Inventor

Keizo Amagami

Inventor

Kadoma, JP

Overview

1976–1984

Patent span

Electricity

Primary field (CPC H)

Patents· 17 as inventor

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

H05Bprimary

H05BElectric heating40%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems23%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications10%

G05FSystems for regulating electric or magnetic variables8%

H02HEmergency protective circuit arrangements5%

H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

F24CDomestic stoves or ranges3%

H01FMagnets3%

PatentTitleYear

4,490,596'Induction cooking apparatus having cooling arrangement therefor'1984 4,447,691'Circuit for detecting a utensil load placed asymmetrically relative to an induction heating coil'1984 4,446,350'Induction heating cooking apparatus'1984 4,317,975'Induction heating apparatus with means for detecting zero crossing point of high-frequency oscillation to determine triggering time'1982 4,147,910'Power adjustment with variable frequency and duty-cycle control for induction heating apparatus'1979 4,145,592'Induction heating apparatus with means for detecting zero crossing point of high-frequency oscillation to determine triggering time'1979 4,129,767'Induction heating apparatus having timing means responsive to temporary removal of cooking implement'1978 4,114,009'Switching and heat control mechanism for induction heating cooking apparatus having a plurality of work coils'1978 4,092,510'Multiple-load induction heating cooking apparatus with means for eliminating interference between two or more commutation circuits'1978 4,074,101'Induction heating apparatus using a pair of inversely parallel connected gate-controlled switching devices'1978 4,055,740'Induction heating apparatus using a saturable reactor for power control purposes'1977 4,016,390'Induction heating apparatus with protective circuit arrangement'1977 4,016,392'Pan detector for induction heating apparatus'1977 4,002,875'High frequency heating apparatus'1977 3,993,885'Pan detector for an induction heating apparatus'1976 3,989,916'Induction heating appliance for a cooking utensil'1976 3,978,307'Induction heating apparatus with protective circuit arrangement'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1984Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (17)· patent assignee history

1976–1982Based in Kadoma, JP· patent location history

1976Based in Kodama-gun, JP· patent location history

1977–1984Based in Takatsuki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD	17	1976–1984

Locations

Location	Patents	Span
Kadoma, JP	12	1976–1982
Takatsuki, JP	4	1977–1984
Kodama-gun, JP	1	1976