Inventor

Kanji Kawakami

Inventor

Mito, JP

Overview

33→

Patents

1980–2016

Patent span

Physics

Primary field (CPC G)

Patents· 33 as inventor

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

G01Lprimary

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure22%

G11BInformation storage based on relative movement between record carrier and transducer22%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

Y10TTechnical subjects covered by former us classification5%

G01DMeasuring not specially adapted for a specific variable4%

G01PMeasuring linear or angular speed, acceleration, deceleration, or shock4%

H10NElectric solid-state devices not otherwise provided for4%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h104%

B29CShaping or joining of plastics2%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts2%

PatentTitleYear

9,502,698'Non-aqueous electrolyte battery'2016 6,861,992'Antenna'2005 5,719,729'Magnetic head and recording and reproducing apparatus having an arrangement for improving coincidence between a magnetic center of a read head and physical center of a write head'1998 5,671,107'Large capacity magnetic disc apparatus with a particular relationship between pole thickness, saturated flux density, and recording wavelength'1997 5,541,789'Magnetic recording apparatus with magnetic head on slider having applied load larger than buoyant force acting on slider so that gap between magnetic head and magnetic disk is smaller than total thickness of protective layer and lubricating layer on disk'1996 5,307,214'Magnetic recording apparatus'1994 5,251,083'Flying head slider and method of producing the same'1993 5,245,493'Magnetic information storage apparatus including magnetic head and method for making magnetic head'1993 5,128,821'Flying head slider and magnetic disk unit employing same'1992 5,079,662'Compound magnetic head having a recording head and a reproducing magnetoresitive head integrated therein'1992 4,949,209'Thin-film magnetic head having special input/output terminal backing connection and method of fabricating the same'1990 4,861,398'Method for making a thin film magnetic head'1989 4,773,060'Optical information recording device'1988 4,760,102'Porous polytetrafluoroethylene material'1988 4,689,652'Image sensor'1987 4,670,969'Method of making silicon diaphragm pressure sensor'1987 4,665,282'Tablet type coordinate input apparatus using elastic wave'1987 4,633,099'Feedback circuit for a semiconductor active element sensor'1986 4,604,899'Semiconductor-type pressure transducer'1986 4,591,780'Constant current source device having a ratio metricity between supply voltage and output current'1986 4,558,238'Pressure transducer using integrated circuit elements'1985 4,556,807'Pressure transducer with temperature compensation circuit'1985 4,511,878'Pressure sensor with improved semiconductor diaphragm'1985 4,503,394'Magnetoresistive sensor having a closed domain structure and electrode biasing'1985 4,418,372'Magnetic rotary encoder'1983 4,337,665'Semiconductor pressure detector apparatus with zero-point temperature compensation'1982 4,322,980'Semiconductor pressure sensor having plural pressure sensitive diaphragms and method'1982 4,295,115'Semiconductor absolute pressure transducer assembly and method'1981 4,291,293'Semiconductor absolute pressure transducer assembly and method'1981 4,263,884'Electronic fuel feed system'1981 4,257,274'Capacitive pressure sensor'1981 4,233,848'Strain gauge pressure transducer apparatus having an improved impedance bridge'1980 4,216,477'Nozzle head of an ink-jet printing apparatus with built-in fluid diodes'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1998Patents assigned to HITACHI LTD (30)· patent assignee history

1980–1985Based in Katsuta, JP· patent location history

1980–1982Based in Ibaraki, JP· patent location history

1985Patents assigned to HITACHI CONSTRUCTION MACHINERY (1)· patent assignee history

1985–1998Based in Mito, JP· patent location history

1988Patents assigned to DAIKIN IND LTD (1)· patent assignee history

1992–1993Based in Hiratsuka, JP· patent location history

2005Patents assigned to HITACHI INT ELECTRIC INC (1)· patent assignee history

2005Patents assigned to KAWAKAMI KANJI (1)· patent assignee history

2016Based in Osaka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	30	1980–1998
DAIKIN IND LTD	1	1988
HITACHI CONSTRUCTION MACHINERY	1	1985
HITACHI INT ELECTRIC INC	1	2005
KAWAKAMI KANJIself	1	2005

Locations

Location	Patents	Span
Mito, JP	17	1985–1998
Katsuta, JP	6	1980–1985
Ibaraki, JP	5	1980–1982
Hiratsuka, JP	2	1992–1993
Osaka, JP	1	2016