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Inventor

Toyohiko Kumada

Inventor
Himeji, JP

Overview

17→
Patents
1988–2013
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.

H01Jprimary
H01JElectric discharge tubes or discharge lamps94%
G03GElectrography6%
PatentTitleYear
8,354,792'Fused joint structure in a lamp tube and forming method therefor'20138,350,476'Short arc type discharge lamp'20138,217,576'High pressure discharge lamp'20128,072,145'Extra high pressure mercury lamp with each electrode held by a sealing portion'20117,999,475'Short arc type discharge lamp'20117,898,180'High pressure discharge lamp'20117,656,093'Discharge lamp and metal foil for a discharge lamp'20106,940,217'Short arc ultra-high pressure discharge lamp'20056,923,700'Short-arc, ultra-high-pressure discharge lamp and method of manufacture'20056,911,775'Short-arc, ultra-high pressure discharge lamp'20056,861,806'Super-high pressure discharge lamp of the short arc type'20056,787,996'Lamp seal using functionally gradient material'20046,762,557'Super-high pressure discharge lamp of the short arc type'20046,713,957'Super-high pressure discharge lamp of the short arc type'20046,375,533'Electricity lead-in body for bulb and method for manufacturing the same'20025,962,977'Low pressure discharge lamp having electrodes with a lithium-containing electrode emission material'19994,768,057'Flash fixing apparatus'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–2013Patents assigned to USHIO ELECTRIC INC (17)· patent assignee history
1988Based in Tatebayashi, JP· patent location history
1999–2012Based in Himeji, JP· patent location history
2011–2013Patents assigned to KUMADA TOYOHIKO (4)· patent assignee history
2011Patents assigned to KASAISHI SHUKI (1)· patent assignee history
2011–2013Based in Hyogo, JP· patent location history
2012–2013Patents assigned to NAGAMACHI NOBUHIRO (3)· patent assignee history
2012–2013Patents assigned to ISHIKAWA HIROHISA (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
USHIO ELECTRIC INC171988–2013
KUMADA TOYOHIKOself42011–2013
NAGAMACHI NOBUHIRO32012–2013
ISHIKAWA HIROHISA22012–2013
KASAISHI SHUKI12011
Locations
LocationPatentsSpan
Himeji, JP121999–2012
Hyogo, JP42011–2013
Tatebayashi, JP11988