Patent ID: 9714729
Date: 2017-07-25
CPC Classifications: B01J,C04B,F16L,Y10T

Claim:
1. A method of forming complex structures in a ceramic-, glass-or glass-ceramic-body microfluidic module, the method comprising the steps of: providing a green-state refractory-material structure comprising least a portion of a body of a microfluidic module; providing a removable insert formed of a carbon or of a carbonaceous material, an external surface of the insert comprising a negative surface of a desired surface to be formed in the microfluidic module; machining an opening in the green-state structure; positioning the insert in the opening, leaving an open volume between the external surface of the insert and an interior surface of the opening; firing the green-state structure and the insert together; during firing, closing the open volume; and after firing is complete, removing the insert.