Inventor

Youichi Kondo

Inventor

Tokyo, JP

Overview

1981–2021

Patent span

Physics

Primary field (CPC G)

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

F16Hprimary

F16HGearing7%

F25BRefrigeration machines, plants or systems7%

F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact7%

F28FDetails of heat-exchange and heat-transfer apparatus, of general application7%

G01NInvestigating or analysing materials by determining their chemical or physical properties7%

G02BOptical elements, systems or apparatus7%

G06FElectric digital data processing7%

G10HElectrophonic musical instruments7%

G10LSpeech analysis techniques or speech synthesis7%

H01HElectric switches7%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1981Patents assigned to OLYMPUS OPTICAL CO (1)· patent assignee history

1992Patents assigned to CATERPILLAR MITSUBISHI LTD (1)· patent assignee history

2001Based in Shizuoka, JP· patent location history

2003Patents assigned to KAWAI MUSICAL INSTR MFG CO (1)· patent assignee history

2003Based in Hamamatsu, JP· patent location history

2008Patents assigned to FUJITSU LTD (1)· patent assignee history

2008Based in Kawasaki, JP· patent location history

2021Patents assigned to MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (1)· patent assignee history

2021Based in Tokyo, JP· patent location history

2021Based in Mie, JP· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CATERPILLAR MITSUBISHI LTD	1	1992
FUJITSU LTD	1	2008
KAWAI MUSICAL INSTR MFG CO	1	2003
MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD	1	2021
OLYMPUS OPTICAL CO	1	1981

Locations