Patents by Inventor Randall M. Stoltenberg
Randall M. Stoltenberg 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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Publication number: 20230172292Abstract: Protective coverings having metal nanoparticle agglomerates adhered thereto may be applied to a surface subject to infection. The protective coverings may comprise a base substrate, and metal nanoparticle agglomerates thereof adhered to the base substrate. The base substrate may be configured for attachment to the surface subject to infection. The surface subject to infection may be a mask or facial covering in a particular example. The base substrate may be conformable to the surface subject to infection and optionally include mechanical connectors and/or a contact adhesive upon at least one side thereof to promote surface attachment. The protective coverings may be applied to a contaminated touch surface as a temporary protective layer until disinfection has taken place. Alternately, the protective coverings may be used in routine infection control procedures. The protective coverings may be formed by applying a spray formulation comprising metal nanoparticle agglomerates upon a suitable base substrate.Type: ApplicationFiled: April 22, 2021Publication date: June 8, 2023Applicant: KUPRION INC.Inventors: Alfred A. ZINN, Gilman LOUIE, Randall M. STOLTENBERG, Nicholas ANTONOPOULOS
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Publication number: 20230172211Abstract: Spray formulations comprising metal nanoparticle agglomerates dispersed in an aerosolizable fluid medium may be utilized to promote disinfection of various types of surfaces and/or to facilitate reuse of masks and other types of personal protective equipment. The spray formulations may be dispensed using an aerosol propellant, or by mechanical pumping or gas compression. Metal nanoparticles, such as copper and/or silver nanoparticles, may be present in the spray formulations and aid in inactivating pathogens such as viruses and bacteria once the spray formulations have been deposited upon a surface. An adhesive may be present in the spray formulations to promote adherence of metal nanoparticle agglomerates to the surface.Type: ApplicationFiled: April 22, 2021Publication date: June 8, 2023Applicant: KUPRION INC.Inventors: Alfred A. ZINN, Randall M. STOLTENBERG
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Publication number: 20230090532Abstract: Metal nanoparticle agglomerates may convey biocidal activity to surfaces upon which they are deposited and become adhered, such as various air filtration media. Air filtration media may comprise a plurality of fibers having a plurality of metal nanoparticle agglomerates adhered thereto. The metal nanoparticle agglomerates may comprise a plurality of fused, partially fused, or unfused metal nanoparticles that are associated with one another upon a surface of the plurality of the fibers. Suitable metal nanoparticles for promoting biocidal activity against various pathogens, such as viruses and bacteria, may include copper nanoparticles and/or silver nanoparticles. Masks, inline filters, and air filtration systems may incorporate the air filtration media.Type: ApplicationFiled: February 4, 2021Publication date: March 23, 2023Applicant: KUPRION INC.Inventors: Alfred A. ZINN, Randall M. STOLTENBERG
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Publication number: 20230051591Abstract: Metal nanoparticle agglomerates may render the surface of an article biocidal toward microorganisms. Articles having a biocidal surface may comprise a coating comprising metal nanoparticle agglomerates adhered via an adhesive to at least a portion of a surface of the article. A coating formulation comprising metal nanoparticle agglomerates may be applied to the surface of an article to accomplish the foregoing.Type: ApplicationFiled: August 11, 2022Publication date: February 16, 2023Applicant: Kuprion, Inc.Inventors: Alfred A. ZINN, Rachel BRODY, Randall M. STOLTENBERG, Robert ROTH, Khanh NGUYEN, Nhi NGO
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Publication number: 20210308807Abstract: Copper nanoparticle paste compositions may be formulated for forming connections that are capable of operating at high temperatures by including a grain growth inhibitor with copper nanoparticles in a suitable amount. Such nanoparticle paste compositions may comprise copper nanoparticles and 0.01-15 wt. % of a grain growth inhibitor or a precursor to a grain growth inhibitor admixed with the copper nanoparticles, in which the grain growth inhibitor comprises a metal. The grain growth inhibitor is insoluble in a bulk copper matrix and is capable of residing at one or more grain boundaries in the bulk copper matrix. The one or more grain boundaries may be formed after the copper nanoparticles undergo consolidation to form bulk copper. The grain growth inhibitor may comprise various metals that are insoluble in bulk copper.Type: ApplicationFiled: August 8, 2019Publication date: October 7, 2021Inventors: Alfred A. Zinn, Randall M. Stoltenberg
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Patent number: 10544483Abstract: A method includes providing nanoparticles having a tin coating surrounding a metal nucleus, such as copper. The nucleus forms first and acts as a seed growing into nanoparticles with a tin coating and a nucleus. The nanoparticles are at least partially vaporized, thereby producing vaporized tin ions. An emission of extreme ultraviolet (EUV) radiation is generated from the vaporized tin ions.Type: GrantFiled: July 1, 2016Date of Patent: January 28, 2020Assignee: Lockheed Martin CorporationInventors: Randall M. Stoltenberg, Alfred A. Zinn
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Patent number: 10201784Abstract: A method of forming a filter with uniform pore sizes includes synthesizing a moiety so as to form a plurality of like platelets having a precisely sized pore extending therethrough, distributing the plurality of like platelets about a membrane having apertures therethrough, and bonding the plurality of platelets around the apertures to form precisely sized pores through the membrane. A filtration membrane is also disclosed which provides a porous membrane having a plurality of apertures therethrough, and a plurality of platelets, wherein each platelet has a pore therethrough. The platelets are positioned over or in the apertures.Type: GrantFiled: March 8, 2017Date of Patent: February 12, 2019Assignee: Lockheed Martin CorporationInventors: Randall M. Stoltenberg, Peter V. Bedworth
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Publication number: 20170239623Abstract: A method of forming a filter with uniform pore sizes includes synthesizing a moiety so as to form a plurality of like platelets having a precisely sized pore extending therethrough, distributing the plurality of like platelets about a membrane having apertures therethrough, and bonding the plurality of platelets around the apertures to form precisely sized pores through the membrane. A filtration membrane is also disclosed which provides a porous membrane having a plurality of apertures therethrough, and a plurality of platelets, wherein each platelet has a pore therethrough. The platelets are positioned over or in the apertures.Type: ApplicationFiled: March 8, 2017Publication date: August 24, 2017Applicant: LOCKHEED MARTIN CORPORATIONInventors: Randall M. STOLTENBERG, Peter V. BEDWORTH
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Patent number: 9592475Abstract: A method of forming a filter with uniform pore sizes includes synthesizing a moiety so as to form a plurality of like platelets having a precisely sized pore extending therethrough, distributing the plurality of like platelets about a membrane having apertures therethrough, and bonding the plurality of platelets around the apertures to form precisely sized pores through the membrane. A filtration membrane is also disclosed which provides a porous membrane having a plurality of apertures therethrough, and a plurality of platelets, wherein each platelet has a pore therethrough. The platelets are positioned over or in the apertures.Type: GrantFiled: March 11, 2014Date of Patent: March 14, 2017Assignee: Lockheed Martin CorporationInventors: Randall M. Stoltenberg, Peter V. Bedworth
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Patent number: 9505192Abstract: A method for making a nanoporous membrane is disclosed. The method provides a composite film comprising an atomically thin material layer and a polymer layer, and then bombarding the composite film with energetic particles to form a plurality of pores through at least the atomically thin material layer. The nanoporous membrane also has a atomically thin material layer with a plurality of apertures therethrough and a polymer film layer adjacent one side of the graphene layer. The polymer film layer has a plurality of enlarged pores therethrough, which are aligned with the plurality of apertures. All of the enlarged pores may be concentrically aligned with all the apertures. In one embodiment the atomically thin material layer is graphene.Type: GrantFiled: March 7, 2014Date of Patent: November 29, 2016Assignee: LOCKHEED MARTIN CORPORATIONInventors: Randall M. Stoltenberg, Peter V. Bedworth, Scott E. Heise, Steven W. Sinton
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Publication number: 20160312336Abstract: Tin nanoparticles and compositions derived therefrom can be used in a number of different applications. Methods for making tin nanoparticles can include combining a tin (II) salt and a metal salt in a solvent, the metal salt being soluble in the solvent and reducible by the tin (II) salt; reducing the metal salt with a first portion of the tin (II) salt to produce a tin (IV) salt and insoluble nanoparticle seeds formed from the metal salt; and reacting the tin (IV) salt, a second portion of the tin (II) salt, or any combination thereof with a reducing agent to form tin nanoparticles having a nucleus formed from a nanoparticle seed.Type: ApplicationFiled: July 1, 2016Publication date: October 27, 2016Inventors: Randall M. STOLTENBERG, Alfred A. ZINN
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Publication number: 20160009049Abstract: A method for making a nanoporous membrane is disclosed. The method provides a composite film comprising a two-dimensional material layer and a polymer layer, and then bombarding the composite film with energetic particles to form a plurality of pores through at least the two-dimensional material layer. The nanoporous membrane also has a two-dimensional material layer with a plurality of apertures therethrough and a polymer film layer adjacent one side of the graphene layer. The polymer film layer has a plurality of enlarged pores therethrough, which are aligned with the plurality of apertures. All of the enlarged pores may be concentrically aligned with all the apertures. In one embodiment the two-dimensional material layer is graphene.Type: ApplicationFiled: September 18, 2015Publication date: January 14, 2016Inventors: Randall M. STOLTENBERG, Peter V. BEDWORTH, Scott E. HEISE, Steven W. SINTON, Jacob L. SWETT
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Publication number: 20150321147Abstract: Structures comprising a first sheet of perforated two-dimensional material and a first plurality of spacer elements disposed between a surface of the first sheet of perforated two-dimensional material and at least one of a surface of a structural substrate and a surface of a second sheet of perforated two-dimensional material are disclosed, as well as related methods. The structures may further comprise a structural substrate, a second plurality of spacer elements, additional sheets of perforated two-dimensional material in direct contact with the first and/or said second sheet of perforated two-dimensional material and/or relief features in the surface of the structural substrate.Type: ApplicationFiled: May 8, 2015Publication date: November 12, 2015Inventors: Shawn P. FLEMING, Peter V. BEDWORTH, David F. CASEY, JR., Scott E. HEISE, Matthew M. KAPELANCZYK, Steven W. SINTON, Randall M. STOLTENBERG, Jacob L. SWETT, David B. TUROWSKI, Han LIU
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Publication number: 20140263035Abstract: A method of forming a filter with uniform pore sizes includes synthesizing a moiety so as to form a plurality of like platelets having a precisely sized pore extending therethrough, distributing the plurality of like platelets about a membrane having apertures therethrough, and bonding the plurality of platelets around the apertures to form precisely sized pores through the membrane. A filtration membrane is also disclosed which provides a porous membrane having a plurality of apertures therethrough, and a plurality of platelets, wherein each platelet has a pore therethrough. The platelets are positioned over or in the apertures.Type: ApplicationFiled: March 11, 2014Publication date: September 18, 2014Inventors: Randall M. Stoltenberg, Peter V. Bedworth
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Publication number: 20140272286Abstract: A method for making a nanoporous membrane is disclosed. The method provides a composite film comprising an atomically thin material layer and a polymer layer, and then bombarding the composite film with energetic particles to form a plurality of pores through at least the atomically thin material layer. The nanoporous membrane also has a atomically thin material layer with a plurality of apertures therethrough and a polymer film layer adjacent one side of the graphene layer. The polymer film layer has a plurality of enlarged pores therethrough, which are aligned with the plurality of apertures. All of the enlarged pores may be concentrically aligned with all the apertures. In one embodiment the atomically thin material layer is graphene.Type: ApplicationFiled: March 7, 2014Publication date: September 18, 2014Applicant: LOCKHEED MARTIN CORPORATIONInventors: Randall M. Stoltenberg, Peter V. Bedworth, Scott E. Heise, Steven W. Sinton