US 12,224,091 B2
Ferromagnetic-polymer composite material and structures comprising same
Noah Sturcken, New York, NY (US); Michael Lekas, Brooklyn, NY (US); Ryan Davies, New York, NY (US); Denis Shishkov, Brooklyn, NY (US); and Matthew Cavallaro, New York, NY (US)
Assigned to Ferric Inc., New York, NY (US)
Filed by Ferric Inc., New York, NY (US)
Filed on Jul. 16, 2021, as Appl. No. 17/377,886.
Prior Publication US 2023/0027090 A1, Jan. 26, 2023
Int. Cl. H01F 1/03 (2006.01); H01F 1/26 (2006.01); H01F 10/32 (2006.01); H01F 17/04 (2006.01); H01F 27/24 (2006.01); H01F 27/28 (2006.01); H01F 41/02 (2006.01); H01F 41/16 (2006.01); H01L 23/522 (2006.01); H01F 41/00 (2006.01)
CPC H01F 1/0302 (2013.01) [H01F 1/26 (2013.01); H01F 10/3222 (2013.01); H01F 10/3231 (2013.01); H01F 27/24 (2013.01); H01F 27/28 (2013.01); H01F 41/0246 (2013.01); H01F 41/16 (2013.01); H01L 23/5227 (2013.01); H01F 2017/048 (2013.01); H01F 41/00 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An inductor comprising:
a core comprising:
a polymer; and
a plurality of ferromagnetic film platelets disposed in the polymer, each ferromagnetic film platelet comprising:
first and second insulator layers; and
a ferromagnetic layer disposed between the first and second insulator layers, the ferromagnetic layer comprising:
a hard ferromagnetic layer having a magnetic coercivity of at least about 100 Oe; and
a soft ferromagnetic layer having a magnetic coercivity of less than or equal to about 1 Oe,
wherein the hard and soft ferromagnetic layers are magnetically coupled; and
a conductive winding that turns around in a spiral manner on an outside of the core.