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Inventor

Tamotsu Ishikawa

Inventor
Shiga, JP

Overview

3→
Patents
1986–2014
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

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

F25Bprimary
F25BRefrigeration machines, plants or systems17%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them17%
H01JElectric discharge tubes or discharge lamps17%
H10DInorganic electric semiconductor devices17%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1017%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
PatentTitleYear
8,704,436'High-pressure discharge lamp and projector having the high-pressure lamp'20145,241,829'Method of operating heat pump'19934,567,646'Method for fabricating a dielectric isolated integrated circuit device'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986Patents assigned to FUJITSU LTD (1)· patent assignee history
1986Based in Yokohama, JP· patent location history
1993Patents assigned to NISHIYODO AIR CONDITIONER (1)· patent assignee history
1993Patents assigned to OSAKA PREFECTURE GOVERNMENT (1)· patent assignee history
1993Based in Kyoto Prefecture, JP· patent location history
2014Patents assigned to PANASONIC CORP (1)· patent assignee history
2014Based in Shiga, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
FUJITSU LTD11986
NISHIYODO AIR CONDITIONER11993
OSAKA PREFECTURE GOVERNMENT11993
PANASONIC CORP12014
Locations
LocationPatentsSpan
Shiga, JP12014
Kyoto Prefecture, JP11993
Yokohama, JP11986