Patents by Inventor Robert C. Haddon
Robert C. Haddon 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: 9266738Abstract: A method of modifying a carbon material is disclosed. The method comprises: bonding a metal to a carbon material to form a metal-carbon complex comprising the metal and a benzene unit, wherein the carbon material comprises extended sp2-bonded carbon atoms.Type: GrantFiled: October 14, 2011Date of Patent: February 23, 2016Assignee: The Regents of the University of CaliforniaInventors: Robert C. Haddon, Santanu Sarkar, Sandip Niyogi, Elena Bekyarova, Mikhail E. Itkis, Xiaojuan Tian, Feihu Wang
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Publication number: 20140014871Abstract: This disclosure concerns a procedure for bulk scale preparation of high aspect ratio, 2-dimensional nanoplatelets comprised of a few graphene layers, Gn. n may, for example, vary between about 2 to 10. Use of these nanoplatelets in applications such as thermal interface materials, advanced composites, and thin film coatings provide material systems with superior mechanical, electrical, optical, thermal, and antifriction characteristics.Type: ApplicationFiled: July 11, 2013Publication date: January 16, 2014Applicant: The Regents of the University of CaliforniaInventors: Robert C. Haddon, Mikhail E. Itkis, Palanisamy Ramesh, Alping Yu, Elena Bekyarova, Kimberly Worsley
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Patent number: 8592612Abstract: Embodiments of the present disclosure present systems and methods for the synthesis of carbon nanotubes (CNTs) functionalized with mono-terminated, protected polyethylene glycol (PEG). As compared with bi-functional PEG, mono-terminated PEG the PEG-THFF oligomer has only one reaction site. The use of mono-terminated PEG may enhance the solubility of CNTs functionalized with mono-terminated PEG by inhibiting cross-linking between nanotubes and leads to a dramatic increase in aqueous solubility. In an example, single-walled carbon nanotubes functionalized with PEG having a tetrahydrofurfuryl (THFF) terminal group (SWNT-PEG-THFF) is found to disperse in water by ultrasonication and forms stable viscous dispersions at concentrations as high as about 9 g/L. This result exceeds the solubility of a previously reported SWNT-PEG graft copolymer, approximately 6 g/L, by more than 30%.Type: GrantFiled: April 14, 2011Date of Patent: November 26, 2013Assignee: Carbon Solutions, Inc.Inventors: Robert C. Haddon, Irina Kalinina, Elena Bekyarova
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Publication number: 20130202515Abstract: A method of modifying a carbon material is disclosed. The method comprises: bonding a metal to a carbon material to form a metal-carbon complex comprising the metal and a benzene unit, wherein the carbon material comprises extended sp2-bonded carbon atoms.Type: ApplicationFiled: October 14, 2011Publication date: August 8, 2013Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Robert C. Haddon, Santanu Sarkar, Sandip Niyogi, Elena Bekyarova, Mikhail E. Itkis, Xiaojuan Tian, Feihu Wang
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Patent number: 8454923Abstract: Systems and methods for the extraction of carbon nanotubes (CNTs) by continuous and/or batch processing are disclosed. Generally, a carbon nanotube material including carbon nanotubes (CNTs), carbon nanoparticles (CNPs), and carboxylated carbon (CC) is provided and agitated to produce a well-dispersed mixture. The well-dispersed mixture can be allowed to stand in a vessel having a lower end and an upper end. In some cases, the CNPs settle at the lower end. In some cases, at least some of the CNTs and CC are disposed at the upper end and can be removed in a dispersion, which can be pH adjusted and/or filtered to extract the CNTs from the CC.Type: GrantFiled: December 15, 2010Date of Patent: June 4, 2013Assignee: Carbon Solutions, Inc.Inventor: Robert C. Haddon
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Patent number: 8449858Abstract: Systems and methods for the purification of carbon nanotubes (CNTs) by continuous liquid extraction are disclosed. Carbon nanotubes are introduced to a flow of liquid that enables the separation of CNTs from impurities due to differences in the dispersibility of the CNTs and the impurities within the liquid. Examples of such impurities may include amorphous carbon, graphitic nanoparticles, and metal containing nanoparticles. The continuous extraction process may be performed in one or more stages, where one or more of extraction parameters may be varied between the stages of the continuous extraction process in order to effect removal of selected impurities from the CNTs. The extraction parameters may include, but are not limited to, the extraction liquid, the flow rate of the extraction liquid, the agitation of the liquid, and the pH of the liquid, and may be varied, depending on the impurity to be removed from the CNTs.Type: GrantFiled: June 10, 2010Date of Patent: May 28, 2013Assignee: Carbon Solutions, Inc.Inventor: Robert C. Haddon
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Publication number: 20110110842Abstract: Systems and methods for the extraction of carbon nanotubes (CNTs) by continuous and/or batch processing are disclosed. Generally, a carbon nanotube material including carbon nanotubes (CNTs), carbon nanoparticles (CNPs), and carboxylated carbon (CC) is provided and agitated to produce a well-dispersed mixture. The well-dispersed mixture can be allowed to stand in a vessel having a lower end and an upper end. In some cases, the CNPs settle at the lower end. In some cases, at least some of the CNTs and CC are disposed at the upper end and can be removed in a dispersion, which can be pH adjusted and/or filtered to extract the CNTs from the CC.Type: ApplicationFiled: December 15, 2010Publication date: May 12, 2011Inventor: Robert C. Haddon
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Publication number: 20110068290Abstract: Compounds, compositions, systems and methods for the chemical and electrochemical modification of the electronic structure of graphene and especially epitaxial graphene (EG) are presented. Beneficially, such systems and methods allow the large-scale fabrication of electronic EG devices. Vigorous oxidative conditions may allow substantially complete removal of the EG carbon atoms and the generation of insulating regions; such processing is equivalent to that which is currently used in the semiconductor industry to lithographically etch or oxidize silicon and thereby define the physical features and electronic structure of the devices. However graphene offers an excellent opportunity for controlled modification of the hybridization of the carbon atoms from sp2 to sp3 states by chemical addition of organic functional groups.Type: ApplicationFiled: May 29, 2009Publication date: March 24, 2011Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Robert C. Haddon, Mikhail E. Itkis, Palanisamy Ramesh, Elena Bekyarova, Sakhrat Khizroev, Jeongmin Hong
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Patent number: 7867468Abstract: Systems and methods for the preparation of reinforcements for composite materials, whereby single- and/or multi-walled carbon nanotubes (CNTs) may be electrophoretically deposited on fibrous substrates for the production of hybrid CNT/fibers. The fibers may include carbon fibers and woven carbon fabrics. The length, as well as the density and orientation of the deposited nanotubes on the fiber surfaces may also be tailored. The strength of the CNT/fiber-matrix interface formed in composites fabricated from the hybrid CNT/fibers may be adjusted by introduction of functional groups on the CNT/fiber surfaces, such as aminophenyl and carboxyphenyl groups.Type: GrantFiled: February 28, 2008Date of Patent: January 11, 2011Assignee: Carbon Solutions, Inc.Inventors: Robert C. Haddon, Mikhail E. Itkis, Elena Bekyarova, Aiping Yu
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Publication number: 20100316557Abstract: Systems and methods for the purification of carbon nanotubes (CNTs) by continuous liquid extraction are disclosed. Carbon nanotubes are introduced to a flow of liquid that enables the separation of CNTs from impurities due to differences in the dispersibility of the CNTs and the impurities within the liquid. Examples of such impurities may include amorphous carbon, graphitic nanoparticles, and metal containing nanoparticles. The continuous extraction process may be performed in one or more stages, where one or more of extraction parameters may be varied between the stages of the continuous extraction process in order to effect removal of selected impurities from the CNTs. The extraction parameters may include, but are not limited to, the extraction liquid, the flow rate of the extraction liquid, the agitation of the liquid, and the pH of the liquid, and may be varied, depending on the impurity to be removed from the CNTs.Type: ApplicationFiled: June 10, 2010Publication date: December 16, 2010Applicant: Carbon Solutions, Inc.Inventor: Robert C. Haddon
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Publication number: 20100140792Abstract: This disclosure concerns a procedure for bulk scale preparation of high aspect ratio, 2-dimensional nano platelets comprised of a few graphene layers, Gn. n may, for example, vary between about 2 to 10. Use of these nano platelets in applications such as thermal interface materials, advanced composites, and thin film coatings provide material systems with superior mechanical, electrical, optical, thermal, and antifriction characteristics.Type: ApplicationFiled: October 31, 2007Publication date: June 10, 2010Applicant: The Regents of the University of CaliforniaInventors: Robert C. Haddon, Mikhail E. Itkis, Palanisamy Ramesh, Aiping Yu, Elena Bekyarova, Kimberly Worsley
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Patent number: 7723684Abstract: Systems and methods for designing and fabricating carbon nanotube based detectors are disclosed. In some embodiments, one or more sensor elements can be formed from a film of single-walled carbon nanotubes (SWNTs). Bolometric properties of such detectors are disclosed. In some embodiments, the film can be thermally isolated in various ways, such as suspending the film and providing a vacuum environment, to provide the bolometric properties. Various properties of the SWNT films, such as resistivity-dependence on temperature and spectral response, can be obtained by adjusting the dimension and/or composition of the film. Examples of SWNT film formation, detector element fabrication, and array fabrication are disclosed.Type: GrantFiled: January 30, 2007Date of Patent: May 25, 2010Assignee: The Regents of the University of CaliforniaInventors: Robert C. Haddon, Mikhail E. Itkis
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Patent number: 7695951Abstract: Disclosed herein are microcantilevers having structural shapes that are less sensitive to turbulence and drift effects yet provide greater deflections due to analyte concentration. The structural shapes include a C-shaped microcantilever, an E-shaped microcantilever, an L-shaped microcantilever, a double microcantilever, a slit microcantilever, a tapered microcantilever, and a triangular microcantilever. The microcantilevers may be piezoresistive microcantilevers. Also disclosed are microsensors, microfluidic devices, and biochips that comprise the microcantilevers as well as methods of using the microcantilevers to detect analytes in a fluid sample.Type: GrantFiled: June 18, 2007Date of Patent: April 13, 2010Inventors: Kambiz Vafai, Cengiz Ozkan, Robert C. Haddon, Adbul Rahim A. Khaled, Mo Yang
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Patent number: 7288404Abstract: Disclosed herein are microcantilevers having structural shapes that are less sensitive to turbulence and drift effects yet provide greater deflections due to analyte concentration. The structural shapes include a C-shaped microcantilever, an E-shaped microcantilever, an L-shaped microcantilever, a double microcantilever, a slit microcantilever, a tapered microcantilever, and a triangular microcantilever. The microcantilevers may be piezoresistive microcantilevers. Also disclosed are microsensors, microfludic devices, and biochips that comprise the microcantilevers as well as methods of using the microcantilevers to detect analytes in a fluid sample.Type: GrantFiled: April 25, 2003Date of Patent: October 30, 2007Assignee: Regents of the University of CaliforniaInventors: Kambiz Vafai, Cengiz Ozkan, Robert C. Haddon, Abdul-Rahim A. Khaled, Mo Yang
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Patent number: 6670179Abstract: A cell and substrate system and nerve regeneration implant are disclosed including a carbon nanotube and a neuron growing on the carbon nanotube. Both unfunctionalized carbon nanotubes and carbon nanotubes functionalized with a neuronal growth promoting agent may be utilized in the invention. A method is also disclosed for promoting neuronal growth.Type: GrantFiled: August 1, 2001Date of Patent: December 30, 2003Assignee: University of Kentucky Research FoundationInventors: Mark P. Mattson, Robert C. Haddon, Apparao M. Rao
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Patent number: 6641793Abstract: Naked single-walled nanotube carbon metals and semiconductors are dissolved in various organic solutions.Type: GrantFiled: February 28, 2001Date of Patent: November 4, 2003Assignee: University of Kentucky Research FoundationInventors: Robert C. Haddon, Jian Chen
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Patent number: 6531513Abstract: Carbon nanotubes are dissolved in organic solutions by attaching an aliphatic carbon chain (which may contain aromatic residues) so as to render the carbon nanotubes soluble.Type: GrantFiled: February 28, 2001Date of Patent: March 11, 2003Assignee: University of Kentucky Research FoundationInventors: Robert C. Haddon, Mark A. Hamon
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Patent number: 6428912Abstract: An improved multilayer light emitting device includes novel compounds for use as the electron transporting layer. In particular, the novel compounds are novel aluminum cheltates (e.g. tris(9-oxidophenalenone) aluminum [Al(9-opo)3] and tris(6-oxidobenzanthrone) aluminum [Al(6-obao)3]. These compounds are electron acceptors having improved thermal stability while in most cases and in most applications maintaining comparable efficiencies. When negatively biased, electrons are infected into the electron transporting layer. The concurrent positive bias on the anode in relation to the cathode causes holes to be injected from the cathode into the hole transporting layer. Electroluminescence is produced and confined generally near the interface between these electron and hole transporting layers an a result of the recombination of the electron and hole pairs.Type: GrantFiled: September 30, 1998Date of Patent: August 6, 2002Assignee: Agere Systems Guardian Corp.Inventor: Robert C. Haddon
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Patent number: 6368569Abstract: Naked carbon nanotubes are dissolved in organic solutions by terminating the nanotubes with carboxylic acid groups and attaching an aliphatic carbon chain so as to render the carbon nanotubes soluble.Type: GrantFiled: September 30, 1999Date of Patent: April 9, 2002Assignee: University of Kentucky Research FoundationInventors: Robert C. Haddon, Jian Chen, Mark A. Hamon
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Patent number: 6331262Abstract: Naked single-walled nanotube carbon metals and semiconductors were dissolved in organic solutions by derivatization with SOCl2 and octadecylamine charge. Both ionic (charge transfer) and covalent solution phase chemistry with concomitant modulation of the single-walled carbon nanotubes (SWNT) band structure were demonstrated. Solution phase near-IR spectroscopy was used to study the effects of chemical modifications on the band gaps of the SWNTs. Reaction of solubilized SWNTs with dichlorocarbene led to functionalization of the nanotube walls.Type: GrantFiled: September 22, 1999Date of Patent: December 18, 2001Assignee: University of Kentucky Research FoundationInventors: Robert C. Haddon, Jian Chen