Johan Gullichsen — 21 Patents | Patent Leaderboard

Johan Gullichsen has been granted 21 US patents. The first was granted in 1980 and the most recent in August 2002. Johan Gullichsen ranks #201,324 of 4,157,543 US inventors in our database (top 4.8%). Patent records list Johan Gullichsen in Helsinki, FI.

Issued Patents All Time

Showing 1–21 of 21 patents

Patent #	Title	Co-Inventors	Date
6436232	Procedure for adding a filler into a pulp based on cellulose fibers	Petri Silenius, Markku Leskelä, Esa Halinen	2002-08-20
5813758	Concentric ring fluidizing mixer	Thomas R. Delcourt, Ronald Bain, C. Bertil Stromberg	1998-09-29
5549788	Minimal effluents discharge pulp mill with chemical recovery	Tuomo Nykanen, Brian F. Greenwood, Erkki Kiiskila, Esko Mattelmaki, Joseph R. Phillips +4 more	1996-08-27
5547543	Apparatus for minimizing effluent discharges and recovering chemicals in a pulp mill	Tuomo Nykanen, Brian F. Greenwood, Erkki Kiiskila, Esko Mattelmaki, Joseph R. Phillips +4 more	1996-08-20
5518583	Zero discharge mill distillation, salt recovery, and water management	Tuomo Nykanen, Brian F. Greenwood, Erkki Kiiskila, Esko Mattelmaki, Joseph R. Phillips +4 more	1996-05-21
5380402	Reducing pulp mill liquid discharge	Rolf Ryham, Tuomo Nykanen, Brian F. Greenwood, Erkki Kiiskila, Esko Mattelmaki +4 more	1995-01-10
5374333	Method for minimizing pulp mill effluents	Tuomo Nykanen, Brian F. Greenwood, Erkki Kiiskila, Esko Mattelmaki, Joseph R. Phillips +4 more	1994-12-20
5047118	Method for decreasing energy consumption during refining of fiber material at a reduced grinding frequency while maintaining capacity	—	1991-09-10
4986480	Method and apparatus for feeding a conical refiner	Bengt Nilsson, Ronny Hoglund	1991-01-22
4854819	Method and apparatus for pumping fibre suspensions	—	1989-08-08
4842688	Method of removing macromolecular organic dissolved and colloidal material from wood processing industry effluents	Pertti Hynninen	1989-06-27
4826398	Medium consistency pump with self-feeding	—	1989-05-02
4812207	Method of removing lignin from bleach plant effluents	Pertti Hynninen	1989-03-14
4780053	Method and apparatus for pumping fiber suspensions	—	1988-10-25
4776758	Combined fluidizing and vacuum pump	—	1988-10-11
4754935	Method and apparatus for refining fibrous material	—	1988-07-05
4594152	Method and an apparatus for treating fibre suspensions	—	1986-06-10
4435193	Controlling operation of a centrifugal pump	Esko Härkönen, Toivo Niskanen, Jaakko Kujala, Voitto Reponen	1984-03-06
4410337	Method and an apparatus for separating a gas from a fibre suspension	Jaakko Kujala, Toivo Niskanen, Voitto Reponen, Esko Härkönen	1983-10-18
4362536	Pulp degassing	—	1982-12-07
4222818	Method for treatment of lignocellulosic material with chlorine	Frey Sundman	1980-09-16

Johan Gullichsen — 21 Patents

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