Inventor
SOBU MASAKI
JP12 patents
⚠️ This page may combine multiple inventors who share the name “SOBU MASAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TDK CORP
11 patentsUS9620777B2Apr 11, 2017
Positive electrode and lithium ion secondary battery using thereof
TDK CORP155 citations97
US7504759B2Mar 17, 2009
Surface acoustic wave element, surface acoustic wave device, duplexer, and method of making surface acoustic wave element
TDK CORP8 citations81
US7411333B2Aug 12, 2008
Surface acoustic wave device
TDK CORP10 citations80
US7760615B2Jul 20, 2010
Rewritable phase-change optical recording medium
TDK CORP3 citations60
US7352114B2Apr 1, 2008
Surface acoustic wave element, surface acoustic wave device, surface acoustic wave duplexer, and method of manufacturing surface acoustic wave element
TDK CORP3 citations60
US10658657B2May 19, 2020
Negative electrode active material, and negative electrode and lithium ion secondary battery using the negative electrode active material
TDK CORP0 citations51
US10243204B2Mar 26, 2019
Negative electrode active material, and negative electrode and lithium ion secondary battery using the negative electrode active material
TDK CORP0 citations51
US9887416B2Feb 6, 2018
Negative electrode active material, and negative electrode and lithium ion secondary battery using the negative electrode active material
TDK CORP0 citations51
US9083042B2Jul 14, 2015
Negative electrode active material, electrode containing the same, and lithium ion secondary battery having the electrode
TDK CORP0 citations51
US9825295B2Nov 21, 2017
Positive electrode active material and lithium-ion secondary battery
TDK CORP0 citations47
US9559352B2Jan 31, 2017
Active material, electrode using same, and lithium ion secondary battery
TDK CORP0 citations40