Patents by Inventor Leroy Whinnery
Leroy Whinnery 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: 7488407Abstract: A polymer material useful as the porous dielectric medium for microfluidic devices generally and electrokinetic pumps in particular. The polymer material is produced from an inverse (water-in-oil) emulsion that creates a 3-dimensional network characterized by small pores and high internal volume, characteristics that are particularly desirable for the dielectric medium for electrokinetic pumps. Further, the material can be cast-to-shape inside a microchannel. The use of bifunctional monomers provides for charge density within the polymer structure sufficient to support electroosmotic flow. The 3-dimensional polymeric material can also be covalently bound to the channel walls thereby making it suitable for high-pressure applications.Type: GrantFiled: October 19, 2004Date of Patent: February 10, 2009Assignee: Sandia CorporationInventors: Timothy J. Shepodd, Leroy Whinnery, Jr., William R. Even, Jr.
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Publication number: 20070069412Abstract: Disclosed is a closed-cell polyisocyanurate foam composition capable of high compressive strength at temperatures up to 200° C. The new composition further exhibits no loss or degradation in conventional mechanical properties—less than that which impacts the intended use. The formulation of the present invention is based on the reaction product of a isocyanate and an epoxide resin catalyzed by a mixture of a tertiary amine and a cyclic amine. Compressive strength is augmented by incorporating a large fraction of a non-reactive bulk filler into the precursor polymer gel.Type: ApplicationFiled: September 29, 2006Publication date: March 29, 2007Inventors: LeRoy Whinnery, Steven Goods, Craig Henderson, Thomas Bennett
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Publication number: 20070027226Abstract: Disclosed is a closed-cell polyisocyanurate foam composition capable of high compressive strength at temperatures up to 200° C. The new composition further exhibits no loss or degradation in conventional mechanical properties—less than that which impacts the intended use. The formulation of the present invention is based on the reaction product of a isocyanate and an epoxide resin catalyzed by a mixture of a tertiary amine and a cyclic amine. Compressive strength is augmented by incorporating a large fraction of a non-reactive bulk filler into the precursor polymer gel.Type: ApplicationFiled: September 29, 2006Publication date: February 1, 2007Inventors: LeRoy Whinnery, Steven Goods, Craig Henderson, Thomas Bennett
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Publication number: 20050051430Abstract: A polymer material useful as the porous dielectric medium for microfluidic devices generally and electrokinetic pumps in particular. The polymer material is produced from an inverse (water-in-oil) emulsion that creates a 3-dimensional network characterized by small pores and high internal volume, characteristics that are particularly desirable for the dielectric medium for electrokinetic pumps. Further, the material can be cast-to-shape inside a microchannel. The use of bifunctional monomers provides for charge density within the polymer structure sufficient to support electroosmotic flow. The 3-dimensional polymeric material can also be covalently bound to the channel walls thereby making it suitable for high-pressure applications.Type: ApplicationFiled: October 19, 2004Publication date: March 10, 2005Inventors: Timothy Shepodd, Leroy Whinnery, William Even
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Patent number: 6846399Abstract: A polymer material useful as the porous dielectric medium for microfluidic devices generally and electrokinetic pumps in particular. The polymer material is produced from an inverse (water-in-oil) emulsion that creates a 3-dimensional network characterized by small pores and high internal volume, characteristics that are particularly desirable for the dielectric medium for electrokinetic pumps. Further, the material can be cast-to-shape inside a microchannel. The use of bifunctional monomers provides for charge density within the polymer structure sufficient to support electroosmotic flow. The 3-dimensional polymeric material can also be covalently bound to the channel walls thereby making it suitable for high-pressure applications.Type: GrantFiled: February 28, 2001Date of Patent: January 25, 2005Assignee: Sandia National LaboratoriesInventors: Timothy J. Shepodd, Leroy Whinnery, Jr., William R. Even, Jr.
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Publication number: 20040127590Abstract: Disclosed is a polyurethane closed-cell foam composition exhibiting an ability to absorb very high strain rate compression without loss of structural integrity by brittle fracture, spalling, or splintering. The new composition further exhibits no loss or degradation in conventional mechanical properties, particularly its response to low rate compression. The new formulation of the present embodiemnt is based on the reaction product of a modified MDI isocyanate and a sucrose/glycerine based polyether polyol resin catalyzed by a mixture of one or more tertiary amines and water wherein the isocyanate and polyol resin each have a low number of functional groups per monomer and a high number of rotational degrees of freedom.Type: ApplicationFiled: December 20, 2002Publication date: July 1, 2004Inventors: Leroy Whinnery, Steven H. Goods, Dawn M. Skala, Craig C. Henderson
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Patent number: 6593381Abstract: A method for providing a uniformly dense polymer foam body having a density between about 0.013 g/cm3 to about 0.5 g/cm3 is disclosed. The method utilizes a thermally expandable polymer microsphere material wherein some of the microspheres are unexpanded and some are only partially expanded. It is shown that by mixing the two types of materials in appropriate ratios to achieve the desired bulk final density, filling a mold with this mixture so as to displace all or essentially all of the internal volume of the mold, heating the mold for a predetermined interval at a temperature above about 130° C., and then cooling the mold to a temperature below 80° C. the molded part achieves a bulk density which varies by less then about ±6% everywhere throughout the part volume.Type: GrantFiled: July 31, 2002Date of Patent: July 15, 2003Assignee: Sandia CorporationInventor: Leroy Whinnery, Jr.
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Publication number: 20030042642Abstract: A method for providing a uniformly dense polymer foam body having a density between about 0.013 g/cm3 to about 0.5 g/cm3 is disclosed. The method utilizes a thermally expandable polymer microballoon material wherein some of the microballoons are unexpanded and some are only partially expanded. It is shown that by mixing the two types of materials in appropriate ratios to achieve the desired bulk final density, filling a mold with this mixture so as to displace all or essentially all of the internal volume of the mold, heating the mold, for a predetermined interval at a temperature above about 130° C., and then cooling the mold to a temperature below 80° C. the molded part achieves a bulk density which varies by less then about ±6% everywhere throughout the part volume.Type: ApplicationFiled: July 31, 2002Publication date: March 6, 2003Inventor: Leroy Whinnery
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Patent number: 6471886Abstract: Thionyl chloride is a hazardous and reactive chemical used as the liquid cathode in commercial primary batteries. Contrary to previous thinking, ASZM-TEDA® carbon (Calgon Corporation) reversibly absorbs thionyl chloride. Thus, several candidate materials were examined as irreversible getters for thionyl chloride. The capacity, rate and effect of temperature were also explored. A wide variety of likely materials were investigated through screening experiments focusing on the degree of heat generated by the reaction as well as the material absorption capacity and irreversibility, in order to help narrow the group of possible getter choices. More thorough, quantitative measurements were performed on promising materials. The best performing getter was a mixture of ZnO and ASZM-TEDA® carbon. In this example, the ZnO reacts with thionyl chloride to form ZnCl2 and SO2. The SO2 is then irreversibly gettered by ASZM-TEDA® carbon.Type: GrantFiled: October 27, 2000Date of Patent: October 29, 2002Assignee: Sandia National LaboratoriesInventors: George Buffleben, Steven H. Goods, Timothy Shepodd, David R. Wheeler, LeRoy Whinnery, Jr.
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Patent number: 6461550Abstract: A method for providing a uniformly dense polymer foam body having a density between about 0.013 g/cm3 to about 0.5 g/cm3 is disclosed. The method utilizes a thermally expandable polymer microballoon material wherein some of the microballoons are unexpanded and some are only partially expanded. It is shown that by mixing the two types of materials in appropriate ratios to achieve the desired bulk final density, filling a mold with this mixture so as to displace all or essentially all of the internal volume of the mold, heating the mold for a predetermined interval at a temperature above about 130° C., and then cooling the mold to a temperature below 80° C. the molded part achieves a bulk density which varies by less then about ±6% everywhere throughout the part volume.Type: GrantFiled: July 26, 2001Date of Patent: October 8, 2002Assignee: Sandia National LaboratoriesInventor: Leroy Whinnery, Jr.
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Publication number: 20010008212Abstract: A polymer material useful as the porous dielectric medium for microfluidic devices generally and electrokinetic pumps in particular. The polymer material is produced from an inverse (water-in-oil) emulsion that creates a 3-dimensional network characterized by small pores and high internal volume, characteristics that are particularly desirable for the dielectric medium for electrokinetic pumps. Further, the material can be cast-to-shape inside a microchannel. The use of bifunctional monomers provides for charge density within the polymer structure sufficient to support electroosmotic flow. The 3-dimensional polymeric material can also be covalently bound to the channel walls thereby making it suitable for high-pressure applications.Type: ApplicationFiled: February 28, 2001Publication date: July 19, 2001Inventors: Timothy J. Shepodd, Leroy Whinnery, William R. Even