Patents by Inventor Ramon Evangelista

Ramon Evangelista 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).

  • Publication number: 20240094227
    Abstract: Provided herein are antigenic molecules that can be used to generate antibodies capable of binding to a vitamin D derivative, such as 25-hydroxyvitamin D2 and/or 25-hydroxyvitamin D3, or a 25-hydroxyvitamin D analog, such as a vitamin D-C22 immunogenic molecule or compound. Antibodies produced using these antigenic molecules, and related antigenic compounds, are also described. In addition, disclosed herein are methods for detecting vitamin D deficiency in a subject, methods for treating a subject suspected of having a vitamin D deficiency, methods for monitoring progression of vitamin D deficiency in a subject, and methods for monitoring treatment of vitamin D deficiency in a subject in need thereof. The methods involve the detection or quantification of 25-hydroxyvitamin D2 and D3.
    Type: Application
    Filed: October 12, 2023
    Publication date: March 21, 2024
    Applicant: Siemens Healthcare Diagnostics Inc.
    Inventors: Niver Panosian Sahakian, Bruce A. Campbell, Spencer Hsiang-Hsi Lin, James Vincent Freeman, Qimu Liao, Ramon A. Evangelista
  • Patent number: 11815517
    Abstract: Provided herein are antigenic molecules that can be used to generate antibodies capable of binding to a vitamin D derivative, such as 25-hydroxyvitamin D2 and/or 25-hydroxyvitamin D3, or a 25-hydroxyvitamin D analog, such as a vitamin D-C22 immunogenic molecule or compound. Antibodies produced using these antigenic molecules, and related antigenic compounds, are also described. In addition, disclosed herein are methods for detecting vitamin D deficiency in a subject, methods for treating a subject suspected of having a vitamin D deficiency, methods for monitoring progression of vitamin D deficiency in a subject, and methods for monitoring treatment of vitamin D deficiency in a subject in need thereof. The methods involve the detection or quantification of 25-hydroxyvitamin D2 and D3.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: November 14, 2023
    Assignee: Siemens Healthcare Diagnostics Inc.
    Inventors: Niver Panosian Sahakian, Bruce A. Campbell, Spencer Hsiang-Hsi Lin, James Vincent Freeman, Qimu Liao, Ramon A. Evangelista
  • Publication number: 20210055314
    Abstract: Provided herein are antigenic molecules that can be used to generate antibodies capable of binding to a vitamin D derivative, such as 25-hydroxyvitamin D2 and/or 25-hydroxyvitamin D3, or a 25-hydroxyvitamin D analog, such as a vitamin D-C22 immunogenic molecule or compound. Antibodies produced using these antigenic molecules, and related antigenic compounds, are also described. In addition, disclosed herein are methods for detecting vitamin D deficiency in a subject, methods for treating a subject suspected of having a vitamin D deficiency, methods for monitoring progression of vitamin D deficiency in a subject, and methods for monitoring treatment of vitamin D deficiency in a subject in need thereof. The methods involve the detection or quantification of 25-hydroxyvitamin D2 and D3.
    Type: Application
    Filed: November 3, 2020
    Publication date: February 25, 2021
    Applicant: Siemens Healthcare Diagnostics Inc.
    Inventors: Niver Panosian Sahakian, Bruce A. Campbell, Spencer Hsiang-Hsi Lin, James Vincent Freeman, Qimu Liao, Ramon A. Evangelista
  • Patent number: 10837973
    Abstract: Provided herein are antigenic molecules that can be used to generate antibodies capable of binding to a vitamin D derivative, such as 25-hydroxyvitamin D2 and/or 25-hydroxyvitamin D3, or a 25-hydroxyvitamin D analog, such as a vitamin D-C22 immunogenic molecule or compound. Antibodies produced using these antigenic molecules, and related antigenic compounds, are also described. In addition, disclosed herein are methods for detecting vitamin D deficiency in a subject, methods for treating a subject suspected of having a vitamin D deficiency, methods for monitoring progression of vitamin D deficiency in a subject, and methods for monitoring treatment of vitamin D deficiency in a subject in need thereof. The methods involve the detection or quantification of 25-hydroxyvitamin D2 and D3.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: November 17, 2020
    Assignee: Siemens Healthcare Diagnostics Inc.
    Inventors: Niver Panosian Sahakian, Bruce A. Campbell, Spencer Hsiang-Hsi Lin, James Vincent Freeman, Qimu Liao, Ramon A. Evangelista
  • Publication number: 20180372761
    Abstract: Provided herein are antigenic molecules that can be used to generate antibodies capable of binding to a vitamin D derivative, such as 25-hydroxyvitamin D2 and/or 25-hydroxyvitamin D3, or a 25-hydroxyvitamin D analog, such as a vitamin D-C22 immunogenic molecule or compound. Antibodies produced using these antigenic molecules, and related antigenic compounds, are also described. In addition, disclosed herein are methods for detecting vitamin D deficiency in a subject, methods for treating a subject suspected of having a vitamin D deficiency, methods for monitoring progression of vitamin D deficiency in a subject, and methods for monitoring treatment of vitamin D deficiency in a subject in need thereof. The methods involve the detection or quantification of 25-hydroxyvitamin D2 and D3.
    Type: Application
    Filed: March 7, 2018
    Publication date: December 27, 2018
    Applicant: Siemens Healthcare Diagnostics Inc.
    Inventors: NIVER PANOSIAN SAHAKIAN, BRUCE A. CAMPBELL, SPENCER HSIANG-HSI LIN, JAMES VINCENT FREEMAN, QIMU LIAO, RAMON A. EVANGELISTA
  • Publication number: 20140336156
    Abstract: Provided herein are antigenic molecules that can be used to generate antibodies capable of binding to a vitamin D derivative, such as 25-hydroxyvitamin D2 and/or 25-hydroxyvitamin D3, or a 25-hydroxyvitamin D analog, such as a vitamin D-C22 immunogenic molecule or compound. Antibodies produced using these antigenic molecules, and related antigenic compounds, are also described. In addition, disclosed herein are methods for detecting vitamin D deficiency in a subject, methods for treating a subject suspected of having a vitamin D deficiency, methods for monitoring progression of vitamin D deficiency in a subject, and methods for monitoring treatment of vitamin D deficiency in a subject in need thereof. The methods involve the detection or quantification of 25-hydroxyvitamin D2 and D3.
    Type: Application
    Filed: July 18, 2014
    Publication date: November 13, 2014
    Inventors: NIVER PANOSIAN SAHAKIAN, Bruce A. Campbell, Spencer Hsiang-Hsi Lin, JAMES Vincent FREEMAN, Qimu Liao, RAMON A. EVANGELISTA
  • Patent number: 8785603
    Abstract: Provided herein are antigenic molecules that can be used to generate antibodies capable of binding to a vitamin D derivative, such as 25-hydroxyvitamin D2 and/or 25-hydroxyvitamin D3, or a 25-hydroxyvitamin D analog, such as a vitamin D-C22 immunogenic molecule or compound. Antibodies produced using these antigenic molecules, and related antigenic compounds, are also described. In addition, disclosed herein are methods for detecting vitamin D deficiency in a subject, methods for treating a subject suspected of having a vitamin D deficiency, methods for monitoring progression of vitamin D deficiency in a subject, and methods for monitoring treatment of vitamin D deficiency in a subject in need thereof. Also provided are methods and reagents for the detection or quantification of 25-hydroxyvitamin D2 and D3, methods for stabilizing vitamin D analogs, and methods for separating 25-hydroxyvitamin D2 and D3 from vitamin D binding protein in a biological sample.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: July 22, 2014
    Assignee: Siemens Healthcare Diagnostics Inc.
    Inventors: Niver Panosian Sahakian, Bruce A. Campbell, Spencer Hsiang-Hsi Lin, James Vincent Freeman, Qimu Liao, Ramon A. Evangelista
  • Patent number: 8580524
    Abstract: Methods and reagents are disclosed for conducting assays for IgE. Embodiments of the present reagents comprise a conjugate of a macromolecule and a compound comprising a galactose-?-1,3-galactose epitope. Embodiments of the present methods are directed to determining the presence and/or amount of an IgE specific for a galactose-?-1,3-galactose epitope in a sample. A combination is provided in a medium, which comprises the sample and a reagent for determining the presence and/or amount of an IgE specific for a galactose-?-1,3-galactose epitope in a sample wherein the reagent comprises a conjugate of a macromolecule and a compound comprising a galactose-?-1,3-galactose epitope. The combination is subjected to conditions for binding of the IgE to the reagent to form a complex. The presence and/or amount of the complex are detected and the amount of the complex is related to the presence and/or amount of IgE in the sample.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: November 12, 2013
    Assignee: Siemens Healthcare Diagnostics Inc
    Inventors: Utpal Banik, Ramon Evangelista, We-Xing Gan
  • Publication number: 20130059825
    Abstract: Provided herein are antigenic molecules that can be used to generate antibodies capable of binding to a vitamin D derivative, such as 25-hydroxyvitamin D2 and/or 25-hydroxyvitamin D3, or a 25-hydroxyvitamin D analog, such as a vitamin D-C22 immunogenic molecule or compound. Antibodies produced using these antigenic molecules, and related antigenic compounds, are also described. In addition, disclosed herein are methods for detecting vitamin D deficiency in a subject, methods for treating a subject suspected of having a vitamin D deficiency, methods for monitoring progression of vitamin D deficiency in a subject, and methods for monitoring treatment of vitamin D deficiency in a subject in need thereof. Also provided are methods and reagents for the detection or quantification of 25-hydroxyvitamin D2 and D3, methods for stabilizing vitamin D analogs, and methods for separating 25-hydroxyvitamin D2 and D3 from vitamin D binding protein in a biological sample.
    Type: Application
    Filed: April 27, 2012
    Publication date: March 7, 2013
    Applicant: Siemens Healthcare Diagnostics Inc.
    Inventors: Niver Panosian Sahakian, Bruce A. Campbell, Spencer Hsiang-Hsi Lin, James Vincent Freeman, Qimu Liao, Ramon A. Evangelista
  • Publication number: 20120219975
    Abstract: Methods and reagents are disclosed for conducting assays for IgE. Embodiments of the present reagents comprise a conjugate of a macromolecule and a compound comprising a galactose-?-1,3-galactose epitope. Embodiments of the present methods are directed to determining the presence and/or amount of an IgE specific for a galactose-?-1,3-galactose epitope in a sample. A combination is provided in a medium, which comprises the sample and a reagent for determining the presence and/or amount of an IgE specific for a galactose-?-1,3-galactose epitope in a sample wherein the reagent comprises a conjugate of a macromolecule and a compound comprising a galactose-?-1,3-galactose epitope. The combination is subjected to conditions for binding of the IgE to the reagent to form a complex. The presence and/or amount of the complex are detected and the amount of the complex is related to the presence and/or amount of IgE in the sample.
    Type: Application
    Filed: May 8, 2012
    Publication date: August 30, 2012
    Applicant: SIEMENS HEALTHCARE DIAGNOSTICS INC.
    Inventors: Utpal Banik, Ramon Evangelista, Wei-Xing Gan
  • Patent number: 8198035
    Abstract: Methods and reagents are disclosed for conducting assays for IgE. Embodiments of the present reagents comprise a conjugate of a macromolecule and a compound comprising a galactose-?-1,3-galactose epitope. Embodiments of the present methods are directed to determining the presence and/or amount of an IgE specific for a galactose-?-1,3-galactose epitope in a sample. A combination is provided in a medium, which comprises the sample and a reagent for determining the presence and/or amount of an IgE specific for a galactose-?-1,3-galactose epitope in a sample wherein the reagent comprises a conjugate of a macromolecule and a compound comprising a galactose-?-1,3-galactose epitope. The combination is subjected to conditions for binding of the IgE to the reagent to form a complex. The presence and/or amount of the complex are detected and the amount of the complex is related to the presence and/or amount of IgE in the sample.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: June 12, 2012
    Assignee: Siemens Healthcare Diagnostics Inc.
    Inventors: Utpal Banik, Ramon Evangelista, Wei-Xing Gan
  • Patent number: 8034636
    Abstract: In accordance with the present invention, it has been discovered that introduction of hydrophilic sulfoalkyl substituents and/or hydrophilic linkers derived from homocysteic acid, cysteic acid, glycine peptides, tetraethylene oxide, and the like, offset the hydrophobicity of the acridinium ring system to produce a more soluble label which can be attached to an antibody at higher loading before precipitation and aggregation problems are encountered. Additional compounds described herein contain linkers derived from short peptides and tetraethylene oxide which increase aqueous solubility due to hydrogen bonding with water molecules. The present invention also embraces reagents for multiple acridinium labeling for signal amplification composed of a peptide bearing several acridinium esters with sulfonate groups at regularly spaced intervals for increased solubility. The invention also embraces assays employing the above-described compounds.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: October 11, 2011
    Assignee: Quest Diagnostics Investments Incorporated
    Inventors: Ramon Evangelista, Martha Garrity
  • Publication number: 20110124013
    Abstract: Methods and reagents are disclosed for conducting assays for IgE. Embodiments of the present reagents comprise a conjugate of a macromolecule and a compound comprising a galactose-?-1,3-galactose epitope. Embodiments of the present methods are directed to determining the presence and/or amount of an IgE specific for a galactose-?-1,3-galactose epitope in a sample. A combination is provided in a medium, which comprises the sample and a reagent for determining the presence and/or amount of an IgE specific for a galactose-?-1,3-galactose epitope in a sample wherein the reagent comprises a conjugate of a macromolecule and a compound comprising a galactose-?-1,3-galactose epitope. The combination is subjected to conditions for binding of the IgE to the reagent to form a complex. The presence and/or amount of the complex are detected and the amount of the complex is related to the presence and/or amount of IgE in the sample.
    Type: Application
    Filed: November 25, 2009
    Publication date: May 26, 2011
    Applicant: SIEMENS HEALTHCARE DIAGNOSTICS INC.
    Inventors: Utpal Banik, Ramon Evangelista, Wei-Xing Gan
  • Publication number: 20110014721
    Abstract: In accordance with the present invention, it has been discovered that introduction of hydrophilic sulfoalkyl substituents and/or hydrophilic linkers derived from homocysteic acid, cysteic acid, glycine peptides, tetraethylene oxide, and the like, offset the hydrophobicity of the acridinium ring system to produce a more soluble label which can be attached to an antibody at higher loading before precipitation and aggregation problems are encountered. Additional compounds described herein contain linkers derived from short peptides and tetraethylene oxide which increase aqueous solubility due to hydrogen bonding with water molecules. The present invention also embraces reagents for multiple acridinium labeling for signal amplification composed of a peptide bearing several acridinium esters with sulfonate groups at regularly spaced intervals for increased solubility. The invention also embraces assays employing the above-described compounds.
    Type: Application
    Filed: September 23, 2010
    Publication date: January 20, 2011
    Inventors: Ramon Evangelista, Martha Garrity
  • Patent number: 7824928
    Abstract: In accordance with the present invention, it has been discovered that introduction of hydrophilic sulfoalkyl substituents and/or hydrophilic linkers derived from homocysteic acid, cysteic acid, glycine peptides, tetraethylene oxide, and the like, offset the hydrophobicity of the acridinium ring system to produce a more soluble label which can be attached to an antibody at higher loading before precipitation and aggregation problems are encountered. Additional compounds described herein contain linkers derived from short peptides and tetraethylene oxide which increase aqueous solubility due to hydrogen bonding with water molecules. The present invention also embraces reagents for multiple acridinium labeling for signal amplification composed of a peptide bearing several acridinium esters with sulfonate groups at regularly spaced intervals for increased solubility. The invention also embraces assays employing the above-described compounds.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: November 2, 2010
    Assignee: Quest Diagnostics Investments Incorporated
    Inventors: Ramon Evangelista, Martha Garrity
  • Publication number: 20080199973
    Abstract: In accordance with the present invention, it has been discovered that introduction of hydrophilic sulfoalkyl substituents and/or hydrophilic linkers derived from homocysteic acid, cysteic acid, glycine peptides, tetraethylene oxide, and the like, offset the hydrophobicity of the acridinium ring system to produce a more soluble label which can be attached to an antibody at higher loading before precipitation and aggregation problems are encountered. Additional compounds described herein contain linkers derived from short peptides and tetraethylene oxide which increase aqueous solubility due to hydrogen bonding with water molecules. The present invention also embraces reagents for multiple acridinium labeling for signal amplification composed of a peptide bearing several acridinium esters with sulfonate groups at regularly spaced intervals for increased solubility. The invention also embraces assays employing the above-described compounds.
    Type: Application
    Filed: November 7, 2007
    Publication date: August 21, 2008
    Inventors: Ramon Evangelista, Martha Garrity
  • Patent number: 7297555
    Abstract: In accordance with the present invention, it has been discovered that introduction of hydrophilic sulfoalkyl substituents and/or hydrophilic linkers derived from homocysteic acid, cysteic acid, glycine peptides, tetraethylene oxide, and the like, offset the hydrophobicity of the acridinium ring system to produce a more soluble label which can be attached to an antibody at higher loading before precipitation and aggregation problems are encountered. Additional compounds described herein contain linkers derived from short peptides and tetraethylene oxide which increase aqueous solubility due to hydrogen bonding with water molecules. The present invention also embraces reagents for multiple acridinium labeling for signal amplification composed of a peptide bearing several acridinium esters with sulfonate groups at regularly spaced intervals for increased solubility. The invention also embraces assays employing the above-described compounds.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: November 20, 2007
    Assignee: Quest Diagnostics Investments Incorporated
    Inventors: Ramon Evangelista, Martha Garrity
  • Publication number: 20050255528
    Abstract: In accordance with the present invention, it has been discovered that introduction of hydrophilic sulfoalkyl substituents and/or hydrophilic linkers derived from homocysteic acid, cysteic acid, glycine peptides, tetraethylene oxide, and the like, offset the hydrophobicity of the acridinium ring system to produce a more soluble label which can be attached to an antibody at higher loading before precipitation and aggregation problems are encountered. Additional compounds described herein contain linkers derived from short peptides and tetraethylene oxide which increase aqueous solubility due to hydrogen bonding with water molecules. The present invention also embraces reagents for multiple acridinium labeling for signal amplification composed of a peptide bearing several acridinium esters with sulfonate groups at regularly spaced intervals for increased solubility. The invention also embraces assays employing the above-described compounds.
    Type: Application
    Filed: July 14, 2005
    Publication date: November 17, 2005
    Inventors: Ramon Evangelista, Martha Garrity
  • Patent number: 6924154
    Abstract: In accordance with the present invention, it has been discovered that introduction of hydrophilic sulfoalkyl substituents and/or hydrophilic linkers derived from homocysteic acid, cysteic acid, glycine peptides, tetraethylene oxide, and the like, offset the hydrophobicity of the acridinium ring system to produce a more soluble label which can be attached to an antibody at higher loading before precipitation and aggregation problems are encountered. Additional compounds described herein contain linkers derived from short peptides and tetraethylene oxide which increase aqueous solubility due to hydrogen bonding with water molecules. The present invention also embraces reagents for multiple acridinium labeling for signal amplification composed of a peptide bearing several acridinium esters with sulfonate groups at regularly spaced intervals for increased solubility. The invention also embraces assays employing the above-described compounds.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: August 2, 2005
    Assignee: Quest Diagnostics Investments Incorporated
    Inventors: Ramon Evangelista, Martha Garrity
  • Publication number: 20040038294
    Abstract: In accordance with the present invention, it has been discovered that introduction of hydrophilic sulfoalkyl substituents and/or hydrophilic linkers derived from homocysteic acid, cysteic acid, glycine peptides, tetraethylene oxide, and the like, offset the hydrophobicity of the acridinium ring system to produce a more soluble label which can be attached to an antibody at higher loading before precipitation and aggregation problems are encountered. Additional compounds described herein contain linkers derived from short peptides and tetraethylene oxide which increase aqueous solubility due to hydrogen bonding with water molecules. The present invention also embraces reagents for multiple acridinium labeling for signal amplification composed of a peptide bearing several acridinium esters with sulfonate groups at regularly spaced intervals for increased solubility. The invention also embraces assays employing the above-described compounds.
    Type: Application
    Filed: August 20, 2002
    Publication date: February 26, 2004
    Applicant: Quest Diagnostic Investments Incorporated
    Inventors: Ramon Evangelista, Martha Garrity