Patents by Inventor David F. Bocian

David F. Bocian 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: 8529996
    Abstract: This invention provides a new procedure for attaching molecules to semiconductor surfaces, in particular silicon. The molecules, which include, but are not limited to porphyrins and ferrocenes, have been previously shown to be attractive candidates for molecular-based information storage. The new attachment procedure is simple, can be completed in short times, requires minimal amounts of material, is compatible with diverse molecular functional groups, and in some instances affords unprecedented attachment motifs. These features greatly enhance the integration of the molecular materials into the processing steps that are needed to create hybrid molecular/semiconductor information storage devices.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: September 10, 2013
    Assignees: The Regents of the University of California, North Carolina State University
    Inventors: David F. Bocian, Jonathan S. Lindsey, Zhiming Liu, Amir A. Yasseri, Veena Misra, Qian Zhao, Qiliang Li, Shyam Surthi, Robert S. Loewe
  • Patent number: 8231941
    Abstract: This invention provides novel methods for the formation of redox-active polymers attached to surfaces. In certain embodiments, the methods involve providing redox-active molecules bearing at least a first reactive site or group and a second reactive site or group; and contacting the surface with the redox-active molecules where the contacting is under conditions that result in attachment of said redox-active molecules to said surface via the first reactive site or group and attachment of redox-active molecules via the second reactive site or group, to the redox-active molecules attached to the surface thereby forming a polymer attached to said surface where the polymers comprise at least two of said redox-active molecules.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: July 31, 2012
    Assignees: The Regents of the University of California, The North Carolina State University
    Inventors: David F. Bocian, Zhiming Liu, Jonathan S. Lindsey
  • Patent number: 8173630
    Abstract: This invention provides redox-active molecules attached to polypodal (e.g., bipodal, tripodal, quadrapodal, pentapodal, etc.) tethers that can be used for attachment of the redox-active molecules to a substrate (e.g., an electrode). The tethered redox-active molecules are useful for the fabrication of memory devices.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: May 8, 2012
    Assignees: The Regents of the University of California, The North Carolina State University, Zettacore, Inc.
    Inventors: Jonathan S. Lindsey, David F. Bocian, Robert Loewe, Ignacio Sanchez, Werner G. Kuhr, Kisari Padmaja, Lingyun Wei
  • Patent number: 8062756
    Abstract: This invention provides a procedure for growing oligomers via a stepwise process. The oligomers can include porphyrins, which have been previously shown to be attractive candidates for molecular-based information storage. The stepwise synthesis procedure requires no protecting groups, thus eliminating protection/deprotection reactions that add complexity to the process.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: November 22, 2011
    Assignees: The Regents oft the University of California, North Carolina State University
    Inventors: David F. Bocian, Jonathan S. Lindsey, Jieying Jiao
  • Publication number: 20100330284
    Abstract: This invention provides novel methods for the formation of redox-active polymers attached to surfaces. In certain embodiments, the methods involve providing redox-active molecules bearing at least a first reactive site or group and a second reactive site or group; and contacting the surface with the redox-active molecules where the contacting is under conditions that result in attachment of said redox-active molecules to said surface via the first reactive site or group and attachment of redox-active molecules via the second reactive site or group, to the redox-active molecules attached to the surface thereby forming a polymer attached to said surface where the polymers comprise at least two of said redox-active molecules.
    Type: Application
    Filed: November 6, 2008
    Publication date: December 30, 2010
    Applicants: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE NORTH CAROLINA STATE UNIVERSITY
    Inventors: David F. Bocian, Zhiming Liu, Jonathan S. Lindsey
  • Patent number: 7826250
    Abstract: This invention provides approaches to improve the signal to noise ratio (S/N) in electrochemical measurements (e.g., amperometry, voltammetry, etc.). In particular, a method is described wherein the faradaic current is temporally dissociated from the charging current associated with reading the charge of a redox-active species (e.g., a self-assembled monolayer (SAM)). This method, designated herein as open circuit potential amperometry (OCPA), quantitatively reads the charge of the redox species bound to (electrically coupled to) an electrode surface, while discriminating against both charging current(s) and amperometric signal(s) that arise, e.g., from diffusion-based species in solution.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: November 2, 2010
    Assignee: North Carolina State Univeristy
    Inventors: Werner G. Kuhr, David F. Bocian, Jonathan S. Lindsey, Kristian A. Roth
  • Publication number: 20090121210
    Abstract: This invention provides a new method of forming a self-assembling monolayer (SAM) of alcohol-terminated or thiol-terminated organic molecules (e.g. ferrocenes, porphyrins, etc.) on a silicon or other group IV element surface. The assembly is based on the formation of an E-O— or an E-S— bond where E is the group IV element (e.g. Si, Ge, etc.). The procedure has been successfully used on both P- and n-type group IV element surfaces. The assemblies are stable under ambient conditions and can be exposed to repeated electrochemical cycling.
    Type: Application
    Filed: March 18, 2008
    Publication date: May 14, 2009
    Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: David F. Bocian, Werner G. Kuhr, Jonathan S. Lindsey, Rajeeve B. Dabke, Zhiming Liu
  • Patent number: 7518905
    Abstract: This invention provides novel high density memory devices that are electrically addressable permitting effective reading and writing, that provide a high memory density (e.g., 1015 bits/cm3), that provide a high degree of fault tolerance, and that are amenable to efficient chemical synthesis and chip fabrication. The devices are intrinsically latchable, defect tolerant, and support destructive or non-destructive read cycles. In a preferred embodiment, the device comprises a fixed electrode electrically coupled to a storage medium having a multiplicity of different and distinguishable oxidation states wherein data is stored in said oxidation states by the addition or withdrawal of one or more electrons from said storage medium via the electrically coupled electrode.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: April 14, 2009
    Assignees: The Regents of the University of California, North Carolina State University
    Inventors: David F Bocian, Werner G Kuhr, Jonathan Lindsey, Peter Christian Clausen, Daniel Tomasz Gryko
  • Patent number: 7452572
    Abstract: This invention provides novel methods for the formation of redox-active polymers attached to surfaces. In certain embodiments, the methods involve providing redox-active molecules bearing at least a first reactive site or group and a second reactive site or group; and contacting the surface with the redox-active molecules where the contacting is under conditions that result in attachment of said redox-active molecules to said surface via the first reactive site or group and attachment of redox-active molecules via the second reactive site or group, to the redox-active molecules attached to the surface thereby forming a polymer attached to said surface where the polymers comprise at least two of said redox-active molecules.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: November 18, 2008
    Assignees: The North Carolina State University, The Regents of the University of California
    Inventors: David F. Bocian, Zhiming Liu, Jonathan S. Lindsey
  • Publication number: 20080280047
    Abstract: This invention provides novel methods for the formation of redox-active polymers attached to surfaces. In certain embodiments, the methods involve providing redox-active molecules bearing at least a first reactive site or group and a second reactive site or group; and contacting the surface with the redox-active molecules where the contacting is under conditions that result in attachment of said redox-active molecules to said surface via the first reactive site or group and attachment of redox-active molecules via the second reactive site or group, to the redox-active molecules attached to the surface thereby forming a polymer attached to said surface where the polymers comprise at least two of said redox-active molecules.
    Type: Application
    Filed: March 11, 2004
    Publication date: November 13, 2008
    Inventors: David F. Bocian, Zhiming Liu Liu, Jonathan S. Lindsey
  • Patent number: 7348206
    Abstract: This invention provides a new method of forming a self-assembling monolayer (SAM) of alcohol-terminated or thiol-terminated organic molecules (e.g. ferrocenes, porphyrins, etc.) on a silicon or other group IV element surface. The assembly is based on the formation of an E-O— or an E-S— bond where E is the group IV element (e.g. Si, Ge, etc.). The procedure has been successfully used on both P- and n-type group IV element surfaces. The assemblies are stable under ambient conditions and can be exposed to repeated electrochemical cycling.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: March 25, 2008
    Assignees: The Regents of the University of California, The North Carolina State University
    Inventors: David F. Bocian, Werner G. Kuhr, Jonathan S. Lindsey, Rajeeve Balkrishna Dabke, Zhiming Liu
  • Patent number: 7312100
    Abstract: This invention pertains to methods assembly of organic molecules and electrolytes in hybrid electronic. In one embodiment, a method is provided that involves contacting a surface/electrode with a compound of formula: R-L2-M-L1-Z1 where Z1 is a surface attachment group; L1 and L2 are independently linker or covalent bonds; M is an information storage molecule; and R is a protected or unprotected reactive site or group; where the contacting results in attachment of the redox-active moiety to the surface via the surface attachment group; and ii) contacting the surface-attached information storage molecule with an electrolyte having the formula: J-Q where J is a charged moiety (e.g., an electrolyte); and Q is a reactive group that is reactive with the reactive group (R) and attaches J to the information storage molecule thereby patterning the electrolyte on the surface.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: December 25, 2007
    Assignee: The North Carolina State University
    Inventors: David F. Bocian, Werner G. Kuhr, Jonathan S. Lindsey, Veena Misra
  • Patent number: 7230268
    Abstract: This invention provides a new procedure for attaching molecules to semiconductor surfaces, in particular silicon. The molecules, which include, but are not limited to porphyrins and ferrocenes, have been previously shown to be attractive candidates for molecular-based information storage. The new attachment procedure is simple, can be completed in short times, requires minimal amounts of material, is compatible with diverse molecular functional groups, and in some instances affords unprecedented attachment motifs. These features greatly enhance the integration of the molecular materials into the processing steps that are needed to create hybrid molecular/semiconductor information storage devices.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: June 12, 2007
    Assignees: The Regents of the University of California, The North Carolina State University
    Inventors: David F Bocian, Jonathan S Lindsey, Zhiming Liu, Amir A Yasseri, Robert S Loewe
  • Patent number: 7223628
    Abstract: This invention provides a new procedure for attaching molecules to semiconductor surfaces, in particular silicon. The molecules, which include, but are not limited to porphyrins and ferrocenes, have been previously shown to be attractive candidates for molecular-based information storage. The new attachment procedure is simple, can be completed in short times, requires minimal amounts of material, is compatible with diverse molecular functional groups, and in some instances affords unprecedented attachment motifs. These features greatly enhance the integration of the molecular materials into the processing steps that are needed to create hybrid molecular/semiconductor information storage devices.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: May 29, 2007
    Assignee: The Regents of the University of California
    Inventors: David F. Bocian, Jonathan Lindsey, Zhiming Liu, Amir A. Yasseri, Veen Misra, Qian Zhao, Qiliang Li, Shyam Surthi, Robert S. Loewe
  • Patent number: 7074519
    Abstract: This invention provides a new design and fabrication for a three-dimensional crossbar architecture embedding a sub-micron or nanometer sized hole (called a molehole) in each cross-region. Each molehole is an electrochemical cell consisting of two or more sectional surfaces separated by a non-conductor (e.g. a dialectric layer and solid electrolyte). When used in electrochemical molecular memory device (EMMD), the architecture provides unique features such as a nano-scale electroactive surface, no interaction between memory elements, and easier miniaturization and integration.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: July 11, 2006
    Assignee: The Regents of the University of California
    Inventors: Werner G. Kuhr, David F. Bocian, Zhiming Liu, Amir Yasseri
  • Patent number: 7061791
    Abstract: This invention provides novel high density memory devices that are electrically addressable permitting effective reading and writing, that provide a high memory density (e.g., 1015 bits/cm3), that provide a high degree of fault tolerance, and that are amenable to efficient chemical synthesis and chip fabrication. The devices are intrinsically latchable, defect tolerant, and support destructive or non-destructive read cycles. In a preferred embodiment, the device comprises a fixed electrode electrically coupled to a storage medium having a multiplicity of different and distinguishable oxidation states wherein data is stored in said oxidation states by the addition or withdrawal of one or more electrons from said storage medium via the electrically coupled electrode.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: June 13, 2006
    Assignee: The Regents of the University of California
    Inventors: David F. Bocian, Werner G. Kuhr, Jonathan Lindsey
  • Patent number: 7042755
    Abstract: This invention provides novel high density memory devices (FIG. 3) that are electrically addressable permitting effective reading and writing, that provide a high memory density (102), that provide a high degree of fault tolerance, and that are amenable to efficient chemical synthesis and chip fabrication. The devices arc intrinsically latchable, defect tolerant, and support destructive or non-destructive read cycles. In a preferred embodiment, the device comprises a fixed electrode electrically coupled to a storage medium having a multiplicity of different and distinguishable oxidation states wherein data is stored in said oxidation states by the addition or withdrawal of one or more electrons from said storage medium via the electrically coupled electrode.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: May 9, 2006
    Inventors: David F. Bocian, Werner G. Kuhr, Jonathan Lindsey, Peter Christian Clausen, Daniel Tomasz Gryko
  • Patent number: 6943054
    Abstract: This invention provides a new procedure for attaching molecules to semiconductor surfaces, in particular silicon. The molecules, which include, but are not limited to porphyrins and ferrocenes, have been previously shown to be attractive candidates for molecular-based information storage. The new attachment procedure is simple, can be completed in short times, requires minimal amounts of material, is compatible with diverse molecular functional groups, and in some instances affords unprecedented attachment motifs. These features greatly enhance the integration of the molecular materials into the processing steps that are needed to create hybrid molecular/semiconductor information storage devices.
    Type: Grant
    Filed: July 28, 2003
    Date of Patent: September 13, 2005
    Assignee: The Regents of the University of California
    Inventors: David F. Bocian, Jonathan S. Lindsey, Zhiming Liu, Amir A. Yasseri, Robert S. Loewe
  • Patent number: 6728129
    Abstract: This invention provides novel high density memory devices that are electrically addressable permitting effective reading and writing, that provide a high memory density (e.g., 1015 bits/cm3), that provide a high degree of fault tolerance, and that are amenable to efficient chemical synthesis and chip fabrication. The devices are intrinsically latchable, defect tolerant, and support destructive or non-destructive read cycles. In a preferred embodiment, the device comprises a fixed electrode electrically coupled to a storage medium having a multiplicity of different and distinguishable oxidation states wherein data is stored in said oxidation states by the addition or withdrawal of one or more electrons from said storage medium via the electrically coupled electrode. The storage medium typically comprises a storage molecule that is a triple-decker sandwich heterodimer. Such dimers can provide 8 or more oxidation states and permit the storage of at least 3 bits per molecule.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: April 27, 2004
    Assignee: The Regents of the University of California
    Inventors: Jonathan S. Lindsey, David F. Bocian, Karl-Heinz Schweikart, Werner G. Kuhr
  • Patent number: 6674121
    Abstract: A method and/or system and/or apparatus for a molecular-based FET device (an m-FET) uses charge storing molecules between a gate and channel of an FET-type transistor. Further embodiments describe fabrication methods for using combinations of standard practices in lithography and synthetic chemistry and novel elements.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: January 6, 2004
    Assignee: The Regents of the University of California
    Inventors: Veena Misra, David F. Bocian, Werner G. Kuhr, Jonathan S. Lindsey