Patents by Inventor Charles A. Ewing
Charles A. Ewing 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: 9234833Abstract: A system and related method for improved liquid delivery evaluation using a solution containing one or more dyes such that the solution exhibits multiple distinct detectable light absorbance spectral features for calibrating or testing over extended volume or dilution ranges are described. The system includes: a photometric instrument capable of measuring optical absorbance at multiple wavelengths; one or more sample solutions to be dispensed using the liquid delivery system whose performance is being tested or calibrated; and vessels optionally pre-filled, or filled by the user, with diluent solution. The sample solutions contain one or more dyes, chosen so that multiple distinct detectable light absorbance spectral features, such as peaks and/or valleys and/or plateaus of the solution can be distinguished for volume or dilution ranges of interest.Type: GrantFiled: March 18, 2013Date of Patent: January 12, 2016Assignee: Artel, Inc.Inventors: Richard H. Curtis, Ceara McNally, Charles A. Ewing, John Thomas Bradshaw
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Patent number: 8850903Abstract: A liquid aspirating and dispensing apparatus and method of using the apparatus. Among other elements, the apparatus includes a liquid handling device having one or more channel members, each of which has a removable liquid holding tip attached, and a signal transmitting device. A signal transmitted from the signal transmitting device may be used in a variety of ways to yield information regarding the performance of the apparatus. This information may be provided via direct detection of the signal by an operator of the apparatus. Alternatively, the signal may be detected by a programmable signal detecting device, interpreted by the apparatus, and then displayed in a form that is understandable to the operator. Furthermore, the liquid holding tip may be modified to enable different forms of signal transmission.Type: GrantFiled: January 13, 2011Date of Patent: October 7, 2014Assignees: Artel, Inc., Seyonic S.A.Inventors: Richard H. Curtis, Kirby Pilcher, David L. Bohnsack, Charles Ewing, George Rodrigues, John T. Bradshaw, Marc Boillat
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Patent number: 8404158Abstract: A system and related method for improved liquid delivery evaluation using a solution containing one or more dyes such that the solution exhibits multiple distinct detectable light absorbance spectral features for calibrating or testing over extended volume or dilution ranges are described. The system includes: a photometric instrument capable of measuring optical absorbance at multiple wavelengths; one or more sample solutions to be dispensed using the liquid delivery system whose performance is being tested or calibrated; and vessels optionally pre-filled, or filled by the user, with diluent solution. The sample solutions contain one or more dyes, chosen so that multiple distinct detectable light absorbance spectral features, such as peaks and/or valleys and/or plateaus of the solution can be distinguished for volume or dilution ranges of interest.Type: GrantFiled: April 7, 2008Date of Patent: March 26, 2013Assignee: Artel, Inc.Inventors: Richard H. Curtis, Ceara McNally, Charles A. Ewing, John Thomas Bradshaw
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Publication number: 20110126645Abstract: A liquid aspirating and dispensing apparatus and method of using the apparatus. Among other elements, the apparatus includes a liquid handling device having one or more channel members, each of which has a removable liquid holding tip attached, and a signal transmitting device. A signal transmitted from the signal transmitting device may be used in a variety of ways to yield information regarding the performance of the apparatus. This information may be provided via direct detection of the signal by an operator of the apparatus. Alternatively, the signal may be detected by a programmable signal detecting device, interpreted by the apparatus, and then displayed in a form that is understandable to the operator. Furthermore, the liquid holding tip may be modified to enable different forms of signal transmission.Type: ApplicationFiled: January 13, 2011Publication date: June 2, 2011Applicants: ARTEL, INC., SEYONIC SAInventors: Richard H. Curtis, Kirby Pilcher, David L. Bohnsack, Charles Ewing, George Rodrigues, John T. Bradshaw, Marc Boillat
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Patent number: 7870797Abstract: A liquid aspirating and dispensing apparatus and method of using the apparatus. Among other elements, the apparatus includes a liquid handling device having one or more channel members, each of which has a removable liquid holding tip attached, and a signal transmitting device. A signal transmitted from the signal transmitting device may be used in a variety of ways to yield information regarding the performance of the apparatus. This information may be provided via direct detection of the signal by an operator of the apparatus. Alternatively, the signal may be detected by a programmable signal detecting device, interpreted by the apparatus, and then displayed in a form that is understandable to the operator. Furthermore, the liquid holding tip may be modified to enable different forms of signal transmission.Type: GrantFiled: March 9, 2007Date of Patent: January 18, 2011Assignee: Artel, Inc.Inventors: Richard H. Curtis, Kirby Pilcher, David L. Bohnsack, Charles Ewing, George Rodrigues, John T. Bradshaw, Marc Boillat
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Patent number: 7791716Abstract: A system and related method for improved liquid delivery evaluation using a solution containing one or more dyes such that the solution exhibits multiple distinct detectable light absorbance spectral features for calibrating or testing over extended volume or dilution ranges are described. The system includes: a photometric instrument capable of measuring optical absorbance at multiple wavelengths; one or more sample solutions to be dispensed using the liquid delivery system whose performance is being tested or calibrated; and vessels optionally pre-filled, or filled by the user, with diluent solution. The sample solutions contain one or more dyes, chosen so that multiple distinct detectable light absorbance spectral features, such as peaks and/or valleys and/or plateaus of the solution can be distinguished for volume or dilution ranges of interest.Type: GrantFiled: April 7, 2008Date of Patent: September 7, 2010Assignee: Artel, Inc.Inventors: Ceara McNally, John Thomas Bradshaw, Richard H. Curtis, Charles A. Ewing, Keith J. Albert, Tanya R. Knaide, Alexis L. Rogers
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Patent number: 7772008Abstract: A method, apparatus and kit for precisely and accurately determining the volume of a liquid aliquot which can be used to calibrate a liquid delivery device. Two dye-containing solutions, a sample solution and a diluent solution, are prepared such that each solution contains a different dye, with the solutions having different absorbance values at a first wavelength and at a second wavelength. The absorbance value of a known volume of diluent solution is measured at both wavelengths. Either one aliquot of sample solution is added to the diluent solution and then absorbance measurements are made at both wavelengths, or multiple aliquots of sample solution are mixed serially into the diluent solution and then absorbance measurements are made at both wavelengths after each aliquot is added. The volume of any single aliquot is calculated by using a two-step formula which is based on the Beer-Lambert law.Type: GrantFiled: January 6, 2006Date of Patent: August 10, 2010Assignee: Artel, Inc.Inventors: Richard H. Curtis, Ceara J. McNally, Charles A. Ewing
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Publication number: 20090251681Abstract: A system and related method for improved liquid delivery evaluation using a solution containing one or more dyes such that the solution exhibits multiple distinct detectable light absorbance spectral features for calibrating or testing over extended volume or dilution ranges are described. The system includes: a photometric instrument capable of measuring optical absorbance at multiple wavelengths; one or more sample solutions to be dispensed using the liquid delivery system whose performance is being tested or calibrated; and vessels optionally pre-filled, or filled by the user, with diluent solution. The sample solutions contain one or more dyes, chosen so that multiple distinct detectable light absorbance spectral features, such as peaks and/or valleys and/or plateaus of the solution can be distinguished for volume or dilution ranges of interest.Type: ApplicationFiled: April 7, 2008Publication date: October 8, 2009Applicant: Artel, Inc.Inventors: Ceara J. McNally, John Thomas Bradshaw, Richard H. Curtis, Charles A. Ewing, Keith J. Albert, Tanya R. Knaide, Alexis L. Rogers
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Publication number: 20090250664Abstract: A system and related method for improved liquid delivery evaluation using a solution containing one or more dyes such that the solution exhibits multiple distinct detectable light absorbance spectral features for calibrating or testing over extended volume or dilution ranges are described. The system includes: a photometric instrument capable of measuring optical absorbance at multiple wavelengths; one or more sample solutions to be dispensed using the liquid delivery system whose performance is being tested or calibrated; and vessels optionally pre-filled, or filled by the user, with diluent solution. The sample solutions contain one or more dyes, chosen so that multiple distinct detectable light absorbance spectral features, such as peaks and/or valleys and/or plateaus of the solution can be distinguished for volume or dilution ranges of interest.Type: ApplicationFiled: April 7, 2008Publication date: October 8, 2009Applicant: Artel, Inc.Inventors: Richard H. Curtis, Ceara McNally, Charles A. Ewing, John Thomas Bradshaw
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Publication number: 20070227271Abstract: A liquid aspirating and dispensing apparatus and method of using the apparatus. Among other elements, the apparatus includes a liquid handling device having one or more channel members, each of which has a removable liquid holding tip attached, and a signal transmitting device. A signal transmitted from the signal transmitting device may be used in a variety of ways to yield information regarding the performance of the apparatus. This information may be provided via direct detection of the signal by an operator of the apparatus. Alternatively, the signal may be detected by a programmable signal detecting device, interpreted by the apparatus, and then displayed in a form that is understandable to the operator. Furthermore, the liquid holding tip may be modified to enable different forms of signal transmission.Type: ApplicationFiled: March 9, 2007Publication date: October 4, 2007Applicants: Artel, Inc., Seyonic SAInventors: Richard H. Curtis, Kirby Pilcher, David L. Bohnsack, Charles Ewing, George Rodrigues, John T. Bradshaw, Marc Boillat
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Publication number: 20070161114Abstract: A method, apparatus and kit for precisely and accurately determining the volume of a liquid aliquot which can be used to calibrate a liquid delivery device. Two dye-containing solutions, a sample solution and a diluent solution, are prepared such that each solution contains a different dye, with the solutions having different absorbance values at a first wavelength and at a second wavelength. The absorbance value of a known volume of diluent solution is measured at both wavelengths. Either one aliquot of sample solution is added to the diluent solution and then absorbance measurements are made at both wavelengths, or multiple aliquots of sample solution are mixed serially into the diluent solution and then absorbance measurements are made at both wavelengths after each aliquot is added. The volume of any single aliquot is calculated by using a two-step formula which is based on the Beer-Lambert law.Type: ApplicationFiled: January 6, 2006Publication date: July 12, 2007Applicant: Artel. Inc.Inventors: Richard Curtis, Ceara McNally, Charles Ewing
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Patent number: 6423379Abstract: The present invention is directed to a mineral-based coating composition that can be used on a wide range of substrate surfaces. The composition is comprised of a mineral extender, such as a delaminated hydrated aluminum silicate based clays, having an aspect ratio of about 11 to 1, water, a homopolymer polyvinyl acetate emulsion, a co-polymer polyvinyl acetate emulsion, an acrylic emulsion binder containing a metal dioxide and a buffering agent, a surfactant and a defloculant. Also provided is a method of preparing the mineral-based coating composition. The mineral-based coating composition may be applied to various substrate surfaces to form artistic medium surfaces. The present invention also provides a method of making an artistic medium surface using the composition of the present invention.Type: GrantFiled: December 7, 1999Date of Patent: July 23, 2002Inventor: Charles Ewing
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Patent number: 6258412Abstract: The present invention is directed to a mineral-based coating composition that can be used on a wide range of substrate surfaces. The composition is comprised of a mineral extender, such as a delaminated hydrated aluminum silicate based clays, having an aspect ratio of about 11 to 1, water, a homopolymer polyvinyl acetate emulsion, a co-polymer polyvinyl acetate emulsion, an acrylic emulsion binder containing a metal dioxide and a buffering agent, a surfactant and a defloculant. Also provided is a method of preparing the mineral-based coating composition. The mineral-based coating composition may be applied to various substrate surfaces to form artistic medium surfaces. The present invention also provides a method of making an artistic medium surface using the composition of the present invention.Type: GrantFiled: June 3, 1997Date of Patent: July 10, 2001Inventor: Charles Ewing