Inventor · disambiguated record
Nils-Erik Virkola
Also filed as: VIRKOLA NILS E · VIRKOLA NILS-ERIK
8 granted patents·128 citations·filing 1981–1990
88Inventor score
Top patents by PatentIndex Score
8 records- 0190US4971658AMethod of intensifying the washing of a fiber suspensionAHLSTROEM OY·Filed 1989·Granted Nov 20, 1990·44 cites·8 claims
- 0268US5139617AProcess for the production of a hemicellulose hydrolysate and special high alpha cellulose pulpSUOMEN SOKERI OY·Filed 1990·Granted Aug 18, 1992·19 cites·10 claims
- 0366US4929307AMethod of decreasing black liquor viscosityAHLSTROEM OY·Filed 1989·Granted May 29, 1990·25 cites·7 claims
- 0453US4384921AAlkaline sulfite pulping process with sodium aluminate and anthraquinoneAHLSTROEM OY·Filed 1981·Granted May 24, 1983·9 cites·2 claims
- 0545US4895618AMethod of controlling alkaline pulping processAFORA OY·Filed 1989·Granted Jan 23, 1990·7 cites·1 claims
- 0642US4842689AMethod for controlling sulphite pulping and hydrolytic processes by means of rapid furfural analyzerADVANCED FOREST AUTOMATION AB·Filed 1987·Granted Jun 27, 1989·7 cites·4 claims
- 0741US4889593AMethod of determining rapidly the concentration of the total sulphur dioxide and the lignosulphonate present in sulphite pulping process liquorsADVANCED FOREST AUTOMATION AB·Filed 1988·Granted Dec 26, 1989·9 cites·3 claims
- 0838US4718979AMethod for rapid determination of the contents of lignin, monosaccharides and organic acids in the process solutions of sulfite pulpingADVANCED FOREST AUTOMATION AB·Filed 1986·Granted Jan 12, 1988·8 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →