Patents by Inventor David Rahmlow

David Rahmlow 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: 20240094100
    Abstract: A continuous field flow fractionator includes a membrane, a bottom plate assembly and a top plate assembly that includes an inject port, an inlet port, at least one orthogonal flow inlet port, at least one orthogonal flow outlet port, and at least two sample outlet ports. The top plate assembly, the membrane, and the bottom plate assembly define a separation channel. The solvent flowing from the at least one orthogonal flow inlet port impinges on particles of a sample flowing between the inject port to the at least two sample outlet ports in the orthogonal flow region. The particles of the sample flow to the at least two sample outlet ports according to sizes of the particles of the sample, resulting in fractions of the sample in accordance with the sizes of the particles.
    Type: Application
    Filed: September 15, 2023
    Publication date: March 21, 2024
    Inventor: David Rahmlow
  • Patent number: 11686678
    Abstract: A new liquid flow cell assembly for light scattering measurements is disclosed which utilized a floating manifold system. The assembly operates with minimal stacked tolerances by aligning the cell to the windows within a manifold and independently aligning the cell to the read head directly. This configuration enables the ability to replace the flow cell or the flow cell/manifold assembly within a light scattering instrument without the need to realign the flow through elements with the light scattering illumination source while still maintaining reproducible, quality data. Some embodiments employ wide bore cells which enable the measurement of process analytic technology (PAT) including online monitoring of reactions.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: June 27, 2023
    Assignee: WYATT TECHNOLOGY CORPORATION
    Inventors: David Rahmlow, Matthew Greenstreet, Shiladitya Sen
  • Publication number: 20220212123
    Abstract: The present disclosure describes an apparatus of managing solvent associated with a field flow fractionator. In an exemplary embodiment, the apparatus includes (1) a union assembly coupled to a detector flow output from at least one detector coupled to a field flow fractionator, and (2) a recycle and waste assembly coupled to an output of the union assembly and a channel cross flow output of the field flow fractionator.
    Type: Application
    Filed: October 14, 2021
    Publication date: July 7, 2022
    Applicant: Wyatt Technology Corporation
    Inventors: Steven P. Trainoff, David Rahmlow
  • Publication number: 20210318237
    Abstract: A new liquid flow cell assembly for light scattering measurements is disclosed which utilized a floating manifold system. The assembly operates with minimal stacked tolerances by aligning the cell to the windows within a manifold and independently aligning the cell to the read head directly. This configuration enables the ability to replace the flow cell or the flow cell/manifold assembly within a light scattering instrument without the need to realign the flow through elements with the light scattering illumination source while still maintaining reproducible, quality data. Some embodiments employ wide bore cells which enable the measurement of process analytic technology (PAT) including online monitoring of reactions.
    Type: Application
    Filed: January 19, 2021
    Publication date: October 14, 2021
    Applicant: Wyatt Technology Corporation
    Inventors: David Rahmlow, Matthew Greenstreet, Shiladitya Sen
  • Patent number: 10895531
    Abstract: A new liquid flow cell assembly for light scattering measurements is disclosed which utilized a floating manifold system. The assembly operates with minimal stacked tolerances by aligning the cell to the windows within a manifold and independently aligning the cell to the read head directly. This configuration enables the ability to replace the flow cell or the flow cell/manifold assembly within a light scattering instrument without the need to realign the flow through elements with the light scattering illumination source while still maintaining reproducible, quality data. Some embodiments employ wide bore cells which enable the measurement of process analytic technology (PAT) including online monitoring of reactions.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: January 19, 2021
    Assignee: WYATT TECHNOLOGY CORPORATION
    Inventors: David Rahmlow, Matthew Greenstreet, Shiladitya Sen
  • Publication number: 20200072747
    Abstract: A new liquid flow cell assembly for light scattering measurements is disclosed which utilized a floating manifold system. The assembly operates with minimal stacked tolerances by aligning the cell to the windows within a manifold and independently aligning the cell to the read head directly. This configuration enables the ability to replace the flow cell or the flow cell/manifold assembly within a light scattering instrument without the need to realign the flow through elements with the light scattering illumination source while still maintaining reproducible, quality data. Some embodiments employ wide bore cells which enable the measurement of process analytic technology (PAT) including online monitoring of reactions.
    Type: Application
    Filed: November 5, 2019
    Publication date: March 5, 2020
    Applicant: Wyatt Technology Corporation
    Inventors: David Rahmlow, Matthew Greenstreet, Shiladitya Sen
  • Patent number: 10466173
    Abstract: A new liquid flow cell assembly for light scattering measurements is disclosed which utilized a floating manifold system. The assembly operates with minimal stacked tolerances by aligning the cell to the windows within a manifold and independently aligning the cell to the read head directly. This configuration enables the ability to replace the flow cell or the flow cell/manifold assembly within a light scattering instrument without the need to realign the flow through elements with the light scattering illumination source while still maintaining reproducible, quality data. Some embodiments employ wide bore cells which enable the measurement of process analytic technology (PAT) including online monitoring of reactions.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: November 5, 2019
    Assignee: WYATT TECHNOLOGY CORPORATION
    Inventors: David Rahmlow, Matthew Greenstreet, Shiladitya Sen
  • Publication number: 20190107487
    Abstract: A new liquid flow cell assembly for light scattering measurements is disclosed which utilized a floating manifold system. The assembly operates with minimal stacked tolerances by aligning the cell to the windows within a manifold and independently aligning the cell to the read head directly. This configuration enables the ability to replace the flow cell or the flow cell/manifold assembly within a light scattering instrument without the need to realign the flow through elements with the light scattering illumination source while still maintaining reproducible, quality data. Some embodiments employ wide bore cells which enable the measurement of process analytic technology (PAT) including online monitoring of reactions.
    Type: Application
    Filed: October 6, 2017
    Publication date: April 11, 2019
    Inventors: David Rahmlow, Matthew Greenstreet, Shiladitya Sen