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ELKEM SPIGERVERKET AS

Overview
  • Total Patents
    838
About

ELKEM SPIGERVERKET AS has a total of 838 patent applications. Its first patent ever was published in 1964. It filed its patents most often in Norway, Germany and Canada. Its main competitors in its focus markets thermal processes, materials and metallurgy and machines are COWLES ALFRED HUTCHINSON, HATCH LTD and BRICMONT INC.

Patent filings per year

Chart showing ELKEM SPIGERVERKET ASs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Krogsrud Harald 65
#2 Krogsrud H 54
#3 Hyggen Egil 26
#4 Skreien N 14
#5 Kongsgaarden Ole Andreas 13
#6 Kongsgaarden Ole A 12
#7 Gjelsvik Norvald 12
#8 Piene K 11
#9 Saethre A 11
#10 Hyggen E 10

Latest patents

Publication Filing date Title
DK262882A Procedure for cleaning gas bears and gas filters in a continuous measurement of co 2 and o2 contents in exhaust gas
CA1163405A Means for splitting carcasses
PT72352A Process and dispositve for treating with a fluid a solid gravel-like material
JPS5745812A Apparatus for adjusting length of leg of table , bench , chair , rack and support
NL8004916A Chair leg length adjustment mechanism - comprises disc rotating on horizontal axis at lower end (NO 23.3.81)
NO802386L DEVICE FOR RE-ROLLABLE HOLE CARD CARDS
NL8004364A Apparatus for splitting carcasses.
GB2046693A System for mooring a vessel
CA1089900A Matte smelting
DK101780A Procedure for reducing deposits by steel casting
DK32280A Procedure for the exclusion of silicates with acid
DK32180A Procedure for the preparation of pure aluminum oxyde from solutions containing dissolved aluminum ions and iron ions
DK32380A Procedure for the deposit of a pure aluminum chloride from solutions containing aluminum and magnium ions
DK28880A Lamble system suitable for manufacture of door walls and like
DK28780A Frame for doors and windows
DK28680A Device for fixing frames for doors and windows
JPS56102531A Method and apparatus for producing aluminum by carbon heat reduction of alumina
GB2067224A Carbothermic production of aluminium
DE2923247A1 Crane or winch starter cylinder - has cylinder which fits between main parts, pressing rotatable part against drum to come in contact with chain wheel
ZM4279A1 Apparatus for the supple of a charge to a covered electric smelting furnace