| Patent | Date |
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Copper alloys to be used as brazing filler metals
Grant 5,378,294 - Rissanen * January 3, 1 | 1995-01-03 |
Apparatus for providing two-way communication in underground facilities
Grant 5,345,473 - Berg September 6, 1 | 1994-09-06 |
Method and apparatus for mixing and separating two liquid phases while preventing aeration and emulsions using a mixer-settler
Grant 5,185,081 - Nyman , et al. February 9, 1 | 1993-02-09 |
Automatic charging member
Grant 5,151,006 - Marttila , et al. September 29, 1 | 1992-09-29 |
Metal detector
Grant 5,121,105 - Aittoniemi June 9, 1 | 1992-06-09 |
Method for the treatment and production of free-flowing WC-Ni-Co powders
Grant 5,102,452 - Taskinen , et al. April 7, 1 | 1992-04-07 |
Analyzer detector window and a method for manufacturing the same
Grant 5,090,046 - Friel February 18, 1 | 1992-02-18 |
Apparatus for creating a double loop flow
Grant 5,078,505 - Nyman , et al. January 7, 1 | 1992-01-07 |
Analyzer sealing member
Grant 5,064,204 - Jarvinen , et al. November 12, 1 | 1991-11-12 |
Improving the discrimination of an impulse technique metal detector by correlating responses inside and outside of a cut-off peak area
Grant 5,047,718 - Aittoniemi , et al. September 10, 1 | 1991-09-10 |
Method for cleaning the filter plates of a suction drier
Grant 5,039,347 - Hindstrom , et al. August 13, 1 | 1991-08-13 |
Smelting furnace and method for feeding material to be processed therein
Grant 4,995,051 - Hakulin , et al. February 19, 1 | 1991-02-19 |
Method for cooling a kiln furnace
Grant 4,973,245 - Monni November 27, 1 | 1990-11-27 |
Method for reducing nitric oxide emissions in exhaust gases from diesel engines
Grant 4,958,490 - Harjunpaa September 25, 1 | 1990-09-25 |
Method for treating waste materials
Grant 4,934,285 - Jormanainen , et al. June 19, 1 | 1990-06-19 |
Mould for billets
Grant 4,911,225 - Leppanen March 27, 1 | 1990-03-27 |
Calendar
Grant 4,902,042 - Rassi February 20, 1 | 1990-02-20 |
Method and apparatus for positioning sheet-like objects
Grant 4,894,129 - Leiponen , et al. January 16, 1 | 1990-01-16 |
Impulse induced eddy current type detector using plural measuring sequences in detecting metal objects
Grant 4,894,619 - Leinonen , et al. January 16, 1 | 1990-01-16 |
Method for drawing samples from material containing solid ingredients
Grant 4,876,902 - von Alfthan , et al. October 31, 1 | 1989-10-31 |
Method for manufacturing tubes
Grant 4,876,870 - Rantanen October 31, 1 | 1989-10-31 |
Voltammetric method of measuring
Grant 4,786,373 - Saloheimo , et al. November 22, 1 | 1988-11-22 |
Method for waste treatment
Grant 4,785,745 - Hanni , et al. November 22, 1 | 1988-11-22 |
Method for dispersing two phases in extraction and apparatus for realizing the method
Grant 4,786,187 - Nyman , et al. November 22, 1 | 1988-11-22 |
Method for dispersing two phases and for setting the dispersed phases
Grant 4,721,571 - Nyman , et al. January 26, 1 | 1988-01-26 |
Apparatus for batch preparation and feeding into the smelting process
Grant 4,708,640 - Honkaniemi , et al. November 24, 1 | 1987-11-24 |
Method for taking the radiation background into account in the determination of radiation intensities of analyzed samples
Grant 4,653,081 - Sipila , et al. March 24, 1 | 1987-03-24 |
Way to oxidize sludge with high solid matter content
Grant 4,648,973 - Hultholm , et al. March 10, 1 | 1987-03-10 |
Method for dispersing two phases in liquid-liquid extraction
Grant 4,628,391 - Nyman , et al. December 9, 1 | 1986-12-09 |
Flotation machine
Grant 4,624,777 - Kallioinen , et al. November 25, 1 | 1986-11-25 |
Repeating flotation machine
Grant 4,612,113 - Kallioinen September 16, 1 | 1986-09-16 |
Pulse field metal detector with spaced, dual coil transmitter and receiver systems
Grant 4,605,898 - Aittoniemi , et al. August 12, 1 | 1986-08-12 |
Method for processing sulphide concentrates and sulphide ores into raw material
Grant 4,599,108 - Hanniala July 8, 1 | 1986-07-08 |
Method for controlling and balancing the power in an electric furnace
Grant 4,580,272 - Honkaniemi , et al. April 1, 1 | 1986-04-01 |
Method for dispersing gas in a solid-containing liquid, and an apparatus for it
Grant 4,548,765 - Hultholm , et al. October 22, 1 | 1985-10-22 |
Method for producing blister copper
Grant 4,528,033 - Andersson July 9, 1 | 1985-07-09 |
Procedure for providing the vanes of the stator of a flotation machine with a cover and for fixing the cover
Grant 4,508,619 - Niitti , et al. April 2, 1 | 1985-04-02 |
Electric furnace dome
Grant 4,491,952 - Honkaniemi , et al. January 1, 1 | 1985-01-01 |
Method for forming a directional and controlled suspension spray of a pulverous material and a reaction gas
Grant 4,490,170 - Lilja , et al. December 25, 1 | 1984-12-25 |
Hydrometallurgical process for the recovery of valuable metals from sulfidic, silicate-containing raw materials
Grant 4,483,827 - Heimala November 20, 1 | 1984-11-20 |
Method and apparatus for the purification of gases which contain solid and gaseous impurities
Grant 4,469,493 - Tuovinen , et al. September 4, 1 | 1984-09-04 |
Apparatus for electrolytic polishing
Grant 4,431,501 - Leppanen February 14, 1 | 1984-02-14 |
Process for the separation of gold and silver from complex sulfide ores and concentrates
Grant 4,431,614 - Makipirtti , et al. February 14, 1 | 1984-02-14 |
Method of manufacturing a thin copper plate with flow conduits
Grant 4,412,373 - Kosonen , et al. November 1, 1 | 1983-11-01 |
Method and apparatus for the determination of the average particle size in a slurry
Grant 4,412,451 - Uusitalo , et al. November 1, 1 | 1983-11-01 |
Method and apparatus for the straightening and stiffening of starting sheets in electrolytic refining plants
Grant 4,411,146 - Sulasaari , et al. October 25, 1 | 1983-10-25 |
Copper wire for intrauterina contraceptive devices and a method for manufacturing the same
Grant 4,351,326 - Kosonen September 28, 1 | 1982-09-28 |
Process for the selective froth-flotation of phosphate and carbonate minerals from finely-divided phosphate-carbonate-silicate ores or concentrates
Grant 4,317,715 - Hintikka , et al. March 2, 1 | 1982-03-02 |
Apparatus for measuring the concentrations of elements in a material by the capture gamma method
Grant 4,278,885 - von Alfthan , et al. July 14, 1 | 1981-07-14 |
Immersion evaporator
Grant 4,278,494 - Lilja , et al. July 14, 1 | 1981-07-14 |
Electrolytic cell
Grant 4,273,642 - Seilo June 16, 1 | 1981-06-16 |
Process for the selective removal of impurities present in sulfidic complex ores, mixed ores or concentrates
Grant 4,242,124 - Makipirtti December 30, 1 | 1980-12-30 |
Apparatus for sulfatizing roasting of a finely-divided selenium-bearing raw material
Grant 4,228,133 - Lindroos , et al. October 14, 1 | 1980-10-14 |
Method of refining of melts by means of a pulverous solid material and/or a gas
Grant 4,211,553 - Honkaniemi , et al. July 8, 1 | 1980-07-08 |
Process for the recovery of cobalt from its impure, aqueous, in particular nickel-bearing, solutions and catalyst therefor
Grant 4,208,380 - Hamalainen , et al. June 17, 1 | 1980-06-17 |
Process for the refining of sulfidic complex and mixed ores or concentrates
Grant 4,169,725 - Makipirtti October 2, 1 | 1979-10-02 |
Process for selective removal of bismuth and antimony from an electrolyte, especially in electrolytic refining of copper
Grant 4,157,946 - Hyvarinen June 12, 1 | 1979-06-12 |
Roller screen
Grant 4,148,398 - Mustikka April 10, 1 | 1979-04-10 |
Procedure for producing a suspension of a powdery substance and a reaction gas
Grant 4,147,535 - Lilja , et al. April 3, 1 | 1979-04-03 |
Process and device for suspension smelting of finely divided oxide and/or sulfide ores and concentrates, especially copper and/or nickel concentrates rich in iron
Grant 4,139,371 - Makipirtti , et al. February 13, 1 | 1979-02-13 |
Process for producing pulverous selenium from raw selenium
Grant 4,127,235 - Klaile , et al. November 28, 1 | 1978-11-28 |
Flotation cell with eccentric rotor and stator
Grant 4,075,089 - Saari , et al. February 21, 1 | 1978-02-21 |
Process for producing raw copper continuously in one stage from unrefined sulfidic copper concentrate or ore
Grant 4,030,915 - Aaltonen , et al. June 21, 1 | 1977-06-21 |
In-situ pH measurement of organic-continuous solvent extraction processes
Grant 4,011,297 - Nyman , et al. March 8, 1 | 1977-03-08 |
Process for fining carbonaceous alloys of iron, nickel and/or cobalt
Grant 4,006,013 - Makipirtti , et al. February 1, 1 | 1977-02-01 |
System for arranging the operations and connections between a computer linked to a process and a control station connected to the computer
Grant 3,987,351 - Appelberg , et al. October 19, 1 | 1976-10-19 |
Intrauterine contraceptive device
Grant 3,937,217 - Kosonen February 10, 1 | 1976-02-10 |
Process for suspension smelting of finely-divided oxide and/or sulfide ores and concentrates
Grant 3,900,310 - Kaasila , et al. August 19, 1 | 1975-08-19 |
Method Of Producing Iron-poor Nickel Sulphide Matte From Sulphidic Nickel Concentrates In Suspension Smelting Thereof
Grant 3,754,891 - Bryk , et al. August 28, 1 | 1973-08-28 |
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