US 12,240,239 B2
Microfluidic passage with protective layer
Juan Carlos Ramos, Corvallis, OR (US); and Stefan Enrique Lucchini, Corvallis, OR (US)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 18/008,961
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Jun. 12, 2020, PCT No. PCT/US2020/037368
§ 371(c)(1), (2) Date Dec. 7, 2022,
PCT Pub. No. WO2021/251979, PCT Pub. Date Dec. 16, 2021.
Prior Publication US 2023/0241889 A1, Aug. 3, 2023
Int. Cl. B41J 2/16 (2006.01); B41J 2/14 (2006.01); B81B 7/00 (2006.01)
CPC B41J 2/14129 (2013.01) [B41J 2/1601 (2013.01); B41J 2/164 (2013.01); B81B 7/0025 (2013.01); B81B 2203/0338 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A microfluidic die comprising:
a microfluidic passage;
a protective layer provided adjacent to internal surfaces of the microfluidic passage, the protective layer comprising:
a protective nano-crystalline material; and
a protective amorphous matrix encapsulating the protective nano-crystalline material.