LexDanaLexDanabeta
Inventor

Kenji Maruta

Inventor
Kumagaya, JP

Overview

6→
Patents
1989–1992
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 6 as inventor

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

F02Bprimary
F02BInternal-combustion piston engines23%
F23QIgnition23%
B21BRolling of metal15%
C22CAlloys15%
Y10TTechnical subjects covered by former us classification15%
C04BLime, magnesia8%
PatentTitleYear
5,108,659'Sintered body of conductive sialon and heating element made thereof'19925,106,576'Method of producing a wear-resistant compound roll'19925,053,284'Wear-resistant compound roll'19914,929,813'Glow plug for diesel engine'19904,914,274'Diesel engine glow plug having SiALON heater'19904,810,853'Glow plug for diesel engines'1989

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1989–1992Patents assigned to HITACHI METALS LTD (6)· patent assignee history
1989–1990Patents assigned to JIDOSHA KIKI CO (3)· patent assignee history
1989–1992Based in Kumagaya, JP· patent location history
1990Based in Saitama, JP· patent location history
1991–1992Based in Kitakyusyu, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI METALS LTD61989–1992
JIDOSHA KIKI CO31989–1990
Locations
LocationPatentsSpan
Kumagaya, JP21989–1992
Kitakyusyu, JP21991–1992
Saitama, JP21990