Patents by Inventor Lein Ngaw
Lein Ngaw 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: 8992799Abstract: A polymer composite composed of a polymerized mixture of functionalized carbon nanotubes and monomer which chemically reacts with the functionalized nanotubes. The carbon nanotubes are functionalized by reacting with oxidizing or other chemical media through chemical reactions or physical adsorption. The reacted surface carbons of the nanotubes are further functionalized with chemical moieties that react with the surface carbons and selected monomers. The functionalized nanotubes are first dispersed in an appropriate medium such as water, alcohol or a liquefied monomer and then the mixture is polymerized. The polymerization results in polymer chains of increasing weight bound to the surface carbons of the nanotubes. The composite may consists of some polymer chains imbedded in the composite without attachment to the nanotubes.Type: GrantFiled: October 26, 2005Date of Patent: March 31, 2015Assignee: Hyperion Catalysis International, Inc.Inventors: Chunming Niu, Lein Ngaw
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Patent number: 8980136Abstract: A polymer composite composed of a polymerized mixture of functionalized carbon nanotubes and monomer which chemically reacts with the functionalized nanotubes. The carbon nanotubes are functionalized by reacting with oxidizing or other chemical media through chemical reactions or physical adsorption. The reacted surface carbons of the nanotubes are further functionalized with chemical moieties that react with the surface carbons and selected monomers. The functionalized nanotubes are first dispersed in an appropriate medium such as water, alcohol or a liquefied monomer and then the mixture is polymerized. The polymerization results in polymer chains of increasing weight bound to the surface carbons of the nanotubes. The composite may consists of some polymer chains imbedded in the composite without attachment to the nanotubes.Type: GrantFiled: August 20, 2007Date of Patent: March 17, 2015Assignee: Hyperion Catalysis International, Inc.Inventors: Chunming Niu, Lein Ngaw
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Patent number: 8545730Abstract: Provided are inks and coatings including carbon nanotubes.Type: GrantFiled: December 14, 2011Date of Patent: October 1, 2013Assignee: Hyperion Catalysis International, Inc.Inventors: Jun Ma, Alan B Fischer, Chunming Niu, Lein Ngaw
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Publication number: 20120153235Abstract: Provided are inks and coatings including carbon nanotubes.Type: ApplicationFiled: December 14, 2011Publication date: June 21, 2012Applicant: HYPERION CATALYSIS INTERNATIONAL, INC.Inventors: Jun MA, Alan B. FISCHER, Chunming NIU, Lein NGAW
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Patent number: 8083970Abstract: The present invention relates to electroconductive inks and methods of making and using the same. The electroconductive inks include carbon fibrils and a liquid vehicle. The electroconductive ink may further include a polymeric binder. The electroconductive filler used is carbon fibrils which may be oxidized. The ink has rheological properties similar to that of commercially available electroconductive inks that use carbon black as their filler. The ink can be screen-printed, slot-coated, sprayed, brushed or dipped onto a wide variety of substrates to form an electroconductive coating.Type: GrantFiled: June 16, 2003Date of Patent: December 27, 2011Assignee: Hyperion Catalysis International, Inc.Inventors: Jun Ma, Alan Fischer, Chunming Niu, Lein Ngaw
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Patent number: 7998369Abstract: An electrically conductive composite comprising a polyvinylidene fluoride polymer or copolymer and carbon nanotubes is provided. Preferably, carbon nanotubes may be present in the range of about 0.5-20% by weight of the composite. The composites are prepared by dissolving the polymer in a first solvent to form a polymer solution and then adding the carbon nanotubes into the solution. The solution is mixed using an energy source such as a sonicator or a Waring blender. A precipitating component is added to precipitate out a composite comprising the polymer and the nanotubes. The composite is isolated by filtering the solution and drying the composite.Type: GrantFiled: August 20, 2007Date of Patent: August 16, 2011Assignee: Hyperion Catalysis International, Inc.Inventors: Chunming Niu, Lein Ngaw, Alan B. Fischer, Robert Hoch
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Patent number: 7880376Abstract: Field emission devices comprising carbon nanotube mats which have been treated with laser or plasma are provided. Mats are formed from carbon nanotubes, also known as carbon fibrils, which are vermicular carbon deposits having diameters of less than about one micron. The carbon nanotube mats are then subjected to laser or plasma treatment. The treated carbon nanotube mat results in improved field emission performance as either a field emission cathode or as part of a field emission device.Type: GrantFiled: August 20, 2007Date of Patent: February 1, 2011Assignee: Hyperion Catalysis International, Inc.Inventors: Mikio Takai, Alan Fischer, Lein Ngaw, Chunming Niu
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Patent number: 7852613Abstract: The present invention relates to electroconductive inks and methods of making and using the same. The electroconductive inks include carbon fibrils and a liquid vehicle. The electroconductive ink may further include a polymeric binder. The electroconductive filler used is carbon fibrils which may be oxidized. The ink has rheological properties similar to that of commercially available electroconductive inks that use carbon black as their filler. The ink can be screen-printed, slot-coated, sprayed, brushed or dipped onto a wide variety of substrates to form an electroconductive coating.Type: GrantFiled: August 20, 2007Date of Patent: December 14, 2010Assignee: Hyperion Catalysis International, Inc.Inventors: Jun Ma, Alan Fischer, Chunming Niu, Lein Ngaw
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Publication number: 20080224101Abstract: An electrically conductive composite comprising a polyvinylidene fluoride polymer or copolymer and carbon nanotubes is provided. Preferably, carbon nanotubes may be present in the range of about 0.5-20% by weight of the composite. The composites are prepared by dissolving the polymer in a first solvent to form a polymer solution and then adding the carbon nanotubes into the solution. The solution is mixed using an energy source such as a sonicator or a Waring blender. A precipitating component is added to precipitate out a composite comprising the polymer and the nanotubes. The composite is isolated by filtering the solution and drying the composite.Type: ApplicationFiled: August 20, 2007Publication date: September 18, 2008Applicant: Hyperion Catalysis International, Inc.Inventors: Chunming Niu, Lein Ngaw, Alan Fischer, Robert Hoch
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Publication number: 20080176983Abstract: A polymer composite composed of a polymerized mixture of functionalized carbon nanotubes and monomer which chemically reacts with the functionalized nanotubes. The carbon nanotubes are functionalized by reacting with oxidizing or other chemical media through chemical reactions or physical adsorption. The reacted surface carbons of the nanotubes are further functionalized with chemical moieties that react with the surface carbons and selected monomers. The functionalized nanotubes are first dispersed in an appropriate medium such as water, alcohol or a liquefied monomer and then the mixture is polymerized. The polymerization results in polymer chains of increasing weight bound to the surface carbons of the nanotubes. The composite may consists of some polymer chains imbedded in the composite without attachment to the nanotubes.Type: ApplicationFiled: August 20, 2007Publication date: July 24, 2008Applicant: Hyperion Catalysis International, Inc.Inventors: Chunming Niu, Lein Ngaw
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Patent number: 7393475Abstract: An electrically conductive composite comprising a polyvinylidene fluoride polymer or copolymer and carbon nanotubes is provided. Preferably, carbon nanotubes may be present in the range of about 0.5-20% by weight of the composite. The composites are prepared by dissolving the polymer in a first solvent to form a polymer solution and then adding the carbon nanotubes into the solution. The solution is mixed using an energy source such as a sonicator or a Waring blender. A precipitating component is added to precipitate out a composite comprising the polymer and the nanotubes. The composite is isolated by filtering the solution and drying the composite.Type: GrantFiled: January 18, 2006Date of Patent: July 1, 2008Assignee: Hyperion Catalysis International, Inc.Inventors: Chunming Niu, Lein Ngaw, Alan B. Fischer, Robert Hoch
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Publication number: 20080111110Abstract: The present invention relates to electroconductive inks and methods of making and using the same. The electroconductive inks include carbon fibrils and a liquid vehicle. The electroconductive ink may further include a polymeric binder. The electroconductive filler used is carbon fibrils which may be oxidized. The ink has rheological properties similar to that of commercially available electroconductive inks that use carbon black as their filler. The ink can be screen-printed, slot-coated, sprayed, brushed or dipped onto a wide variety of substrates to form an electroconductive coating.Type: ApplicationFiled: August 20, 2007Publication date: May 15, 2008Applicant: Hyperion Catalysis International, Inc.Inventors: Jun Ma, Alan B. Fischer, Chunming Niu, Lein Ngaw
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Publication number: 20080093968Abstract: Field emission devices comprising carbon nanotube mats which have been treated with laser or plasma are provided. Mats are formed from carbon nanotubes, also known as carbon fibrils, which are vermicular carbon deposits having diameters of less than about one micron. The carbon nanotube mats are then subjected to laser or plasma treatment. The treated carbon nanotube mat results in improved field emission performance as either a field emission cathode or as part of a field emission device.Type: ApplicationFiled: August 20, 2007Publication date: April 24, 2008Applicant: Hyperion Catalysis International, Inc.Inventors: Mikio Takai, Alan Fischer, Lein Ngaw, Chunming Niu
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Patent number: 7341498Abstract: Field emission devices comprising carbon nanotube mats which have been treated with laser or plasma are provided. Mats are formed from carbon nanotubes, also known as carbon fibrils, which are vermicular carbon deposits having diameters of less than about one micron. The carbon nanotube mats are then subjected to laser or plasma treatment. The treated carbon nanotube mat results in improved field emission performance as either a field emission cathode or as part of a field emission device.Type: GrantFiled: July 9, 2004Date of Patent: March 11, 2008Assignee: Hyperion Catalysis International, Inc.Inventors: Mikio Takai, Alan Fischer, Lein Ngaw, Chunming Niu
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Publication number: 20080031802Abstract: Methods of treating single walled and multiwalled carbon nanotubes with ozone are provided. The carbon nanotubes are treated by contacting the carbon nanotubes with ozone at a temperature range between 0° C. and 100° C. to yield functionalized nanotubes which are greater in weight than the untreated carbon nanotubes. The carbon nanotubes treated according to methods of the invention can be used to prepare complex structures such as three dimensional networks or rigid porous structures which can be utilized to form electrodes for fabrication of improved electrochemical capacitors. Useful catalyst supports are prepared by contacting carbon nanotube structures such as carbon nanotube aggregates, three dimensional networks or rigid porous structures with ozone in the temperature range between 0° C. and 100° C.Type: ApplicationFiled: October 21, 2005Publication date: February 7, 2008Applicant: Hyperion Catalysis International, Inc.Inventors: Jun Ma, Asif Chishti, Lein Ngaw, Alan Fischer, Robert Braden
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Publication number: 20060249711Abstract: A polymer composite composed of a polymerized mixture of functionalized carbon nanotubes and monomer which chemically reacts with the functionalized nanotubes. The carbon nanotubes are functionalized by reacting with oxidizing or other chemical media through chemical reactions or physical adsorption. The reacted surface carbons of the nanotubes are further functionalized with chemical moieties that react with the surface carbons and selected monomers. The functionalized nanotubes are first dispersed in an appropriate medium such as water, alcohol or a liquefied monomer and then the mixture is polymerized. The polymerization results in polymer chains of increasing weight bound to the surface carbons of the nanotubes. The composite may consists of some polymer chains imbedded in the composite without attachment to the nanotubes.Type: ApplicationFiled: October 26, 2005Publication date: November 9, 2006Applicant: Hyperion Catalysis International, Inc.Inventors: Chunming Niu, Lein Ngaw
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Publication number: 20060208229Abstract: An electrically conductive composite comprising a polyvinylidene fluoride polymer or copolymer and carbon nanotubes is provided. Preferably, carbon nanotubes may be present in the range of about 0.5-20% by weight of the composite. The composites are prepared by dissolving the polymer in a first solvent to form a polymer solution and then adding the carbon nanotubes into the solution. The solution is mixed using an energy source such as a sonicator or a Waring blender. A precipitating component is added to precipitate out a composite comprising the polymer and the nanotubes. The composite is isolated by filtering the solution and drying the composite.Type: ApplicationFiled: January 18, 2006Publication date: September 21, 2006Applicant: Hyperion Catalysis International, Inc.Inventors: Chunming Niu, Lein Ngaw, Alan Fischer, Robert Hoch
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Patent number: 7056452Abstract: An electrically conductive composite comprising a polyvinylidene fluoride polymer or copolymer and carbon nanotubes is provided. Preferably, carbon nanotubes may be present in the range of about 0.5–20% by weight of the composite. The composites are prepared by dissolving the polymer in a first solvent to form a polymer solution and then adding the carbon nanotubes into the solution. The solution is mixed using an energy source such as a sonicator or a Waring blender. A precipitating component is added to precipitate out a composite comprising the polymer and the nanotubes. The composite is isolated by filtering the solution and drying the composite.Type: GrantFiled: June 9, 2004Date of Patent: June 6, 2006Assignee: Hyperion Catalysis International, Inc.Inventors: Chunming Niu, Lein Ngaw, Alan Fischer, Robert Hoch
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Publication number: 20050224764Abstract: The present invention relates to electroconductive inks and methods of making and using the same. The electroconductive inks include carbon fibrils and a liquid vehicle. The electroconductive ink may further include a polymeric binder. The electroconductive filler used is carbon fibrils which may be oxidized. The ink has rheological properties similar to that of commercially available electroconductive inks that use carbon black as their filler. The ink can be screen-printed, slot-coated, sprayed, brushed or dipped onto a wide variety of substrates to form an electroconductive coating.Type: ApplicationFiled: June 16, 2003Publication date: October 13, 2005Applicant: Hyperion Catalysis International, Inc.Inventors: Jun Ma, Alan Fischer, Chunming Niu, Lein Ngaw
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Publication number: 20050156504Abstract: Field emission devices comprising carbon nanotube mats which have been treated with laser or plasma are provided. Mats are formed from carbon nanotubes, also known as carbon fibrils, which are vermicular carbon deposits having diameters of less than about one micron. The carbon nanotube mats are then subjected to laser or plasma treatment. The treated carbon nanotube mat results in improved field emission performance as either a field emission cathode or as part of a field emission device.Type: ApplicationFiled: July 9, 2004Publication date: July 21, 2005Applicant: Hyperion Catalysis International, Inc.Inventors: Mikio Takai, Alan Fischer, Lein Ngaw, Chunming Niu