Inventor

Mitsuaki Arakawa

Inventor

Hillsborough, CA, US

Overview

37→

Patents

1981–2005

Patent span

Physics

Primary field (CPC G)

Patents· 37 as inventor

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

G01Rprimary

G01RMeasuring electric variables72%

G01NInvestigating or analysing materials by determining their chemical or physical properties4%

H01RElectrically-conductive connections4%

H03HImpedance networks, e.g. resonant circuits4%

H04BTransmission4%

A61BDiagnosis2%

G01VGeophysics2%

H01FMagnets2%

H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner2%

H03JTuning resonant circuits2%

PatentTitleYear

6,847,208'Tube array coil for quadrupole resonance (QR) scanning'2005 6,751,496'Inherently de-coupled sandwiched solenoidal array coil'2004 6,493,572'Inherently de-coupled sandwiched solenoidal array coil'2002 6,377,836'RF coil array for vertical field MRI'2002 5,670,881'Discrete step remotely adjustable matching circuit for MRI RF coils'1997 5,663,645'Spatially orthogonal rectangular coil pair suitable for vertical magnetic field MRI system'1997 5,565,779'MRI front end apparatus and method of operation'1996 5,543,713'Ground breaker for multiple control lines'1996 5,543,712'Parasitic compensating matching circuit integral with ground breaker for MRI RF coils'1996 5,539,314'RF shield for four-post vertical field magnet used for MRI'1996 5,483,158'Method and apparatus for tuning MRI RF coils'1996 5,461,314'MRI front end apparatus and method of operation'1995 5,436,600'MRI multi-frequency DSB and SSB RF synthesizer'1995 5,386,191'RF coil providing reduced obstruction access to image volume in transverse magnet MRI system'1995 5,376,885'MRI RF ground breaker assembly'1994 5,371,466'MRI RF ground breaker assembly'1994 5,278,505'Self-cancelling RF receive coil used to decouple MRI transmit/receive RF coils'1994 D0337684'Pad for a lumbar spine coil for a magnetic resonance imaging device'1993 5,184,074'Real-time MR imaging inside gantry room'1993 5,172,061'Q control for capacitively coupled MRI/MRSI RF coil'1992 RE033259'Method and apparatus for rapid NMR imaging of nuclear parameters with an object'1990 4,881,034'Switchable MRI RF coil array with individual coils having different and overlapping fields of view'1989 4,855,680'Enhanced decoupling of MRI RF coil pairs during RF tuning of MRI RF transmit coil'1989 4,783,629'RF coil for MRI with self-tracking ganged coupling capacitors'1988 4,782,298'MRI QD RF coil having diode switched detuning circuit producing reduced artifact'1988 4,763,076'MRI transmit coil disable switching via RF in/out cable'1988 4,752,736'Center fed QD MRI RF coil'1988 4,740,752'Non-overlapping qd MRI RF coil'1988 4,707,664'QD MRI RE coil using non-homogeneous and non-uniform RF field distribution'1987 4,703,274'Arrangement of RF coils and related method for magnetic resonance imaging of a selected inner-volume'1987 4,703,272'Apparatus and method for decoupling MRI RF coil from selected body portions using passive components'1987 4,695,801'Matched guadrature coils for MRI with minimized intercoil coupling'1987 4,682,125'RF coil coupling for MRI with tuned RF rejection circuit using coax shield choke'1987 4,599,565'Method and apparatus for rapid NMR imaging using multi-dimensional reconstruction techniques'1986 4,471,305'Method and apparatus for rapid NMR imaging of nuclear parameters with an object'1984 4,318,043'Method and apparatus for rapid NMR imaging of nuclear densities within an object'1982 4,297,637'Method and apparatus for mapping lines of nuclear density within an object using nuclear magnetic resonance'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1996Patents assigned to UNIV CALIFORNIA (29)· patent assignee history

1981Based in Forest City, CA, US· patent location history

1982–1986Based in San Mateo, CA, US· patent location history

1987–2004Based in Hillsborough, CA, US· patent location history

1997–2004Patents assigned to TOSHIBA AMERICA MRI INC (4)· patent assignee history

1997Patents assigned to TOSHIBA AMERICA INC (1)· patent assignee history

2005Patents assigned to QUANTUM MAGNETICS INC (1)· patent assignee history

2005Based in San Diego, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
UNIV CALIFORNIA	29	1981–1996
TOSHIBA AMERICA MRI INC	4	1997–2004
QUANTUM MAGNETICS INC	1	2005
TOSHIBA AMERICA INC	1	1997

Locations

Location	Patents	Span
Hillsborough, California, US	32	1987–2004
San Mateo, California, US	3	1982–1986
San Diego, California, US	1	2005
Forest City, California, US	1	1981