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公开(公告)号:US10351831B2
公开(公告)日:2019-07-16
申请号:US15801114
申请日:2017-11-01
Applicant: Bio-Rad Laboratories, Inc.
Abstract: Fusion polypeptides having a heterologous 5′-3′ exonuclease domain linked to a polymerase that does not naturally have 5′-3′ exonuclease activity, as well as methods of their use are provided. Other aspects are also disclosed.
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公开(公告)号:US10330675B2
公开(公告)日:2019-06-25
申请号:US15003536
申请日:2016-01-21
Applicant: Bio-Rad Laboratories, Inc.
Inventor: Ning Liu
IPC: G01N33/543
Abstract: Immunoblotting systems and method are provided. In one embodiment, the method may be achieved by applying an antibody solution to a surface of a membrane having an optically detectable protein and a target protein transferred thereon, wherein the application of the antibody solution is guided by a signal emitted from the optically detectable protein; and detecting the target protein. Systems and other methods are also described and illustrated.
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公开(公告)号:US10284756B2
公开(公告)日:2019-05-07
申请号:US15449786
申请日:2017-03-03
Applicant: Bio-Rad Laboratories, Inc.
Inventor: Evelio Perez , Evan P. Thrush , Stephen L. R. Swihart , Brian D. Hall
Abstract: Techniques and systems for implementing fast, fixed-focal-length lens imaging systems for molecular biology or genetics applications are provided. In particular, techniques and structures are provided for allowing for precise alignment of the optical and imaging components of such imaging systems during assembly with a minimal amount of adjustment.
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公开(公告)号:US10279350B2
公开(公告)日:2019-05-07
申请号:US15365894
申请日:2016-11-30
Applicant: Bio-Rad Laboratories, Inc.
Inventor: Benjamin J. Hindson , Kevin D. Ness , Billy W. Colston, Jr. , Fred P. Milanovich , Donald A. Masquelier
IPC: B01L3/00 , B01F13/00 , B01F15/00 , B01L3/02 , B01L7/00 , B29C45/00 , C12Q1/686 , G01N21/3563 , G01N21/49 , G01N21/64 , B01F3/08 , B29L31/00
CPC classification number: B01L3/502784 , B01F3/0807 , B01F13/0062 , B01F15/00922 , B01F2003/0834 , B01F2003/0842 , B01F2215/0037 , B01L3/0241 , B01L3/502715 , B01L7/52 , B01L7/525 , B01L2200/0673 , B01L2200/0689 , B01L2200/10 , B01L2200/12 , B01L2300/041 , B01L2300/0654 , B01L2300/0816 , B01L2300/0819 , B01L2300/0858 , B01L2300/0867 , B01L2300/1822 , B01L2400/0478 , B01L2400/0487 , B01L2400/049 , B01L2400/0622 , B29C45/0053 , B29C45/006 , B29C2045/0079 , B29L2031/752 , C12Q1/686 , G01N21/3563 , G01N21/49 , G01N21/6428 , G01N21/6486 , G01N2021/6439 , Y02A90/26
Abstract: Methods of generating droplets. In an exemplary method, a device including a sample well, a carrier well, a droplet well, and a plurality of microfluidic channels is selected. The microfluidic channels include a first channel, a second channel, and a third channel. A discrete volume of sample-containing fluid is placed into the sample well, and a discrete volume of carrier fluid is placed into the carrier well. A pressure differential is created after placing the discrete volumes, to cause fluid flow. Sample-containing fluid flows from the sample well to a droplet-generation region of the device via the first channel. Carrier fluid flows from the carrier well to the droplet-generation region via the second channel. Sample-containing droplets and carrier fluid flow from the droplet-generation region to the droplet well via the third channel.
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公开(公告)号:US10261058B2
公开(公告)日:2019-04-16
申请号:US14592308
申请日:2015-01-08
Applicant: Bio-Rad Laboratories, Inc.
Inventor: Jeff Habel
Abstract: One embodiment of the invention is directed to a method of analyzing liquid chromatography data. The method comprises collecting, by a data processing system, first volume fractions data from a first liquid chromatography column for a first absorbance wavelength of light λ1 from a first run of a liquid chromatography process on a mixture, wherein the first liquid chromatography column screens for a first characteristic of the mixture. The method further comprising, normalizing a first relative peak area for a first volume of a component of interest in the mixture for the first absorbance wavelength λ1 to obtain a first set of purity quotient values PQ1, collecting second volume fractions data from a second liquid chromatography column for a second absorbance wavelength of light λ2 from a second run of a liquid chromatography process on the mixture, wherein the second liquid chromatography column screens for a second characteristic of the mixture, normalizing a second relative peak area for the second volume of the component of interest in the mixture for the second absorbance wavelength λ2 to obtain a second set of purity quotient values PQ2, storing the values PQ1 and PQ2 in a memory, calculating a difference between values PQ1 and PQ2 for each volume fraction location of the first and second volumes to obtain a first set of purity quotient difference (“PQD”) values, displaying in a graphical display the first set of PQD values, and determining which volume fractions to pool together based on the display of the first set of PQD values.
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公开(公告)号:US10258989B2
公开(公告)日:2019-04-16
申请号:US15365888
申请日:2016-11-30
Applicant: Bio-Rad Laboratories, Inc.
Inventor: Kevin D. Ness , Benjamin J. Hindson , Billy W. Colston, Jr. , Donald A. Masquelier
IPC: B01L3/00 , B01F3/08 , B01F13/00 , B01L3/02 , B01L7/00 , G01N21/3563 , C12Q1/686 , G01N21/64 , B01F15/00 , B29C45/00 , G01N21/49 , B29L31/00
Abstract: Methods of making a droplet-generating device. In an exemplary method, an upper member is injection molded. The upper member includes a bottom surface and also includes a first microfluidic channel, a second microfluidic channel, and a third microfluidic channel each formed in the bottom surface. The upper member has a plurality of openings each extending completely through the upper member from the bottom surface and creating a side wall region of a sample well, a carrier well, and a droplet well. A cover layer is attached to the bottom surface of the upper member, such that the cover layer seals a bottom side of each microfluidic channel. The microfluidic channels meet one another to create a droplet-generation region. The sample well, the carrier well, and the droplet well are connected to the droplet-generation region via the first, second, and third microfluidic channels, respectively.
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公开(公告)号:US10161947B2
公开(公告)日:2018-12-25
申请号:US14702019
申请日:2015-05-01
Applicant: Bio-Rad Laboratories, Inc.
Abstract: Methods, apparatuses, and systems are disclosed for analyzing quality control (QC) strategies that are applied to testing processes an analyte in order to meet an acceptable level of probability of patient harm that could result from incorrect test results. The measure of patient harm takes into account severity of patient harm, as well as its occurrence. Methods include calculating, based on the parameters of the QC strategies and the test apparatus, an expected number of incorrect final results E(Nuf) due to a test system failure. The value of E(Nuf) can be used as part of a calculation of a predicted level of probability patient harm. The ratio of the acceptable level of probability of patient harm to the predicted level of probability patient harm can determine the adequacy of the QC strategies.
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公开(公告)号:US10152519B2
公开(公告)日:2018-12-11
申请号:US15060260
申请日:2016-03-03
Applicant: Bio-Rad Laboratories, Inc.
Inventor: Karl Nedwed , Ty Abshear
Abstract: Systems, methods, and apparatuses are provided for identifying an optimal spectral match and potentially display the compared spectra. A sample spectrum of a sample substance can be compared to reference spectra to identify matches, thereby determining possibilities for what the sample substance is. Correction parameter(s) may be used for the sample spectrum and/or the reference spectrum. Initial value(s) for the correction parameter(s) can be applied to the sample spectrum and/or a reference spectrum, and a similarity score can be determined. The value(s) for the correction parameter(s) can be updated and iteratively improved to provide an optimal similarity score that satisfies a convergence criterion. Data about the reference substances having optimal similarity scores that are above a threshold can be output to a user, e.g., the reference spectra can overlay the sample spectrum. A user can then make a final determination of which reference substance corresponds to the sample substance.
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公开(公告)号:US10131898B2
公开(公告)日:2018-11-20
申请号:US14805348
申请日:2015-07-21
Applicant: Bio-Rad Laboratories, Inc.
Inventor: Xiao-Song Gong
IPC: C12Q1/68 , C12P19/34 , C12N9/96 , C12N9/12 , C12Q1/6844
Abstract: Amplification reaction mixtures comprising a cationic surfactant and an anionic surfactant are provided.
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公开(公告)号:US10119934B2
公开(公告)日:2018-11-06
申请号:US15272257
申请日:2016-09-21
Applicant: Bio-Rad Laboratories, Inc.
Inventor: Craig Rowell , Cory Panattoni , Thomas R. Berkelman , Sean Cater , Shane Petersen , Lee Olech , Xuemei Yang
IPC: G01N27/447 , B01D57/02 , C08F220/56
Abstract: Polyacrylamide gels that offer high resolution in protein separations and are more stable relative to hydrolysis than conventional polyacrylamide gels that rely on Tris or Tris-Bis as buffering agents are made by incorporating triethanolamine in place of most or all of the Tris or Tris-Bis.
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