US 11,939,266 B2
Ceramic discs and rods, methods of manufacture thereof and articles comprising the same
Jeffery Caswell, Plainville, CT (US); Piyush Kar, New Britain, CT (US); Alex Hill, South Windsor, CT (US); Alfred M. Romano, Terryville, CT (US); and Aravind Mohanram, Avon, CT (US)
Assigned to MOTT CORPORATION, Farmington, CT (US)
Appl. No. 17/778,539
Filed by Mott Corporation, Farmington, CT (US)
PCT Filed Nov. 24, 2020, PCT No. PCT/US2020/061964
§ 371(c)(1), (2) Date May 20, 2022,
PCT Pub. No. WO2021/108376, PCT Pub. Date Jun. 3, 2021.
Claims priority of provisional application 62/941,241, filed on Nov. 27, 2019.
Prior Publication US 2022/0348504 A1, Nov. 3, 2022
Int. Cl. C04B 35/10 (2006.01); C04B 35/101 (2006.01); C04B 35/626 (2006.01); C04B 38/06 (2006.01); C04B 41/00 (2006.01)
CPC C04B 35/101 (2013.01) [C04B 35/6264 (2013.01); C04B 38/067 (2013.01); C04B 41/0072 (2013.01); C04B 2235/3217 (2013.01); C04B 2235/608 (2013.01); C04B 2235/658 (2013.01); C04B 2235/94 (2013.01); C04B 2237/343 (2013.01); C04B 2237/525 (2013.01); C04B 2237/765 (2013.01); C04B 2237/84 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A dual density disc comprising:
a dense outer tube comprising alumina having a purity of greater than 96%; and
a porous core comprising alumina of a lower density than a density of the dense outer tube; wherein the porous core has an alumina purity of greater than 99%.