/g from Trona, wherein in one embodiment the process comprises the steps of: providing Trona particles having a particle size range of ?4+120 mesh; pre-wetting the Trona particles with water to provide a plurality of pre-wetted Trona particles each having a liquid water solution boundary layer deposited thereon; and carbonating the pre-wetted Trona particles across the water boundary layer to provide a product comprising sodium bicarbonate crystals.Type: GrantFiled: January 13, 2012Date of Patent: April 2, 2013Assignee: Church & Dwight Co., Inc.Inventors: Dragomir M. Bracilovic, Andrew D. Kurtz, Joseph Paluzzi, Zbigniew M. Senk
-
Patent number: 7255841Abstract: A method of producing sodium bicarbonate having a high degree of purity and obtaining a net reduction in effluent waste water, as compared to prior processes, when starting from trona ore is disclosed. The process entails utilizing the waste-water effluent stream from the conversion of trona ore to sodium carbonate as the feed for the conversion of sodium carbonate to sodium bicarbonate.Type: GrantFiled: September 29, 2003Date of Patent: August 14, 2007Assignee: Church & Dwight Co., Inc.Inventor: Andrew D. Kurtz
-
Publication number: 20040057892Abstract: A method of producing sodium bicarbonate having a high degree of purity and obtaining a net reduction in effluent waste water, as compared to prior processes, when starting from trona ore is disclosed. The process entails utilizing the waste-water effluent stream from the conversion of trona ore to sodium carbonate as the feed for the conversion of sodium carbonate to sodium bicarbonate.Type: ApplicationFiled: September 29, 2003Publication date: March 25, 2004Inventor: Andrew D. Kurtz
-
Publication number: 20030017099Abstract: A method of producing additional sodium bicarbonate having a high degree of purity and obtaining a net reduction in effluent waste water, as compared to prior processes, when starting from trona ore is disclosed. The process entails utilizing the waste-water effluent stream from the conversion of trona ore to sodium carbonate as the feed for the conversion of sodium carbonate to sodium bicarbonate.Type: ApplicationFiled: July 20, 2001Publication date: January 23, 2003Applicant: Church & Dwight Co., Inc.Inventor: Andrew D. Kurtz
-
Patent number: 5674529Abstract: Multiparticulate controlled release preparations incorporating an alkalinizing potassium salt, preferably potassium bicarbonate, as an active ingredient, which are suitable for forming pharmaceutical dosage forms for oral administration. Such dosage forms are useful for potassium supplementation and for the treatment of degenerative bone or cardiovascular diseases, e.g., osteoporosis and hypertension.Type: GrantFiled: June 6, 1995Date of Patent: October 7, 1997Assignee: Church & Dwight Co., Inc.Inventors: Herman Marder, Lawrence Kirschner, John J. Steinke, Andrew D. Kurtz, Poul Bertelsen, Nils Gjerlov Hansen, Thyge Borup Hjorth
-
Patent number: 5445805Abstract: A large size, small surface area, granular crystalline potassium bicarbonate product suitable for application as an active ingredient in pharmaceutical oral unit dosage forms useful for the treatment of various degenerative bone and cardiovascular diseases, particularly osteoporosis or hypertension, comprising potassium bicarbonate crystals having a mean particle size of at least 350 microns and a specific B.E.T. surface area less than 0.02 m.sup.2 /gram. A process for preparing such product is further provided, in which a solution of potassium bicarbonate is fed to a slurry of potassium bicarbonate crystals in a crystallizer and the temperatures and concentrations of the potassium bicarbonate in the feed solution and the crystallizer slurry are so regulated, and the residence time and degree of agitation in the crystallizer are so controlled, that the desired large size, small surface area potassium bicarbonate crystals are produced.Type: GrantFiled: May 6, 1993Date of Patent: August 29, 1995Assignee: Church & Dwight Co., Inc.Inventors: William Zuccarello, Andrew D. Kurtz, Lawrence Kirschner, Herman Marder
-
Patent number: 5322532Abstract: A blast media for stripping contaminants from a substrate comprises abrasive particles which are formed by agglomerating fine particles of sodium bicarbonate with an aqueous binder solution of sodium carbonate to form composite particles of sodium bicarbonate and sodium sesquicarbonate which is formed by the reaction of the bicarbonate with the carbonate in solution.Type: GrantFiled: June 10, 1993Date of Patent: June 21, 1994Assignee: Church & Dwight Co., Inc.Inventor: Andrew D. Kurtz
-
Patent number: 5112592Abstract: A process for reducing the amount of residual carbonate on alkali metal bicarbonates which comprises:(a) feeding a dry bicarbonate into a reaction zone,(b) admixing the bicarbonate with carbon dioxide gas saturated with water vapor at a temperature T.sub.1,(c) controlling the temperature T.sub.1 so that it exceeds temperature T.sub.2 of the carbon dioxide gas exiting the reaction zone by just enough to condense a controlled amount of water vapor sufficient to accomplish the reaction,(d) and reacting the bicarbonate, carbon dioxide, and condensed water vapor, for a sufficient time to produce dry cured bicarbonate product with less carbonate content.Type: GrantFiled: June 17, 1991Date of Patent: May 12, 1992Assignee: Church & Dwight Co., Inc.Inventor: Andrew D. Kurtz
-
Patent number: 4919910Abstract: A process for the production of potassium bicarbonate, involving the dry carbonation of potassium carbonate with a carbon dioxide gas stream having temperatures of up to 115.degree. C. and relative humidities of from 40% to 75%. High conversions of the potassium carbonate, carbon dioxide and water vapor reactants are achieved, with the formation of a substantially dry bicarbonate product which may be further processed without additional drying or handling expense.Type: GrantFiled: August 17, 1988Date of Patent: April 24, 1990Assignee: Church & Dwight Co., Inc.Inventors: Andrew D. Kurtz, Anthony E. Winston
-
Patent number: 4661207Abstract: A problem has been identified which made it difficult, if not impossible, for the prior art to operate a reboiler in the mist flow regime. The invention which overcomes this problem is to provide a chamber to establish equilibrium between the vapor portion and the liquid portion of the reboiler effluent prior to introducing equilibrated vapor into the bottom of the distillation column. The invention is particularly useful for minimizing degradation of thermally sensitive materials.Type: GrantFiled: November 27, 1985Date of Patent: April 28, 1987Assignee: FMC CorporationInventor: Andrew D. Kurtz
-
Patent number: 4282359Abstract: Cyanuric acid is mechanically separated such as by filtration, centrifugation, or centrifugal filtration from a slurry of cyanuric acid, urea, biuret, and an inert solvent in which the urea is soluble at temperatures above about 170.degree. C. to reduce the urea content of the recovered solid cyanuric acid. The biuret and solvent content of the solid cyanuric acid is also reduced.Type: GrantFiled: March 31, 1980Date of Patent: August 4, 1981Assignee: FMC CorporationInventors: Basil A. Guiliano, Henry A. Pfeffer, Andrew D. Kurtz