Patents by Inventor Richard F. Browner
Richard F. Browner 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: 6126086Abstract: An oscillating capillary nebulizer with electrospray which is capable of nebulizing a liquid sample flow at microflow and normal liquid flow rates. The oscillating capillary nebulizer with electrospray comprises a pair of coaxial capillary tubes which are friction-fit mounted by way of peek tubing ferrules. A source of electric potential is connected to the inner capillary for production of an electric field in the vicinity of the distal end of the inner capillary. The dimensions of the inner and outer capillary tubes are such that an annular spacing is created between the inner surface of the outer capillary tube and the outer surface of inner capillary tube. A liquid sample is introduced into the nebulizer through the inner capillary tube. A gas flow path is provided by the space between the inner and outer capillary tubes. The gas enters the gas flow path through a port in the side of the outer capillary tube. At least the inner capillary tube is made of flexible material.Type: GrantFiled: December 5, 1997Date of Patent: October 3, 2000Assignee: Georgia Tech Research Corp.Inventors: Richard F. Browner, Zhenyu Shou
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Patent number: 5848751Abstract: An oscillating capillary nebulizer which is capable of nebulizing a liquid sample flow at microflow liquid flow rates and which is capable of controlling the particle size and particle size distribution of the nebula. The oscillating capillary nebulizer comprises a pair of coaxial capillary tubes which are friction-fit mounted by way of peek tubing ferrules. The dimensions of the inner and outer capillary tubes are such that an annular spacing is created between the inner surface of the outer capillary tube and the outer surface of inner capillary tube. A liquid sample is introduced into the nebulizer through the inner capillary tube. A gas flow path is provided by the space between the inner and outer capillary tubes. The gas enters the gas flow path through a port in the side of the outer capillary tube. At least the inner capillary tube is made of flexible material. Preferably, the inner diameter of the inner capillary tube is small enough to provide jet flow of the liquid sample at low liquid flow rates.Type: GrantFiled: October 7, 1997Date of Patent: December 15, 1998Assignee: Georgia Tech Research CorporationInventors: Lanqing Wang, Richard F. Browner
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Patent number: 5725153Abstract: An oscillating capillary nebulizer which is capable of nebulizing a liquid sample flow at micro flow liquid flow rates and which is capable of controlling the particle size and particle size distribution of the nebula. The oscillating capillary nebulizer comprises a pair of coaxial capillary tubes which are friction-fit mounted by way of peek tubing ferrules. The dimensions of the inner and outer capillary tubes are such that an annular spacing is created between the inner surface of the outer capillary tube and the outer surface of inner capillary tube. A liquid sample is introduced into the nebulizer through the inner capillary tube. A gas flow path is provided by the space between the inner and outer capillary tubes. The gas enters the gas flow path through a port in the side of the outer capillary tube. At least the inner capillary tube is made of flexible material. Preferably, the inner diameter of the inner capillary tube is small enough to provide jet flow of the liquid sample at low liquid flow rates.Type: GrantFiled: January 10, 1995Date of Patent: March 10, 1998Assignee: Georgia Tech Research CorporationInventors: Lanqing Wang, Richard F. Browner
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Patent number: 5175433Abstract: A monodisperse aerosol generator forms a stable jet of liquid at a velocity allowing columnar breakup into droplets of uniform size and spacing. To prevent degradation of the monodisperse aerosol, it is disposed by entrainment in a high velocity gaseous stream. To provide an interface for direct injection onto a particle collection device or into an infrared or Raman spectrometer or to interface a liquid chromatograph with a particle collection device or an infrared or Raman spectrometer, the generator is followed by a desolvation chamber operation at about atmospheric pressure and a multistage pressure reducer which evacuates solvent vapor and gaseous medium to form a high momentum, solvent-depleted solute aerosol beam which is input into the infrared or Raman spectrometer.Type: GrantFiled: May 4, 1990Date of Patent: December 29, 1992Assignee: Georgia Tech Research CorporationInventors: Richard F. Browner, James A. de Haseth
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Patent number: 4924097Abstract: A monodisperse aerosol generator forms a stable jet of liquid at a velocity allowing columnar breakup into droplets of uniform size and spacing. To prevent degradation of the monodisperse aerosol, it is disposed by entrainment in a high velocity gaseous stream. To provide an interface for direct injection onto a particle collection device or into an infrared or Raman spectrometer or to interface a liquid chromatograph with a particle collection device or an infrared or Raman spectrometer, the generator is followed by a desolvation chamber operation at about atmospheric pressure and a multistage pressure reducer which evacuates solvent vapor and gaseous medium to form a high momentum, solvent-depleted solute aerosol beam which is input into the infrared or Raman spectrometer.Type: GrantFiled: August 8, 1988Date of Patent: May 8, 1990Assignees: Georgia Tech RSS. Corp, Univ of Ga Rss. FoundationInventors: Richard F. Browner, James A. de Haseth
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Patent number: 4762995Abstract: A monodisperse aerosol generator forms a stable jet of liquid at a velocity allowing columnar breakup into droplets of uniform size and spacing. To prevent degradation of the monodisperse aerosol, it is dispersed by entrainment in a high velocity gaseous stream. To provide an interface for direct injection into a mass spectrometer or to interface a liquid chromatograph with a mass spectrometer, the generator is followed by a desolvation chamber operating at about atmospheric pressure and a multistage pressure reducer which evacuates solvent vapor and gaseous medium to form a high momentum, solvent-depleted solute aerosol beam which is input into the mass spectrometer. To permit the analysis of higher molecular weight molecules that may be either involatile or thermal sensitive, a fast atom bombardment (FAB) source is used for the production of FAB mass spectra.Type: GrantFiled: March 19, 1986Date of Patent: August 9, 1988Assignee: Georgia Tech Research CorporationInventors: Richard F. Browner, Ross C. Willoughby
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Patent number: 4687929Abstract: A monodisperse aerosol generator forms a stable jet of liquid at a velocity allowing columnar breakup into droplets of uniform size and spacing. To prevent degradation of the monodisperse aerosol, it is dispersed by entrainment in a high velocity gaseous stream. To provide an interface for direct injection into a mass spectrometer or to interface a liquid chromatograph with a mass spectrometer, the generator is followed by a desolvation chamber operating at about atmospheric pressure and a multistage pressure reducer which evacuates solvent vapor and gaseous medium to form a high momentum, solvent-depleted solute aerosol beam which is input into the mass spectrometer.Type: GrantFiled: September 11, 1985Date of Patent: August 18, 1987Assignee: Georgia Tech Research CorporationInventors: Richard F. Browner, Ross C. Willoughby
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Patent number: 4629478Abstract: A monodisperse aerosol generator forms a stable jet of liquid at a velocity allowing columnar breakup into droplets of uniform size and spacing. To prevent degradation of the monodisperse aerosol, it is dispersed by entrainment in a high velocity gaseous stream. To provide an interface for direct injection into a mass spectrometer or to interface a liquid chromatograph with a mass spectrometer, the generator is followed by a desolvation chamber operating at about atmospheric pressure and a multistage pressure reducer which evacuates solvent vapor and gaseous medium to form a high momentum, solvent-depleted solute aerosol beam which is input into the mass spectrometer.Type: GrantFiled: June 22, 1984Date of Patent: December 16, 1986Assignee: Georgia Tech Research CorporationInventors: Richard F. Browner, Ross C. Willoughby