Inventor · Kasai, JP

Tsutomu Yoshimura

30Patents
12h-index
54Co-inventors
84Inventor score

Filing activity: Jun 29, 1989 → Feb 14, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US5963502A Clock-synchronous type semiconductor memory device capable of outputting read clock signal at correct timing Physics 107 Expired
US5994934A Delay locked loop circuit Electricity 92 Expired
US6101151A Synchronous semiconductor memory device employing temporary data output stop scheme Physics 58 Expired
US6198322A Duty-ratio correction circuit and clock generation circuit Electricity 42 Expired
US6392897B1 Circuit module Electricity 31 Expired
US5210239A Ouinone derivatives and pharmacological use Chemistry; Metallurgy 29 Expired
US5385942A Quinone derivatives and pharmacological use Chemistry; Metallurgy 27 Expired
US6396888B1 Digital data transmission system Electricity 26 Expired
US6570456B2 Clock generator for generating internal clock signal synchronized with reference clock signal Electricity 16 Expired
US6873209B2 Input buffer circuit having function of canceling offset voltage Electricity 14 Expired
US6252467A Voltage controlled oscillator including a plurality of differential amplifiers Electricity 12 Expired
US7519140B2 Automatic frequency correction PLL circuit Electricity 12 Active
US6160434A Ninety-degree phase shifter Electricity 12 Expired
US6987825B1 Digital synchronous circuit for stably generating output clock synchronized with input data Electricity 11 Expired
US6278303A Semiconductor device that can have standby current reduced by ceasing supply of clock signal, and that can maintain status of internal circuit Emerging Cross-Sectional Technologies 6 Expired
US5793823A Synchronization circuit that captures and phases an external signal Electricity 6 Expired
US7250808B2 Differential charge pump circuit Electricity 5 Expired
US6707319B2 Frequency comparator with malfunction reduced and phase-locked state detecting circuit using the same Electricity 5 Expired
US7295072B2 Amplifier circuit Electricity 3 Expired
US5037827A Glycerin derivative and its pharmacological use Chemistry; Metallurgy 2 Expired
US5273985A Glycerin derivative and its pharmacological use Chemistry; Metallurgy 1 Expired
US11835849B2 Actinic ray-sensitive or radiation-sensitive resin composition, resist film, pattern forming method, and method for manufacturing electronic device Physics 0 Active
US5476863A Glycerin derivative and its pharmacological use Chemistry; Metallurgy 0 Expired
US11161920B2 Method for producing carboxyl-group-containing nitrile rubber Chemistry; Metallurgy 0 Active
US11650501B2 Actinic ray-sensitive or radiation-sensitive resin composition, resist film, pattern forming method, and method for manufacturing electronic device General 0 Revoked

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.