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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.:

US 11723838 B1

PDFFull Text
Date of Patent:
Aug. 15, 2023

Filed:

Apr. 30, 2020

Preservative removal from eye drops

Applicant:

Tearclear Corp., Copley, OH (US);

Inventors:

Michael Wilson, Middleburg, FL (US);

Michael Williams, Keystone Heights, FL (US);

Deniz Hay, Gainesville, FL (US);

Michael Malanga, Midland, MI (US);

Assignee:

TearClear Corp., Copley, OH (US);

Attorney:

Wilson Sonsini Goodrich & Rosati

Primary Examiner:

Clare M Perrin

Int. Cl.
CPC ...
A61J 1/14 (2023.01); A61K 31/382 (2006.01); A61K 31/4985 (2006.01); A61K 31/517 (2006.01); A61K 31/5377 (2006.01); A61K 31/5383 (2006.01); B01D 71/26 (2006.01); B01J 20/28 (2006.01); B01J 20/26 (2006.01); A61F 9/00 (2006.01);
U.S. Cl.
CPC ...
A61J 1/1456 (2015.05); A61J 1/1468 (2015.05); A61K 31/382 (2013.01); A61K 31/4985 (2013.01); A61K 31/517 (2013.01); A61K 31/5377 (2013.01); A61K 31/5383 (2013.01); B01D 71/26 (2013.01); B01J 20/265 (2013.01); B01J 20/28004 (2013.01); B01J 20/28016 (2013.01); B01J 20/28042 (2013.01); A61F 9/0008 (2013.01); B01J 2220/52 (2013.01); B01J 2220/56 (2013.01);
Abstract

A particulate plug for removing a preservative from a solution, suspension, or emulsion comprising a drug is presented. The plug comprises microparticles of oxidized polyolefin (OxPO). The microparticles are irregular-shaped rigid aggregates and are sized and packed to yield a hydraulic permeability greater than 0.01 Da. The OxPO have absorbed portions of a preservative to be removed and/or a drug for delivery in solution, as can the copolymer.

Find Patent Forward Citations

Wilson, Michael. (2023). Preservative removal from eye drops (U.S. Patent No. 11723838). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11723838

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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