The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 2026
Filed:
Oct. 19, 2021
Google Llc, Mountain View, CA (US);
Kristy Mckeating, San Francisco, CA (US);
Herschel Watkins, Woodacre, CA (US);
GOOGLE LLC, Mountain View, CA (US);
Abstract
The present disclosure provides an assay device for determining a concentration of hemoglobin in a sample. The device includes a separation membrane containing a cell lysing reagent that is present on the separation membrane in an amount greater than 200 micrograms/square centimeter to less than 675 micrograms/square centimeter. Further, the device includes a downstream detection membrane configured to elicit a quantifiable response in the presence of hemoglobin. The detection membrane includes an asymmetric membrane having a first plurality of pores located towards an upstream side of the detection membrane and a second plurality of pores located towards a downstream side of the detection membrane. The first plurality of pores are larger than the second plurality of pores. The present disclosure also provides methods for using a vertical flow assay device to lyse the red blood cells in the sample to quantify the level of hemoglobin present via reflectance spectroscopy.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile