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Inventor

Ryuzo Harada

Inventor
Yokohama, JP

Overview

3→
Patents
1981–1990
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 3 as inventor

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

F02Pprimary
F02PIgnition, other than compression ignition, for internal-combustion engines27%
B23DPlaning9%
B23QDetails, components, or accessories for machine tools, e.g. arrangements for copying or controlling9%
B27BSaws for wood or similar material9%
F01MLubricating of machines or engines in general9%
F02BInternal-combustion piston engines9%
F02NStarting of combustion engines9%
F16NLubricating9%
G07CTime or attendance registers9%
PatentTitleYear
4,917,060'Ignition device for starting an internal combustion engine'19904,829,579'Apparatus for confirming and reporting the operating conditions of a chain saw or the like'19894,305,371'Contactless ignition circuit for internal combustion engines'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1989Patents assigned to OPPAMA KOGYO KK (2)· patent assignee history
1981Based in Yokosuka, JP· patent location history
1989Based in Kanagawa, JP· patent location history
1990Patents assigned to KIORITZ CORP (1)· patent assignee history
1990Based in Yokohama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
OPPAMA KOGYO KK21981–1989
KIORITZ CORP11990
Locations
LocationPatentsSpan
Yokohama, JP11990
Kanagawa, JP11989
Yokosuka, JP11981