	US 12,064,741 B2
	Reversing bias in polymer synthesis electrode array
Bichlien Nguyen, Seattle, WA (US); Karin Strauss, Seattle, WA (US); Gagan Gupta, Bellevue, WA (US); and Richard Rouse, Redmond, WA (US)
Assigned to MICROSOFT TECHNOLOGY LICENSING, LLC, Redmond, WA (US)
Filed by MICROSOFT TECHNOLOGY LICENSING, LLC, Redmond, WA (US)
Filed on Jul. 27, 2022, as Appl. No. 17/815,380.
Application 17/815,380 is a division of application No. 16/435,363, filed on Jun. 7, 2019.
Prior Publication US 2022/0362734 A1, Nov. 17, 2022
Int. Cl. B01J 19/00 (2006.01)

CPC B01J 19/0046 (2013.01) [B01J 19/0006 (2013.01); B01J 2219/0018 (2013.01); B01J 2219/00454 (2013.01); B01J 2219/00596 (2013.01); B01J 2219/00612 (2013.01); B01J 2219/00626 (2013.01); B01J 2219/00637 (2013.01); B01J 2219/00653 (2013.01); B01J 2219/00713 (2013.01); B01J 2219/00722 (2013.01); B01J 2219/00725 (2013.01)]

19 Claims

1. A solid support for solid-phase synthesis of polymers comprising:

a substrate;

a surface layer comprising an inert conductive material;

an embedded circuit comprising a spatially addressable electrode connected to a positive voltage driver and a negative voltage driver; and

control circuitry configured to switch the spatially addressable electrode from anode to cathode by controlling the positive voltage driver and the negative voltage driver.