Patent assignee · JP · COMPANY

COORSTEK KK

30Patents
29Active
30Granted
53Portfolio score

Filing activity: Nov 19, 2007 → Nov 5, 2021 · 1 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US10008402B1 Vertical wafer boat Electricity 7 Active
US9868270B2 Wavelength converting member Electricity 3 Active
US10216076B2 Ceramic composite, phosphor for projector including the same, and light emitting device for projector including the same Mechanical Engineering; Lighting; Heating 2 Active
US10026633B2 Wafer boat and manufacturing method of the same Chemistry; Metallurgy 1 Active
US10170283B2 Focus ring for plasma processing apparatus Electricity 1 Active
US11201217B2 Nitride semiconductor substrate Electricity 1 Active
US10974183B2 Break filter using a silicon carbide porous body and manufacturing method of the break filter Electricity 1 Active
US9748344B2 Nitride semiconductor substrate having recesses at interface between base substrate and initial nitride Electricity 1 Active
US10068858B2 Compound semiconductor substrate Electricity 1 Active
US11264243B2 Conductive diffuser and manufacturing method of the same Electricity 0 Active
US11760694B2 Alumina sintered body and manufacturing method therefor Chemistry; Metallurgy 0 Active
US10825895B2 Nitride semiconductor substrate Electricity 0 Active
US10559679B2 Nitride semiconductor epitaxial substrate Electricity 0 Active
US10674566B2 Planar heater Electricity 0 Active
US10593790B2 Nitride semiconductor substrate and method for manufacturing the same Electricity 0 Active
US9938195B2 Heat insulating material containing a porous sintered body formed of MgAl2O4 Mechanical Engineering; Lighting; Heating 0 Active
US11512247B2 Phosphor plate Emerging Cross-Sectional Technologies 0 Active
US11072555B2 Glass member Electricity 0 Active
US10252933B2 Silica glass member and method of manufacturing the same Chemistry; Metallurgy 0 Active
US9428728B2 Carrier for undifferentiated cell culture and subculture method thereof Chemistry; Metallurgy 0 Active
US9784403B2 Heat insulator Chemistry; Metallurgy 0 Active
US9530846B2 Nitride semiconductor substrate Electricity 0 Active
US10916687B2 Silica glass member, process for producing the same, and process for bonding ceramic and silica glass General 0 Revoked
US10222519B2 Composite silica glass made light diffusion member Physics 0 Active
US11605716B2 Nitride semiconductor substrate and method of manufacturing the same Electricity 0 Active

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.