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Inventor

Yohachi Yamashita

Inventor
Yokohama, JP

Overview

22→
Patents
1980–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 22 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B06Bprimary
B06BMethods or apparatus for generating or transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency, e.g. for performing mechanical work in general22%
H10NElectric solid-state devices not otherwise provided for15%
C04BLime, magnesia11%
A61BDiagnosis9%
H01GCapacitors7%
G10KSound-producing devices5%
H01BCables4%
H01FMagnets4%
H01LSemiconductor devices4%
Y10TTechnical subjects covered by former us classification4%
PatentTitleYear
10,984,941Inductor element202110,886,056Inductor element20219,972,766Piezoelectric transducer, ultrasonic probe, and piezoelectric transducer manufacturing method20189,966,524Ultrasonic probe, piezoelectric transducer, method of manufacturing ultrasonic probe, and method of manufacturing piezoelectric transducer20188,292,818'Acoustic lens composition, ultrasonic probe, and ultrasonic diagnostic apparatus'20128,152,729'Two-dimensional array ultrasonic probe'20127,705,519'Acoustic backing composition, ultrasonic probe and ultrasonic diagnostic apparatus'20107,572,224'Ultrasonic probe and ultrasonic diagnostic apparatus'20097,432,638'Acoustic backing composition, ultrasonic probe and ultrasonic diagnostic apparatus'20087,288,069'Ultrasonic probe and method of manufacturing the same'20076,640,634'Ultrasonic probe, method of manufacturing the same and ultrasonic diagnosis apparatus'20036,238,481'Method of manufacturing ultrasonic probe and ultrasonic diagnostic apparatus'20016,153,967'Ultrasonic probe and ultrasonic diagnostic apparatus'20006,020,675'Ultrasonic probe'20005,410,209'Piezoelectric material and ultrasonic probe'19955,402,791'Piezoelectric single crystal, ultrasonic probe, and array-type ultrasonic probe'19955,295,487'Ultrasonic probe'19945,182,695'Ceramic composition and electronic part using the same'19935,164,882'Ceramic capacitor'19925,059,566'High-dielectric constant ceramic composite and ceramic capacitor elements'19914,818,736'High dielectric constant type ceramic composition'19894,224,174'Piezoelectric oxide materials'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1993Based in Kawasaki, JP· patent location history
1989–2012Patents assigned to TOSHIBA KK (17)· patent assignee history
1989–2018Based in Yokohama, JP· patent location history
1991–2012Based in Kanagawa, JP· patent location history
2012Patents assigned to YAMASHITA YOHACHI (2)· patent assignee history
2012Patents assigned to HOSONO YASUHARU (1)· patent assignee history
2018Patents assigned to TOSHIBA MEDICAL SYS CORP (2)· patent assignee history
2021Patents assigned to TDK CORP (2)· patent assignee history
2021Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TOSHIBA KK171989–2012
TDK CORP22021
TOSHIBA MEDICAL SYS CORP22018
YAMASHITA YOHACHIself22012
HOSONO YASUHARU12012
Locations
LocationPatentsSpan
Yokohama, JP151989–2018
Kanagawa, JP31991–2012
Tokyo, JP22021
Kawasaki, JP21980–1993