Patents by Inventor Lynn E. Brower
Lynn E. Brower 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: 8377196Abstract: A dry cast cementitious composition including cement, water, and a rheology modifying additive (RMA) is provided. The inclusion of the RMA improves the dry cast cementitious composition's response to vibration and dampens out differences due to minor fluctuations in initial slump of the composition. The RMA may include a dispersant for the dry cast cementitious compositions. The dry cast cementitious composition may optionally include other admixtures or additives known in the industry. Methods for making the dry cast cementitious composition and dry cast cementitious articles from the composition are also provided.Type: GrantFiled: August 8, 2008Date of Patent: February 19, 2013Assignee: Construction Research & Technology GmbHInventors: Jeffrey R. Bury, Lynn E. Brower
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Patent number: 7922808Abstract: An improved freeze-thaw durability dry cast cementitious composition is provided that uses very small (0.1 ?m to 100 ?m average diameter) polymeric microspheres that are blended directly into the mixture and optionally gas-generating additives. The polymeric microspheres provide void spaces in the material matrix that act to increase freeze-thaw durability of the material. In this dry cast cementitious composition, polymeric microspheres act as pre-formed voids.Type: GrantFiled: June 14, 2005Date of Patent: April 12, 2011Assignee: Construction Research & Technology GmbHInventors: Lynn E. Brower, Thomas M. Vickers, Jr., Patrick Miller, Bruce J. Christensen
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Publication number: 20090197991Abstract: A dry cast cementitious composition including cement, water, and a rheology modifying additive (RMA) is provided. The inclusion of the RMA improves the dry cast cementitious composition's response to vibration and dampens out differences due to minor fluctuations in initial slump of the composition. The RMA may include a dispersant for the dry cast cementitious compositions. The dry cast cementitious composition may optionally include other admixtures or additives known in the industry. Methods for making the dry cast cementitious composition and dry cast cementitious articles from the composition are also provided.Type: ApplicationFiled: August 8, 2008Publication date: August 6, 2009Applicant: Construction Research & Technology GmbHInventors: Jeffrey R. Bury, Lynn E. Brower
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Patent number: 6908955Abstract: A composition that is a reaction product of two or three moieties. The first moiety (A) is a nonpolymeric, multi-functional moiety or combination of mono- or multifunctional moieties that adsorbs onto a cementitious particle. The second required moiety (C) is a linear or branched water soluble, nonionic polymer that is capable of providing dispersing capability. A third moiety (B), if present, is a nonpolymeric moiety disposed between the first and second moiety, to connect the first and second moieties.Type: GrantFiled: November 8, 2002Date of Patent: June 21, 2005Assignee: Construction Research & Technology GmbHInventors: Michael Porsch, Thomas M. Vickers, Jr., Rainer Packe-Wirth, Samy M. Shendy, Lynn E. Brower, John Pickett, Frank Danko, Runhai Lu
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Patent number: 6861459Abstract: A dry cast article and method for making the same, wherein the dry cast article includes an oligomeric dispersant that is a reaction product of two or three moieties is provided. To make a dry cast article, hydraulic cement, water, coarse aggregate, fine aggregate, optionally a surface active agent/air entraining agent, and an oligomeric dispersant are mixed and used to form a dry cast article from the mixture.Type: GrantFiled: September 16, 2002Date of Patent: March 1, 2005Assignee: Construction Research & Technology GmbHInventors: Thomas M. Vickers, Rainer Packe-Wirth, Michael Porsch, Samy M. Shendy, Lynn E. Brower, John Pickett, Runhai Lu, Frank Danko, Jeffrey R. Bury
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Publication number: 20030181579Abstract: A composition that is a reaction product of two or three moieties. The first moiety (A) is a nonpolymeric, multi-functional moiety or combination of mono- or multifunctional moieties that adsorbs onto a cementitious particle. The second required moiety (C) is a linear or branched water soluble, nonionic polymer that is capable of providing dispersing capability. A third moiety (B), if present, is a nonpolymeric moiety disposed between the first and second moiety, to connect the first and second moieties.Type: ApplicationFiled: November 8, 2002Publication date: September 25, 2003Inventors: Michael Porsch, Thomas M. Vickers, Rainer Packe-Wirth, Samy M. Shendy, Lynn E. Brower, John Pickett, Frank Danko, Runhai Lu
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Publication number: 20030144385Abstract: A dry cast article and method for making the same, wherein the dry cast article includes an oligomeric dispersant that is a reaction product of two or three moieties is provided. To make a dry cast article, hydraulic cement, water, coarse aggregate, fine aggregate, optionally a surface active agent/air entraining agent, and an oligomeric dispersant are mixed and used to form a dry cast article from the mixture.Type: ApplicationFiled: September 16, 2002Publication date: July 31, 2003Inventors: Thomas M. Vickers, Rainer Packe-Wirth, Michael Porsch, Samy M. Shendy, Lynn E. Brower, John Pickett, Runhai Lu, Frank Danko, Jeffrey R. Bury
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Patent number: 6492461Abstract: A composition that is a reaction product of two or three moieties. The first moiety (A) is a nonpolymeric, functional moiety that can adsorb onto a particle. The second required moiety (C) is a linear or branched water soluble, nonionic polymer that is capable of providing dispersing capability. A third moiety (B), if present, is a nonpolymeric moiety disposed between the first and second moiety, to connect the first and second moieties.Type: GrantFiled: July 31, 2000Date of Patent: December 10, 2002Assignee: MBT Holding AGInventors: Thomas M. Vickers, Jr., Ranier Packe-Wirth, Michael Porsch, Samy M. Shendy, Lynn E. Brower, John Pickett, Runhai Lu, Frank Danko
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Publication number: 20020151637Abstract: A polymeric structural support membrane composed of a polymer that is an initiator induced reaction product of a monomer, an initiator, and optionally a crosslinking agent; and a fire retardant is applied to the surfaces of an excavation to provide structural support. The polymer is a reaction product of a monomer that can be monofunctional, di-functional, tri-functional, tetra-functional and mixtures thereof. The membrane formed has a tensile strength and a thickness sufficient to provide support to the exposed surfaces in the excavation and can be applied by spraying, brushing, or rolling. In an alternative embodiment the membrane can be applied by pumping.Type: ApplicationFiled: February 5, 2002Publication date: October 17, 2002Inventors: Hendrik Johannes G. Pretorious, Lynn E. Brower, Frank V. Apicella
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Patent number: 6451881Abstract: A cementitious formulation comprising a cement and an oligomeric dispersant is provided. The dispersant is a reaction product of two or three moieties. The first moiety (A) is a nonpolymeric, functional moiety that adsorbs onto a particle, and wherein one or more A moieties together contain at least two residues to provide attachment of the dispersant onto a particle to be dispersed. The second required moiety (C) is a linear or branched water soluble, nonionic polymer that provides the dispersing capability. A third moiety (B), if present, is a nonpolymeric moiety disposed between the first and second moiety, to connect the first and second moieties. A method is provided for dispersing a cementitious formulation comprising a cement in water, including providing in said cementitious formulation the above oligomeric dispersant.Type: GrantFiled: July 31, 2000Date of Patent: September 17, 2002Assignee: MBT HoldingAGInventors: Thomas M. Vickers, Jr., Ranier Packe-Wirth, Michael Porsch, Samy M. Shendy, Lynn E. Brower, John Pickett, Runhai Lu, Frank Danko
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Patent number: 6310143Abstract: The present invention is directed to derivatized polycarboxylate dispersants for cementitious mixtures, including those mixtures with high percentages of pozzolan cement replacement and dry cast applications. In particular, the invention is directed to a cementitious mixture comprising cement, including cements with high percentages of pozzolan cement replacement, water, coarse aggregate, fine aggregate, and including a dispersant, wherein said dispersant is a derivatized polycarboxylate dispersant, or combination of polycarboxylate dispersants, which is a derivatized polymer comprising a backbone having moieties derived from (a) an unsaturated hydrocarbon; (b) at least one of a substituted carboxylic acid monomer, a substituted ethylenically unsaturated monomer, and maleic anhydride; and (c) optionally including an N-polyoxyalkylene succinimide; and wherein derivative moieties are pendant to the backbone monomer by at least one ester linkage and at least one amide linkage.Type: GrantFiled: December 16, 1998Date of Patent: October 30, 2001Assignee: MBT Holding AGInventors: Thomas M. Vickers, Jr., Rainer Packe-Wirth, Jeffrey R. Bury, Jesse Osborne, Runhai Lu, John Moreau, Lynn E. Brower, Samy M. Shendy, John Pickett
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Patent number: 6284867Abstract: A substantially non-crosslinked polymer cementitious composition dispersant for the improvement of the fluidity of cementitious compositions comprising hydrophilic side chain substituted polyimide or polyamide backbone units, having at least some proportion of grafted oligomeric or polymeric hydrophilic side chains linking at least one of amides, esters, and thioesters, wherein the polymer cementitious composition is water soluble, and wherein crosslinking is such that in a statistical sampling there is greater than zero to less than 0.1 mole % of backbone units involved in crosslinking.Type: GrantFiled: June 12, 2000Date of Patent: September 4, 2001Assignee: MBT Holding AGInventors: Thomas M. Vickers, Jr., Runhai Lu, Lynn E. Brower, Samy M. Shendy, Rainer Packe-Wirth, Hong Gao
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Patent number: 6136950Abstract: The invention is directed to a polymer dispersant comprising a substituted polyimide or polyamide backbone, having at least some proportion of oligomeric or polymeric grafted side chains including one of amides, esters, and thioesters, having the general formula: wherein X is at least one of hydrogen, an alkali earth metal ion, an alkaline earth metal ion, ammonium ion, and amine; R is at least one of C.sub.1 to C.sub.6 alkyl(ene) ether and mixtures thereof and C.sub.1 to C.sub.6 alkyl(ene) imine and mixtures thereof; Q is at least one of oxygen, nitrogen, and sulfur; p is a number from 1 to about 300 resulting in at least one of a linear and branched side chain; R.sub.1 is at least one of hydrogen, C.sub.1 to C.sub.Type: GrantFiled: September 23, 1997Date of Patent: October 24, 2000Assignee: MBT Holding AGInventors: Thomas M. Vickers, Jr., Runhai Lu, Lynn E. Brower, Samy M. Shendy, Rainer Packe-Wirth, Hong Gao
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Patent number: 6133347Abstract: A cementitious formulation comprising a cement and an oligomeric dispersant is provided. The dispersant is a reaction product of two or three moieties. The first moiety (A) is a nonpolymeric, functional moiety that adsorbs onto a particle, and wherein one or more A moieties together contain at least two residues to provide attachment of the dispersant onto a particle to be dispersed. The second required moiety (C) is a linear or branched water soluble, nonionic polymer that provides the dispersing capability. A third moiety (B), if present, is a nonpolymeric moiety disposed between the first and second moiety, to connect the first and second moieties. A method is provided for dispersing a cementitious formulation comprising a cement in water, including providing in said cementitious formulation the above oligomeric dispersant.Type: GrantFiled: July 9, 1999Date of Patent: October 17, 2000Assignee: MBT Holding AGInventors: Thomas M. Vickers, Jr., Rainer Packe-Wirth, Michael Porsch, Samy M. Shendy, Lynn E. Brower, John Pickett, Runhai Lu, Frank Danko