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Inventor

Gerardus H. M. Siebers

Inventor
Eindhoven, NL

Overview

2→
Patents
1987–1988
Patent span
Chemistry
Primary field (CPC C)

Patents· 2 as inventor

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

H01Jprimary
H01JElectric discharge tubes or discharge lamps50%
C04BLime, magnesia25%
C09KMaterials for miscellaneous applications, not provided for elsewhere25%
PatentTitleYear
4,727,283'Low-pressure mercury vapour discharge lamp'19884,699,774'Gas-tight sintered translucent aluminum oxide and method'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1988Patents assigned to PHILIPS CORP (2)· patent assignee history
1987Based in Roosendaal, NL· patent location history
1988Based in Eindhoven, NL· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
PHILIPS CORP21987–1988
Locations
LocationPatentsSpan
Eindhoven, NL11988
Roosendaal, NL11987