Patents by Inventor Grant Pease
Grant Pease 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: 7833801Abstract: A sensor device and method for detecting the presence of an analyte in a fluid solution are disclosed. The sensor device system can comprise a substrate and an array of free-standing nanowires attached to the substrate. The array can include individual free-standing nanowires wherein each of the individual free-standing nanowires have a first end and a second end. The first end can, in some embodiments, be attached to the substrate and the second end unattached to the substrate. Such individual free-standing nanowires are configured for electrical communication with other individual free-standing nanowires through the first end. A chip or computer can be electrically coupled to the array of free-standing nanowires for receiving electrical information from the array of free-standing nanowires. In some embodiments a power source can be used to send current through the nanowire array.Type: GrantFiled: November 17, 2006Date of Patent: November 16, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: James Stasiak, Paul H. McClelland, David E. Hackleman, Grant Pease, R. Stanley Williams, Kevin Peters
-
Patent number: 7741123Abstract: A microfluidic device for analysis of a sample. The microfluidic device includes a substrate portion that at least partially defines a chamber for receiving the sample. The substrate portion includes a substrate having a surface. The substrate portion also includes a plurality of thin-film layers formed on the substrate adjacent the surface. The thin-film layers form a plurality of electronic devices. Each of at least two of the electronic devices is formed by a different set of the thin-film layers.Type: GrantFiled: February 11, 2008Date of Patent: June 22, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventors: Grant Pease, Adam L Ghozeil, John Stephen Dunfield, Winthrop D. Childers, David Tyvoll, Douglas A. Sexton, Paul Crivelli
-
Publication number: 20090275098Abstract: A system and process for the utilization of xylose during fermentation is described. The system uses a fermenter and a separate reactor to isomerize the xylose to xylulose. The separation of the two processes allows the optimization of each process since the isomerization operates ideally in a calcium free environment near pH 7.5 while the fermentation operates ideally below a pH of 6. Control of pH is assisted by the modulation of CO2 in the fermentation medium. Xylulose is fermented to ethanol by numerous standard yeasts although other products are also possible. The separate reactor may be run in a single pass, or, more preferably in a recirculating mode to allow full isomerization while the xylulose product is being consumed by the yeast. A preferred embodiment includes a Simultaneous Saccharification and Fermentation system where the liquid portion of the fermenting broth is isomerized and returned to the fermentation vessel.Type: ApplicationFiled: May 1, 2009Publication date: November 5, 2009Inventors: Christopher Beatty, Stephen Potochnik, Grant Pease
-
Publication number: 20090061495Abstract: A biorefining process used to convert lignocellulosic biomass into ethanol via a fermentation pathway. In a first pretreatment process step, the biomass is mixed with an aqueous wash solution to remove soluble carbohydrates from the biomass structure. Next, the solid fraction is separated from a liquid fraction. In a second pretreatment process, the solid fraction is pre-treated to make the fiber bundles and complex polysaccharides more amenable to enzymatic hydrolysis. Following the second pretreatment process, the pre-treated biomass is subjected to one or more enzymes in a hydrolysis process. The liquid fraction isolated from the first pretreatment process is diverted past the second pretreatment process and is recombined with the solid fraction in the hydrolysis process. The enzyme cocktail in the hydrolysis process breaks down the alpha- and hemicellulose polymers into fermentable sugars.Type: ApplicationFiled: August 27, 2008Publication date: March 5, 2009Inventors: Chris Beatty, Steve Potochnik, Grant Pease
-
Publication number: 20080204048Abstract: A sensor device and method for detecting the presence of an analyte in a fluid solution are disclosed. The sensor device system can comprise a substrate and an array of free-standing nanowires attached to the substrate. The array can include individual free-standing nanowires wherein each of the individual free-standing nanowires have a first end and a second end. The first end can, in some embodiments, be attached to the substrate and the second end unattached to the substrate. Such individual free-standing nanowires are configured for electrical communication with other individual free-standing nanowires through the first end. A chip or computer can be electrically coupled to the array of free-standing nanowires for receiving electrical information from the array of free-standing nanowires. In some embodiments a power source can be used to send current through the nanowire array.Type: ApplicationFiled: November 17, 2006Publication date: August 28, 2008Inventors: James Stasiak, Paul H. McClelland, David E. Hackleman, Grant Pease, R. Stanley Williams, Kevin Peters
-
Publication number: 20080164155Abstract: A microfluidic device for analysis of a sample. The microfluidic device includes a substrate portion that at least partially defines a chamber for receiving the sample. The substrate portion includes a substrate having a surface. The substrate portion also includes a plurality of thin-film layers formed on the substrate adjacent the surface. The thin-film layers form a plurality of electronic devices. Each of at least two of the electronic devices is formed by a different set of the thin-film layers.Type: ApplicationFiled: February 11, 2008Publication date: July 10, 2008Inventors: Grant Pease, Adam L. Ghozeil, John Stephen Dunfield, Winthrop D. Childers, David Tyvoll, Douglas A. Sexton, Paul Crivelli
-
Patent number: 7338637Abstract: A microfluidic device for analysis of a sample. The microfluidic device includes a substrate portion that at least partially defines a chamber for receiving the sample. The substrate portion includes a substrate having a surface. The substrate portion also includes a plurality of thin-film layers formed on the substrate adjacent the surface. The thin-film layers form a plurality of electronic devices. Each of at least two of the electronic devices is formed by a different set of the thin-film layers. The at least two electronic devices may include 1) a temperature control device for controlling the temperature of fluid in the chamber, and 2) an other electronic device configured to sense or modify a property of fluid in the chamber.Type: GrantFiled: January 31, 2003Date of Patent: March 4, 2008Assignee: Hewlett-Packard Development Company, L.P.Inventors: Grant Pease, Adam L Ghozeil, John Stephen Dunfield, Winthrop D. Childers, David Tyvoll, Douglas A. Sexton, Paul Crivelli
-
Patent number: 7163659Abstract: A sensor device and method for detecting the presence of an analyte in a fluid solution are disclosed. The sensor device system can comprise a substrate and an array of free-standing nanowires attached to the substrate. The array can include individual free-standing nanowires wherein each of the individual free-standing nanowires have a first end and a second end. The first end can, in some embodiments, be attached to the substrate and the second end unattached to the substrate. Such individual free-standing nanowires are configured for electrical communication with other individual free-standing nanowires through the first end. A signal measurement apparatus can be electrically coupled to the array of free-standing nanowires for receiving electrical information from the array of free-standing nanowires.Type: GrantFiled: December 3, 2002Date of Patent: January 16, 2007Assignee: Hewlett-Packard Development Company, L.P.Inventors: James Stasiak, Paul H McClelland, David E Hackleman, Grant Pease, R. Stanley Williams, Kevin Peters
-
Publication number: 20040151629Abstract: A microfluidic device for analysis of a sample. The microfluidic device includes a substrate portion that at least partially defines a chamber for receiving the sample. The substrate portion includes a substrate having a surface. The substrate portion also includes a plurality of thin-film layers formed on the substrate adjacent the surface. The thin-film layers form a plurality of electronic devices. Each of at least two of the electronic devices is formed by a different set of the thin-film layers. The at least two electronic devices may include 1) a temperature control device for controlling the temperature of fluid in the chamber, and 2) an other electronic device configured to sense or modify a property of fluid in the chamber.Type: ApplicationFiled: January 31, 2003Publication date: August 5, 2004Inventors: Grant Pease, Adam L. Ghozeil, John Stephen Dunfield, Winthrop D. Childers, David Tyvoll, Douglas A. Sexton, Paul Crivelli
-
Publication number: 20040106203Abstract: A sensor device and method for detecting the presence of an analyte in a fluid solution are disclosed. The sensor device system can comprise a substrate and an array of free-standing nanowires attached to the substrate. The array can include individual free-standing nanowires wherein each of the individual free-standing nanowires have a first end and a second end. The first end can, in some embodiments, be attached to the substrate and the second end unattached to the substrate. Such individual free-standing nanowires are configured for electrical communication with other individual free-standing nanowires through the first end. A signal measurement apparatus can be electrically coupled to the array of free-standing nanowires for receiving electrical information from the array of free-standing nanowires.Type: ApplicationFiled: December 3, 2002Publication date: June 3, 2004Inventors: James Stasiak, Paul H. McClelland, David E. Hackleman, Grant Pease, R. Stanley Williams, Kevin Peters
-
Patent number: 5706810Abstract: Methods and apparatus for magnetic resonance imaging (MRI) assisted cryosurgery. Optimal probe placements and cooling parameters are calculated prior to cryosurgery using MRI data. A MRI compatible cryoprobe and a stereotactic probe positioning device are provided. The resolution of MR images is enhanced by mounting a radio frequency MR coil on the intracorporeal end of a cryoprobe. During cryosurgery the temperature distribution in the frozen region is solved by determining the boundary of the frozen region and solving the heat equation for the known boundary conditions. During cryosurgery the temperature distribution in the unfrozen region is determined by T1 measurements. The process of freezing is controlled using information from the solution of the energy equation in the frozen region and temperature measurements in the unfrozen region. After cryosurgery the extent of the tissue damage may be ascertained using phosphorus-31 and/or sodium-23 spectroscopy with a special coil set on the cryosurgical probe.Type: GrantFiled: June 2, 1995Date of Patent: January 13, 1998Assignee: The Regents of the University of CaliforniaInventors: Boris Rubinsky, John Gilbert, San Wong, Mark Roos, Grant Pease
-
Patent number: 5433717Abstract: Methods and apparatus for magnetic resonance imaging (MRI) assisted cryosurgery. Optimal probe placements and cooling parameters are calculated prior to cryosurgery using MRI data. A MRI compatible cryoprobe and a stereotactic probe positioning device are provided. The resolution of MR images is enhanced by mounting a radio frequency MR coil on the intracorporeal end of a cryoprobe. During cryosurgery the temperature distribution in the frozen region is solved by determining the boundary of the frozen region and solving the heat equation for the known boundary conditions. During cryosurgery the temperature distribution in the unfrozen region is determined by T1 measurements. The process of freezing is controled using information from the solution of the energy equation in the frozen region and temperature measurements in the unfrozen region. After cryosurgery the extent of the tissue damage may be ascertained using phosphorus-31 and/or sodium-23 spectroscopy with a special coil set on the cryosurgical probe.Type: GrantFiled: March 23, 1993Date of Patent: July 18, 1995Assignee: The Regents of the University of CaliforniaInventors: Boris Rubinsky, John Gilbert, Sam Wong, Mark Roos, Grant Pease