Patents by Inventor Thomas E. Wheat
Thomas E. Wheat 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: 11331596Abstract: A chromatography system includes a first chromatography column for receiving and separating a flow stream, a plurality of traps configured to trap a plurality of distinct flow segments exiting the first chromatography column during separation of the flow stream, and a second chromatography column operatively associated with the plurality of traps for receiving and separating the distinct flow segments. The system can include at-column dilution at trapping and separating stages thereof. A chromatography method for operating the chromatographic system includes measuring a plurality of time segments corresponding to a plurality of peaks of a fluid sample flowing through the first chromatographic column, and sequentially fluidly coupling the plurality of distinct flow segments with the corresponding plurality of traps during time segments corresponding to the plurality of peaks.Type: GrantFiled: September 16, 2020Date of Patent: May 17, 2022Assignee: Waters Technologies CorporationInventors: Amanda B. Dlugasch, Thomas E. Wheat, Daniel Root, Jean-Michel Plankeele, Isabelle Francois, Edward R. Aig
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Patent number: 11175266Abstract: A method of preparing a liquid mixture for use in a liquid chromatography system is provided. The mixture comprises one or more acids, one or more bases, one or more solvents and water, and the method comprises the steps of: calculating pH and/or solvent concentration at a particular time t from a user-determined gradient function; and, based on the values obtained, calculating percent acid, percent base, percent solvent and percent water in the liquid mixture at time t. A liquid chromatography system incorporating such method is also provided.Type: GrantFiled: August 14, 2019Date of Patent: November 16, 2021Assignee: Waters Technologies CorporationInventors: Thomas E. Wheat, Patricia McConville, John R. Lamoureux, Aparna Chavali
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Publication number: 20200406165Abstract: A chromatography system includes a first chromatography column for receiving and separating a flow stream, a plurality of traps configured to trap a plurality of distinct flow segments exiting the first chromatography column during separation of the flow stream, and a second chromatography column operatively associated with the plurality of traps for receiving and separating the distinct flow segments. The system can include at-column dilution at trapping and separating stages thereof. A chromatography method for operating the chromatographic system includes measuring a plurality of time segments corresponding to a plurality of peaks of a fluid sample flowing through the first chromatographic column, and sequentially fluidly coupling the plurality of distinct flow segments with the corresponding plurality of traps during time segments corresponding to the plurality of peaks.Type: ApplicationFiled: September 16, 2020Publication date: December 31, 2020Applicant: Waters Technologies CorporationInventors: Amanda B. Dlugasch, Thomas E. Wheat, Daniel Root, Jean-Michel Plankeele, Isabelle Francois, Edward R. Aig
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Patent number: 10799813Abstract: A chromatography system includes a first chromatography column for receiving and separating a flow stream, a plurality of traps configured to trap a plurality of distinct flow segments exiting the first chromatography column during separation of the flow stream, and a second chromatography column operatively associated with the plurality of traps for receiving and separating the distinct flow segments. The system can include at-column dilution at trapping and separating stages thereof. A chromatography method for operating the chromatographic system includes measuring a plurality of time segments corresponding to a plurality of peaks of a fluid sample flowing through the first chromatographic column, and sequentially fluidly coupling the plurality of distinct flow segments with the corresponding plurality of traps during time segments corresponding to the plurality of peaks.Type: GrantFiled: January 25, 2017Date of Patent: October 13, 2020Assignee: Waters Technologies CorporationInventors: Amanda B. Dlugasch, Thomas E. Wheat, Daniel Root, Jean-Michel Plankeele, Isabelle Francois, Edward R. Aig
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Patent number: 10668406Abstract: The present disclosure relates to an enhanced multi-dimensional chromatography system and method using selectable At-Column Dilution to improve compatibility of the interface and transfer between the multiple dimensions. The use of At-Column Dilution (“ACD”) with multi-dimensional chromatography can provide greater retention of the diverted components on subsequent stationary phases, and increase the sensitivity and peak shape of the component(s) separated on subsequent dimensions.Type: GrantFiled: January 20, 2017Date of Patent: June 2, 2020Assignee: Waters Technologies CorporationInventors: Amanda B. Dlugasch, Thomas E. Wheat, Dan Root, Jean-Michel Plankeele, Isabelle Francois, Edward R. Aig
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Publication number: 20200166487Abstract: A method of preparing a liquid mixture for use in a liquid chromatography system is provided. The mixture comprises one or more acids, one or more bases, one or more solvents and water, and the method comprises the steps of: calculating pH and/or solvent concentration at a particular time t from a user-determined gradient function; and, based on the values obtained, calculating percent acid, percent base, percent solvent and percent water in the liquid mixture at time t. A liquid chromatography system incorporating such method is also provided.Type: ApplicationFiled: August 14, 2019Publication date: May 28, 2020Inventors: Thomas E. Wheat, Patricia McConville, John R. Lamoureux, Aparna Chavali
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Patent number: 10422776Abstract: A method of preparing a liquid mixture for use in a liquid chromatography system is provided. The mixture comprises one or more acids, one or more bases, one or more solvents and water, and the method comprises the steps of: calculating pH and/or solvent concentration at a particular time t from a user-determined gradient function; and, based on the values obtained, calculating percent acid, percent base, percent solvent and percent water in the liquid mixture at time t. A liquid chromatography system incorporating such method is also provided.Type: GrantFiled: May 8, 2015Date of Patent: September 24, 2019Assignee: Waters Technologies CorporationInventors: Thomas E. Wheat, Patricia McConville, John R. Lamoureux, Aparna Chavali
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Publication number: 20170269041Abstract: A method of preparing a liquid mixture for use in a liquid chromatography system is provided. The mixture comprises one or more acids, one or more bases, one or more solvents and water, and the method comprises the steps of: calculating pH and/or solvent concentration at a particular time t from a user-determined gradient function; and, based on the values obtained, calculating percent acid, percent base, percent solvent and percent water in the liquid mixture at time t. A liquid chromatography system incorporating such method is also provided.Type: ApplicationFiled: May 8, 2015Publication date: September 21, 2017Applicant: Waters Technologies CorporationInventors: Thomas E. Wheat, Patricia McConville, John R. Lamoureux, Aparna Chavali
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Publication number: 20170209812Abstract: The present disclosure relates to an enhanced multi-dimensional chromatography system and method using selectable At-Column Dilution to improve compatibility of the interface and transfer between the multiple dimensions. The use of At-Column Dilution (“ACD”) with multi-dimensional chromatography can provide greater retention of the diverted components on subsequent stationary phases, and increase the sensitivity and peak shape of the component(s) separated on subsequent dimensions.Type: ApplicationFiled: January 20, 2017Publication date: July 27, 2017Applicant: Waters Technologies CorporationInventors: Amanda B. Dlugasch, Thomas E. Wheat, Dan Root, Jean-Michel Plankeele, Isabelle Francois, Edward R. Aig
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Publication number: 20170209811Abstract: A chromatography system includes a first chromatography column for receiving and separating a flow stream, a plurality of traps configured to trap a plurality of distinct flow segments exiting the first chromatography column during separation of the flow stream, and a second chromatography column operatively associated with the plurality of traps for receiving and separating the distinct flow segments. The system can include at-column dilution at trapping and separating stages thereof. A chromatography method for operating the chromatographic system includes measuring a plurality of time segments corresponding to a plurality of peaks of a fluid sample flowing through the first chromatographic column, and sequentially fluidly coupling the plurality of distinct flow segments with the corresponding plurality of traps during time segments corresponding to the plurality of peaks.Type: ApplicationFiled: January 25, 2017Publication date: July 27, 2017Inventors: Amanda B. Dlugasch, Thomas E. Wheat, Daniel Root, Jean-Michel Plankeele, Isabelle Francois, Edward R. Aig
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Patent number: 9643103Abstract: A method of preparing a liquid mixture for use in a liquid chromatography system is provided. The mixture comprises one or more acids, one or more bases, one or more salts, and one or more solvents, and the method comprises the steps of: i) calculating pH and/or salt concentration at a particular time t from a user-determined gradient function; and ii) based on the values obtained in step (i), calculating percent acid, percent base, percent salt and percent solvent in the liquid mixture at time t. A liquid chromatography system incorporating such method is also provided.Type: GrantFiled: May 24, 2011Date of Patent: May 9, 2017Assignee: Waters Technologies CorporationInventors: Richard W. Andrews, John Heden, Michael Jackson, John Lamoureux, Guo-Zhong Li, Barry Sunray, Thomas E. Wheat
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Publication number: 20130206666Abstract: A method of preparing a liquid mixture for use in a liquid chromatography system is provided. The mixture comprises one or more acids, one or more bases, one or more salts, and one or more solvents, and the method comprises the steps of: i) calculating pH and/or salt concentration at a particular time t from a user-determined gradient function; and ii) based on the values obtained in step (i), calculating percent acid, percent base, percent salt and percent solvent in the liquid mixture at time t. A liquid chromatography system incorporating such method is also provided.Type: ApplicationFiled: May 24, 2011Publication date: August 15, 2013Applicant: WATERS TECHNOLOGIES CORPORATIONInventors: Richard W. Andrews, John Heden, Michael Jackson, John Lamoureux, Guo-Zhong Li, Barry Sunray, Thomas E. Wheat
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Patent number: 7909994Abstract: A method and device for increasing the loading capacity of a chromatography column through dilution of a mobile phase at the head of the column. A strong mobile phase is provided for dissolving a sample. A sample is injected into the strong mobile phase, and subsequently diluted with a weak mobile phase. The resulting sample-containing weak mobile phase is passed through a chromatography column for retention and separation of the components of the sample.Type: GrantFiled: March 18, 2010Date of Patent: March 22, 2011Assignee: Waters Technologies CorporationInventors: Thomas E. Wheat, Charles H. Phoebe, Mark K. Baynham, Uwe D. Neue, Raymond P. Fisk, Richard C. Turner
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Patent number: 7875175Abstract: A method and device for increasing the loading capacity of a chromatography column through dilution of a mobile phase at the head of the column. A strong mobile phase is provided for dissolving a sample. A sample is injected into the strong mobile phase, and subsequently diluted with a weak mobile phase. The resulting sample-containing weak mobile phase is passed through a chromatography column for retention and separation of the components of the sample.Type: GrantFiled: September 7, 2004Date of Patent: January 25, 2011Assignee: Waters Technologies CorporationInventors: Thomas E. Wheat, Charles H. Phoebe, Mark K. Baynham, Uwe Dieter Neue, Raymond P. Fisk, Richard C. Turner
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Publication number: 20100176043Abstract: A method and device for increasing the loading capacity of a chromatography column through dilution of a mobile phase at the head of the column. A strong mobile phase is provided for dissolving a sample. A sample is injected into the strong mobile phase, and subsequently diluted with a weak mobile phase. The resulting sample-containing weak mobile phase is passed through a chromatography column for retention and separation of the components of the sample.Type: ApplicationFiled: March 18, 2010Publication date: July 15, 2010Applicant: WATERS TECHNOLOGIES CORPORATIONInventors: Thomas E. Wheat, Charles H. Phoebe, Mark K. Baynham, Uwe Dieter Neue, Raymond P. Fisk, Richard C. Turner
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Publication number: 20080264848Abstract: A method and device for increasing the loading capacity of a chromatography column through dilution of a mobile phase at the head of the column. A strong mobile phase is provided for dissolving a sample. A sample is injected into the strong mobile phase, and subsequently diluted with a weak mobile phase. The resulting sample-containing weak mobile phase is passed through a chromatography column for retention and separation of the components of the sample.Type: ApplicationFiled: September 7, 2004Publication date: October 30, 2008Applicant: Waters Investments LimitedInventors: Thomas E. Wheat, Charles H. Phoebe, Mark K. Baynham, Uwe Dieter Neue, Raymond P. Fisk, Richard C. Turner
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Patent number: 6790361Abstract: A method and device for increasing the loading capacity of a chromatography column through dilution of a mobile phase at the head of the column. A strong mobile phase is provided for dissolving a sample. A sample is injected into the strong mobile phase, and subsequently diluted with a weak mobile phase. The resulting sample-containing weak mobile phase is passed through a chromatography column for retention and separation of the components of the sample.Type: GrantFiled: April 14, 2003Date of Patent: September 14, 2004Assignee: Waters CorporationInventors: Thomas E. Wheat, Charles H. Phoebe, Mark K. Baynham, Uwe Dieter Neue, Raymond P. Fisk, Richard C. Turner
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Publication number: 20040035789Abstract: A method and device for increasing the loading capacity of a chromatography column through dilution of a mobile phase at the head of the column. A strong mobile phase is provided for dissolving a sample. A sample is injected into the strong mobile phase, and subsequently diluted with a weak mobile phase. The resulting sample-containing weak mobile phase is passed through a chromatography column for retention and separation of the components of the sample.Type: ApplicationFiled: April 14, 2003Publication date: February 26, 2004Applicant: Waters CorporationInventors: Thomas E. Wheat, Charles H. Phoebe, Mark K. Baynham, Uwe Dieter Neue, Raymond P. Fisk, Richard C. Turner
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Publication number: 20020117447Abstract: A method and device for increasing the loading capacity of a chromatography column through dilution of a mobile phase at the head of the column. A strong mobile phase is provided for dissolving a sample. A sample is injected into the strong mobile phase, and subsequently diluted with a weak mobile phase. The resulting sample-containing weak mobile phase is passed through a chromatography column for retention and separation of the components of the sample.Type: ApplicationFiled: November 21, 2001Publication date: August 29, 2002Inventors: Thomas E. Wheat, Charles H. Phoebe, Mark K. Baynham, Uwe Dieter Neue, Raymond P. Fisk, Richard C. Turner
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Patent number: 4585587Abstract: The novel antigenic linear peptides of this invention comprise peptides of from 4 to 13 amino acids, which are characterized by containing the sequence valine-leucine-aspartic acid-methionine. These compounds correspond with the amino acids 231 to 243, or segments thereof including sequence 239-242 of mouse LDH-C.sub.4. The coupounds have utility in vaccines for reducing the fertility of female mammals.Type: GrantFiled: October 19, 1984Date of Patent: April 29, 1986Assignee: Northwestern UniversityInventors: Erwin Goldberg, Thomas E. Wheat