Patents by Inventor Dan Jonathan Kroll

Dan Jonathan Kroll 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).

  • Patent number: 12578303
    Abstract: An embodiment provides a method for stirring a sample in a cell, including: providing a cell comprising a sample chamber; placing an electrode on an inner surface of the sample chamber, placing a removable stir bar in the sample chamber, the removable stir bar directly contacting and touching the electrode; and wherein the stir bar can be operated to rotate within the sample chamber upon the electrode. Other aspects are described and claimed.
    Type: Grant
    Filed: December 17, 2024
    Date of Patent: March 17, 2026
    Assignee: HACH COMPANY
    Inventors: Corey Alan Salzer, Dan Jonathan Kroll
  • Patent number: 12399110
    Abstract: An embodiment provides a method for digesting at least one analyte of an aqueous sample, including: introducing an aqueous sample comprising at least one analyte into a digestion device comprising one or more carbon substituted material electrodes; digesting the at least one analyte by applying an electrical potential between an anode and a cathode of the digestion device, wherein the digesting comprises a step-wise disintegration; measuring the at least one analyte of the aqueous sample from the digested material, using a measurement device selected from the group consisting of: an electrochemical device and an optical measurement device; and modifying the electrical potential based upon the measurement of the at least one analyte. Other aspects are described and claimed.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: August 26, 2025
    Assignee: HACH COMPANY
    Inventors: Vishnu Vardhanan Rajasekharan, Dan Jonathan Kroll
  • Publication number: 20250116645
    Abstract: An embodiment provides a method for stirring a sample in a cell, including: providing a cell comprising a sample chamber; placing an electrode on an inner surface of the sample chamber, placing a removable stir bar in the sample chamber, the removable stir bar directly contacting and touching the electrode; and wherein the stir bar can be operated to rotate within the sample chamber upon the electrode. Other aspects are described and claimed.
    Type: Application
    Filed: December 17, 2024
    Publication date: April 10, 2025
    Inventors: Corey Alan Salzer, Dan Jonathan Kroll
  • Publication number: 20250067711
    Abstract: An embodiment provides a method for deriving an amount of PFAS substances from a total organic fluoride measurement in a sample, including: removing inorganic fluoride from the sample using one or more of an ion exchange cartridge and an exclusion apparatus; preconcentrating, using a solid phase extraction, at least one PFAS substance in the sample; digesting, using a working electrode and a counter electrode, the at least one PFAS substance to an amount of total organic fluoride; and determining, using an analyzer, the amount of total organic fluoride in the sample. Other aspects are described and claimed.
    Type: Application
    Filed: November 8, 2024
    Publication date: February 27, 2025
    Applicant: HACH COMPANY
    Inventors: Vishnu Vardhanan RAJASEKHARAN, Cary Burton JACKSON, Matthew Ryan SALZER, Dan Jonathan KROLL
  • Patent number: 12210007
    Abstract: An embodiment provides a method for stirring a sample in a cell, including: providing a cell comprising a sample chamber; placing a boron-doped diamond electrode on an inner surface of the sample chamber, placing a removable stir bar in the sample chamber, the removable stir bar directly contacting and touching the boron-doped diamond electrode; and wherein the stir bar can be operated to rotate within the sample chamber upon the boron-doped diamond electrode. Other aspects are described and claimed.
    Type: Grant
    Filed: August 24, 2022
    Date of Patent: January 28, 2025
    Assignee: Hach Company
    Inventors: Corey Alan Salzer, Dan Jonathan Kroll
  • Patent number: 12163937
    Abstract: An embodiment provides a method for deriving an amount of PFAS substances from a total organic fluoride measurement in a sample, including: removing inorganic fluoride from the sample using one or more of an ion exchange cartridge and an exclusion apparatus; preconcentrating, using a solid phase extraction, at least one PFAS substance in the sample; digesting, using a working electrode and a counter electrode, the at least one PFAS substance to an amount of total organic fluoride; and determining, using an analyzer, the amount of total organic fluoride in the sample. Other aspects are described and claimed.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: December 10, 2024
    Assignee: HACH COMPANY
    Inventors: Vishnu Vardhanan Rajasekharan, Cary Burton Jackson, Matthew Ryan Salzer, Dan Jonathan Kroll
  • Patent number: 12108318
    Abstract: An embodiment provides a method for transferring information from at least one instrument to an application, including: establishing a central protocol structure, wherein the central protocol structure defines a format for information transmitted utilizing the central protocol structure; transmitting over a short-range wireless communication channel information from the at least one device to the application, wherein the information is formatted in a broadcast packet in view of the central protocol structure; receiving, at the application, information from the at least one device; and performing, within the application, an action with respect to the information within the application, wherein the performing comprises deciphering the information contained in view of the central protocol structure.
    Type: Grant
    Filed: December 15, 2022
    Date of Patent: October 1, 2024
    Assignee: HACH COMPANY
    Inventors: Brian Alan Harmon, Gregory James Lipinski, Joseph Rockstan Williams, Theophilus Brian Mooney, Timothy A. Higgins, Dan Jonathan Kroll, Vishnu Rajasekharan, Corey Alan Salzer
  • Publication number: 20240069002
    Abstract: An embodiment provides a method for stirring a sample in a cell, including: providing a cell comprising a sample chamber; placing a boron-doped diamond electrode on an inner surface of the sample chamber, placing a removable stir bar in the sample chamber, the removable stir bar directly contacting and touching the boron-doped diamond electrode; and wherein the stir bar can be operated to rotate within the sample chamber upon the boron-doped diamond electrode. Other aspects are described and claimed.
    Type: Application
    Filed: August 24, 2022
    Publication date: February 29, 2024
    Inventors: Corey Alan Salzer, Dan Jonathan Kroll
  • Publication number: 20230228726
    Abstract: An embodiment provides a method for deriving an amount of PFAS substances from a total organic fluoride measurement in a sample, including: removing inorganic fluoride from the sample using one or more of an ion exchange cartridge and an exclusion apparatus; preconcentrating, using a solid phase extraction, at least one PFAS substance in the sample; digesting, using a working electrode and a counter electrode, the at least one PFAS substance to an amount of total organic fluoride; and determining, using an analyzer, the amount of total organic fluoride in the sample. Other aspects are described and claimed.
    Type: Application
    Filed: January 20, 2022
    Publication date: July 20, 2023
    Inventors: Vishnu Vardhanan Rajasekharan, Cary Burton Jackson, Matthew Ryan Salzer, Dan Jonathan Kroll
  • Publication number: 20230122443
    Abstract: An embodiment provides a method for transferring information from at least one instrument to an application, including: establishing a central protocol structure, wherein the central protocol structure defines a format for information transmitted utilizing the central protocol structure; transmitting over a short-range wireless communication channel information from the at least one device to the application, wherein the information is formatted in a broadcast packet in view of the central protocol structure; receiving, at the application, information from the at least one device; and performing, within the application, an action with respect to the information within the application, wherein the performing comprises deciphering the information contained in view of the central protocol structure.
    Type: Application
    Filed: December 15, 2022
    Publication date: April 20, 2023
    Applicant: HACH COMPANY
    Inventors: Brian Alan HARMON, Gregory James LIPINSKI, Joseph Rockstan WILLIAMS, Theophilus Brian MOONEY, Timothy A. HIGGINS, Dan Jonathan KROLL, Vishnu RAJASEKHARAN, Corey Alan SALZER
  • Patent number: 11595798
    Abstract: An embodiment provides a method for transferring information from at least one instrument to an application, including: establishing a central protocol structure, wherein the central protocol structure defines a format for information transmitted utilizing the central protocol structure; transmitting over a short-range wireless communication channel information from the at least one device to the application, wherein the information is formatted in a broadcast packet in view of the central protocol structure; receiving, at the application, information from the at least one device; and performing, within the application, an action with respect to the information within the application, wherein the performing comprises deciphering the information contained in view of the central protocol structure.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: February 28, 2023
    Assignee: HACH COMPANY
    Inventors: Brian Alan Harmon, Gregory James Lipinski, Joseph Rockstan Williams, Theophilus Brian Mooney, Timothy A. Higgins, Dan Jonathan Kroll, Vishnu Rajasekharan, Corey Alan Salzer
  • Publication number: 20220187197
    Abstract: An embodiment provides a method for digesting at least one analyte of an aqueous sample, including: introducing an aqueous sample comprising at least one analyte into a digestion device comprising one or more carbon substituted material electrodes; digesting the at least one analyte by applying an electrical potential between an anode and a cathode of the digestion device, wherein the digesting comprises a step-wise disintegration; measuring the at least one analyte of the aqueous sample from the digested material, using a measurement device selected from the group consisting of: an electrochemical device and an optical measurement device; and modifying the electrical potential based upon the measurement of the at least one analyte. Other aspects are described and claimed.
    Type: Application
    Filed: December 15, 2021
    Publication date: June 16, 2022
    Inventors: Vishnu Vardhanan Rajasekharan, Dan Jonathan Kroll
  • Publication number: 20210136540
    Abstract: An embodiment provides a method for transferring information from at least one instrument to an application, including: establishing a central protocol structure, wherein the central protocol structure defines a format for information transmitted utilizing the central protocol structure; transmitting over a short-range wireless communication channel information from the at least one device to the application, wherein the information is formatted in a broadcast packet in view of the central protocol structure; receiving, at the application, information from the at least one device; and performing, within the application, an action with respect to the information within the application, wherein the performing comprises deciphering the information contained in view of the central protocol structure.
    Type: Application
    Filed: October 30, 2020
    Publication date: May 6, 2021
    Inventors: Brian Alan Harmon, Gregory James Lipinski, Joseph Rockstan Williams, Theophilus Brian Mooney, Timothy A. Higgins, Dan Jonathan Kroll, Vishnu Rajasekharan, Corey Alan Salzer