公开(公告)号：EP1131154A1

公开(公告)日：2001-09-12

申请号：EP99956959.3

申请日：1999-11-08

Applicant: Nanogram Corporation

Inventor： GARDNER, James, T. ,  KUMAR, Sujeet ,  CORNELL, Ronald, M. ,  MOSSO, Ronald, J. ,  BI, Xiangxin

IPC: B01J19/08

CPC classification number: B01J4/00 ,  B01J10/002 ,  B01J19/088 ,  B01J19/10 ,  B01J19/12 ,  B01J19/121 ,  B01J19/26 ,  B01J2219/0869 ,  B01J2219/0884 ,  Y10T428/2982

Abstract: An aerosol delivery apparatus (96) is used to deliver an aerosol into a reaction chamber (92) for chemical reaction to produce reaction products such as nanoparticles. A variety of improved aerosol delivery approaches provide for the production of more uniform reaction products. In preferred embodiments, a reaction chamber (92) is used that has a cross section perpendicular to the flow of reactant having a dimension along a major axis greater than a dimension along a minor axis. The aerosol preferably is elongated along the major axis of the reaction chamber.

公开(公告)号：EP1040216A1

公开(公告)日：2000-10-04

申请号：EP98961927.5

申请日：1998-12-04

Applicant: Nanogram Corporation

Inventor： KAMBE, Nobuyuki ,  BI, Xiangxin

IPC: D01F9/127 ,  B01J23/745

CPC classification number: B82Y30/00 ,  B01J23/745 ,  D01F9/127

Abstract: A method for the production of elemental carbon fibers and carbon particles uses highly uniform catalyst particles, preferably made by laser pyrolysis. Preferred catalyst particles include elemental iron, iron carbides or iron sulfides, generally with an average particle diameter from about 1000 nm to about 5 nm. Also, preferred catalyst particles have a narrow distribution in particle diameters as well as a cut off in particle size such that the diameter distribution does not have a tail toward large diameters.

公开(公告)号：EP1027394A1

公开(公告)日：2000-08-16

申请号：EP98954042.2

申请日：1998-10-29

Applicant: Nanogram Corporation

Inventor： KAMBE, Nobuyuki ,  BI, Xiangxin

IPC: C09K3/14 ,  B01J19/12 ,  C09G1/02

CPC classification number: B82Y30/00 ,  B01J12/005 ,  B01J12/02 ,  B01J19/121 ,  C01B33/183 ,  C01P2002/50 ,  C01P2004/32 ,  C01P2004/51 ,  C01P2004/62 ,  C01P2004/64 ,  C09G1/02 ,  C09K3/1409 ,  C09K3/1463

Abstract: Polishing compositions are described that are appropriate for fine polishing to very low tolerances. The polishing compositions include particles with small diameters with very narrow distributions in size and effectively no particles with diameters several times larger than the average diameter. Furthermore, the particles generally have very high uniformity with respect to having a single crystalline phase. Preferred particles have an average diameter less than about 200 nm. Laser pyrolysis processes are described for the production of the appropriate particles including metal oxides, metal carbides, metal sulfides, SiO2 and SiC.

公开(公告)号：EP1249047B1

公开(公告)日：2010-08-25

申请号：EP00979141.9

申请日：2000-11-06

Applicant: NanoGram Corporation

Inventor： BUCKLEY, James, P. ,  GHANTOUS, Dania, I. ,  HOANG, Khanh ,  HORNE, Craig, R. ,  BI, Xiangxin

IPC: H01M4/36

CPC classification number: H01M4/13 ,  H01M4/02 ,  H01M4/131 ,  H01M4/505 ,  H01M2004/021

Abstract: Embodiments of electrodes include a collection of particles having an average diameter less than about 100 nm and have a root mean square surface roughness less than about one micron. Electrodes can be formed with a collection of electroactive nanoparticles having a narrow particle size distribution. Electrodes can be formed having an average thickness less than about 10 microns that include particles having an average diameter less than about 100 nm. Thin electrodes can be used in the formation of thin batteries in which at least one of the electrodes includes nanoscale electroactive particles.

公开(公告)号：EP1166286A1

公开(公告)日：2002-01-02

申请号：EP00917798.1

申请日：2000-03-08

Applicant: Nanogram Corporation

Inventor： REITZ, Hariklia, Dris ,  KUMAR, Sujeet ,  BI, Xiangxin ,  KAMBE, Nobuyuki

IPC: H01C7/10

CPC classification number: C01G9/03 ,  B82Y30/00 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/62 ,  C01P2004/64 ,  C09C1/043 ,  C09K11/54 ,  H01C7/112

Abstract: A collection of zinc oxide nanoparticles have been produced by laser pyrolysis (300). The zinc oxide nanoparticles have average particle diameters of less than about 95 nm and a very narrow particle size distribution. The laser pyrolysis process is characterized by the production of a reactant stream within the reaction chamber, where the reactant stream includes a zinc precursor and other reactants. The zinc precursor can be delivered as an aerosol.

公开(公告)号：EP1129035A1

公开(公告)日：2001-09-05

申请号：EP99942084.7

申请日：1999-08-11

Applicant: Nanogram Corporation

Inventor： KUMAR, Sujeet ,  REITZ, Hariklia, Dris ,  BI, Xiangxin ,  KAMBE, Nobuyuki

IPC: C01G1/02 ,  B24D3/00 ,  C01B13/00 ,  C01F7/02

CPC classification number: C01F7/02 ,  B82Y30/00 ,  C01F7/30 ,  C01F7/306 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/32 ,  C01P2004/50 ,  C01P2004/52 ,  C01P2004/62 ,  C01P2004/64 ,  C09G1/02

Abstract: A collection of nanoparticles of aluminum oxide having a very narrow distribution of particle diameters are produced by laser pyrolysis. The distribution of particle diameters effectively does not have a tail and almost no particles have a diameter greater than about 4 times the average diameter. The pyrolysis is performed by pyrolyzing a molecular stream containing an aluminum precursor, an oxidizing agent and an infrared absorber.

公开(公告)号：EP1027819A1

公开(公告)日：2000-08-16

申请号：EP98956352.3

申请日：1998-10-29

Applicant: Nanogram Corporation

Inventor： KAMBE, Nobuyuki ,  BI, Xiangxin

IPC: H05K9/00

CPC classification number: H05K9/0083 ,  H01F1/36 ,  H01F1/37 ,  H05K9/0088 ,  Y10S428/924 ,  Y10S977/838

Abstract: Electromagnetic shielding material is formed from a shielding composition made with magnetic particles and a binder, where the magnetic particles have an average diameter less than about 1000 nm and are substantially crystalline. The magnetic particles can be formed from Fe2O3, Fe3O4, Fe3C, or Fe7C3. The shielding composition can be formed into a layer (500) or into composite particles (600). The binder (504) can be a metal or an electrically conducting polymer. A conducting layer (558) can be placed adjacent to the shielding composition. The shielding material can be used to protect sensitive electronic devices. Methods are described for forming iron oxide particles by laser pyrolysis.

公开(公告)号：EP1016149A1

公开(公告)日：2000-07-05

申请号：EP98935816.3

申请日：1998-07-20

Applicant: Nanogram Corporation

Inventor： BI, Xiangxin ,  KUMAR, Sujeet ,  GARDNER, James, T. ,  KAMBE, Nobuyuki

IPC: H01M4/48

CPC classification number: C01G31/02 ,  B82Y30/00 ,  C01P2002/02 ,  C01P2002/72 ,  C01P2004/04 ,  C01P2004/51 ,  C01P2004/64 ,  C01P2006/40 ,  H01M4/02 ,  H01M4/485 ,  H01M4/5825 ,  H01M4/622 ,  H01M4/623 ,  H01M10/0525 ,  H01M2004/021

Abstract: Vanadium oxide nanoparticles with different vanadium oxidation states and different crystal structures. The particles have a narrow distribution of particle diameters and unique properties that result from their small size and correspondingly large surface area. The particles are produced by laser pyrolysis, and can be further treated to change their properties, without destroying their nanoscale size. The stoichiometry and crystal structure can be varied by initial heating under mild conditions. The materials may be used as cathode active materials in high energy density batteries.

公开(公告)号：EP0907410A1

公开(公告)日：1999-04-14

申请号：EP98903934.0

申请日：1998-02-06

Applicant: Nanogram Corporation

Inventor： BI, Xiangxin ,  KAMBE, Nobuyuki

IPC: B01J12 ,  B01J19 ,  C01B31 ,  C09C1

CPC classification number: B82Y30/00 ,  B01J12/005 ,  B01J12/02 ,  B01J19/08 ,  B01J19/121 ,  C01B32/914 ,  C01P2004/64 ,  C09C1/48 ,  Y10S266/905 ,  Y10S977/773 ,  Y10S977/835 ,  Y10S977/838 ,  Y10S977/84

Abstract: An apparatus produces particles, preferably nanoparticles, from gas phase chemical reactions induced by a radiation beam. The radiation beam comprises preferably electromagnetic radiation or a laser beam. The apparatus includes a reaction chamber (102) with a window (242) for introducing the radiation and an elongated reactant inlet (164), and said reaction chamber is configured to conform generally to the elongated shape of the reactant inlet. Shielding gas may be introduced (196) to form a blanket of inert gas on both sides of the reactant stream to prevent reactive gases and product particles striking the chamber walls and the optical components. The apparatus may further comprise a pyrometer (302) to monitor the emission of reactants, a particle size analyser (400) and a computer (108). A feedback loop with a pressure sensor (30 4) may be used to maintain the desired pressure within the reaction chamber.

公开(公告)号：EP1027721B1

公开(公告)日：2008-06-25

申请号：EP98956351.5

申请日：1998-10-29

Applicant: Nanogram Corporation

Inventor： KAMBE, Nobuyuki ,  BI, Xiangxin

IPC: H01J61/35 ,  H01J61/40

CPC classification number: A61K8/19 ,  A61K8/27 ,  A61K8/29 ,  A61K2800/413 ,  A61Q17/04 ,  B82Y5/00 ,  F21V3/10 ,  H01J61/35 ,  H01J61/40 ,  H05K3/0076 ,  Y10S428/913 ,  Y10T428/2982 ,  Y10T428/2993 ,  Y10T428/8305

Abstract: Nanoscale UV absorbing particles are described that have high UV absorption cross sections while being effectively transparent to visible light. These particles can be used to shield individuals from harmful ultraviolet radiation. These particles can also be used in industrial processing especially to produce solid state electronic devices by creating edges of photoresist material with a high aspect ratio. The UV absorbing particles can also be used as photocatalysts that become strong oxidizing agents upon exposure to LV light. Laser pyrolysis provides an efficient method for the production of suitable particles.