Patent assignee · JP · UNIVERSITY

TOHOKU UNIVERSITY

849Patents
806Active
849Granted
62Portfolio score

Filing activity: Oct 1, 1975 → Oct 25, 2023 · 191 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US8828886B2 Low dielectric constant insulating film and method for forming the same Electricity 396 Active
US8045772B2 System and method for comparing dental X-ray images Physics 67 Active
US8039893B2 CMOS inverter coupling circuit comprising vertical transistors Electricity 54 Active
US4848983A Catalytic coal gasification by utilizing chlorides Emerging Cross-Sectional Technologies 47 Expired
US7802384B2 Method and device for excavating submerged stratum Fixed Constructions 40 Active
US7626665B2 Copper alloys and liquid-crystal display device Physics 37 Active
US7355238B2 Nonvolatile semiconductor memory device having nanoparticles for charge retention Emerging Cross-Sectional Technologies 37 Expired
US7906219B2 Metallic glass laminates, production methods and applications thereof Emerging Cross-Sectional Technologies 36 Expired
US7708844B2 Method of forming metallic glass Emerging Cross-Sectional Technologies 33 Active
US7901374B2 Fluid injection device Human Necessities 31 Active
US6703645B2 Spin filter Electricity 31 Expired
US8520433B1 Magnetoresistive element and magnetic memory Physics 27 Active
US8001583B2 Network failure detection method and network failure detection system Electricity 26 Active
US7975901B2 Bonding apparatus and wire bonding method Electricity 22 Active
US9624565B2 Nanocrystal-containing titanium alloy and production method therefor Chemistry; Metallurgy 22 Active
US4659786A Low modulus thermoplastic elastomeric polyester-polysiloxane block copolymers Chemistry; Metallurgy 21 Expired
US6476411B1 Intersubband light emitting element Electricity 18 Expired
US4665984A Method of measuring crustal stress by hydraulic fracture based on analysis of crack growth in rock Fixed Constructions 17 Expired
US8242015B2 Film forming method and film forming apparatus Electricity 17 Active
US8188372B2 Flex-rigid printed wiring board and manufacturing method thereof Emerging Cross-Sectional Technologies 17 Active
US8173487B2 Semiconductor element, method for manufacturing same, and electronic device including same Emerging Cross-Sectional Technologies 16 Active
US8642066B2 Sustained drug delivery system Human Necessities 16 Active
US7782433B2 Copper alloy and liquid-crystal display device Physics 14 Active
US8017400B2 Method for transformation using mutant acetolactate synthase gene Chemistry; Metallurgy 14 Active
US8680633B1 Magnetoresistive element and magnetic memory Electricity 14 Active

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