Assignee
KEMIRA OY
FI·50 granted patents·1,012 citations·filing 1974–1996
Top patents by PatentIndex Score
50 records- 0192US4732708AMethod for converting vegetable material into chemicalsKEMIRA OY·Filed 1986·Granted Mar 22, 1988·65 cites·10 claims
- 0290US4375989ACoated titanium dioxide pigment and a process for the production of the sameKEMIRA OY·Filed 1981·Granted Mar 8, 1983·97 cites·7 claims
- 0388US4737491AWood preservativeKEMIRA OY·Filed 1985·Granted Apr 12, 1988·87 cites·5 claims
- 0480US5482529AFertilizing preparation improving the extraction of phosphorus for plantsKEMIRA OY·Filed 1994·Granted Jan 9, 1996·60 cites·24 claims
- 0580USD253197SHelmetKEMIRA OY·Filed 1977·Granted Oct 23, 1979·16 cites·1 claims
- 0679US5445717AMethod for simultaneous production of alkali metal or ammonium peroxodisulphate salts and alkali metal hydroxideKEMIRA OY·Filed 1994·Granted Aug 29, 1995·41 cites·12 claims
- 0775US3981737AProcess for producing lightproof titanium dioxide pigmentKEMIRA OY·Filed 1974·Granted Sep 21, 1976·27 cites·10 claims
- 0873US5443811AMethod of preparing titanium dioxideKEMIRA OY·Filed 1993·Granted Aug 22, 1995·33 cites·13 claims
- 0972US5435985AHydrogenation catalyst for use in a hydrogen peroxide process, and method for the preparation thereofKEMIRA OY·Filed 1994·Granted Jul 25, 1995·17 cites·10 claims
- 1070US5165995AProcess for coating titanium dioxide pigmentsKEMIRA OY·Filed 1990·Granted Nov 24, 1992·35 cites·14 claims
- 1169US5695609AProcess for producing paperKEMIRA OY·Filed 1996·Granted Dec 9, 1997·40 cites·16 claims
- 1269US5071634AProcess for the preparation of hydrogen peroxide (i)KEMIRA OY·Filed 1990·Granted Dec 10, 1991·31 cites·5 claims
- 1369US4756801APaper-making method and a combination of ingredients to be used in itKEMIRA OY·Filed 1986·Granted Jul 12, 1988·30 cites·1 claims
- 1469US4755743AMethod and apparatus for measuring the moisture content or dry-matter content of materials using a microwave dielectric waveguideKEMIRA OY·Filed 1985·Granted Jul 5, 1988·29 cites·22 claims
- 1566US4164582ASynergistic fungicidal compositionsKEMIRA OY·Filed 1977·Granted Aug 14, 1979·8 cites·2 claims
- 1665US4595589AFungistatic methodKEMIRA OY·Filed 1983·Granted Jun 17, 1986·10 cites·14 claims
- 1760US4008256AEsterification of furfuryl alcohol and its derivatesKEMIRA OY·Filed 1975·Granted Feb 15, 1977·4 cites·7 claims
- 1856US4883539ACoated silicate particlesKEMIRA OY·Filed 1988·Granted Nov 28, 1989·10 cites·5 claims
- 1955US4057057ABreathing mask, especially a half mask or a full mask provided with an inner maskKEMIRA OY·Filed 1975·Granted Nov 8, 1977·18 cites·4 claims
- 2054US5061317AColored nacreous pigment and a method for its preparationKEMIRA OY·Filed 1989·Granted Oct 29, 1991·12 cites·15 claims
- 2153US5612277ACatalyst and method for manufacturing the sameKEMIRA OY·Filed 1993·Granted Mar 18, 1997·17 cites·16 claims
- 2253US5076849ATransparent metal oxide pigment and method for its preparationKEMIRA OY·Filed 1989·Granted Dec 31, 1991·8 cites·13 claims
- 2353US5055275AReinforced catalytic unit intended for purifying exhaust gasesKEMIRA OY·Filed 1988·Granted Oct 8, 1991·14 cites·6 claims
- 2452US4163045AProcess for producing hydrogen fluoride from an aqueous solution of hydrogen fluoride and sulfuric acidKEMIRA OY·Filed 1977·Granted Jul 31, 1979·12 cites·2 claims
- 2550US5451243AControlled-release fertilizer composition in the form of a pasteKEMIRA OY·Filed 1992·Granted Sep 19, 1995·8 cites·11 claims
- 2650US4210747AProcess for the preparation of viscoseKEMIRA OY·Filed 1978·Granted Jul 1, 1980·7 cites·2 claims
- 2749US4905687AMethod and apparatus for regulating air supplied to a gas maskKEMIRA OY·Filed 1989·Granted Mar 6, 1990·50 cites·9 claims
- 2849US4741082AMethod for manufacturing and reinforcing a catalytic unit intended for purifying exhaust gasesKEMIRA OY·Filed 1987·Granted May 3, 1988·12 cites·6 claims
- 2948US5580533ACatalyst and process for purifying diesel exhaust gasesKEMIRA OY·Filed 1993·Granted Dec 3, 1996·14 cites·7 claims
- 3048US4756896AMethod of preparing siliconKEMIRA OY·Filed 1987·Granted Jul 12, 1988·13 cites·19 claims
- 3148US3983222ARemoving nitrates with an organic amine salt and ion exchangeKEMIRA OY·Filed 1974·Granted Sep 28, 1976·9 cites·11 claims
- 3247US5764203ABreathing mask with a display unitKEMIRA OY·Filed 1996·Granted Jun 9, 1998·28 cites·17 claims
- 3347US5410757AFace shieldKEMIRA OY·Filed 1994·Granted May 2, 1995·60 cites·15 claims
- 3445US4662929AMethod for recovering nutrients from the flue gases of a fertilizer plantKEMIRA OY·Filed 1985·Granted May 5, 1987·11 cites·9 claims
- 3542US5196179AProcess for the production of hydrogen peroxideKEMIRA OY·Filed 1990·Granted Mar 23, 1993·8 cites·12 claims
- 3637US5603911APreparing a crystalline, stable sodium percarbonateKEMIRA OY·Filed 1993·Granted Feb 18, 1997·10 cites·14 claims
- 3736US4687571AProcess for the froth-flotation of a phosphate mineral from a phosphate-carbonate oreKEMIRA OY·Filed 1985·Granted Aug 18, 1987·6 cites·8 claims
- 3835US5534476AUse of a super alloy as a substrate for catalystsKEMIRA OY·Filed 1994·Granted Jul 9, 1996·7 cites·6 claims
- 3932US5178847AProcess for producing ceramic raw materialsKEMIRA OY·Filed 1989·Granted Jan 12, 1993·6 cites·18 claims
- 4031US5583087AMethod for impregnating catalyst support with platinumKEMIRA OY·Filed 1993·Granted Dec 10, 1996·2 cites·9 claims
- 4130US4073635AProcess for producing a slurry suitable for the manufacture of a mixed fertilizer containing nitrogen plus phosphorusKEMIRA OY·Filed 1976·Granted Feb 14, 1978·4 cites·10 claims
- 4229US5217629AProcedure for cleaning filter used in production of hydrogen peroxide from anthraquinoneKEMIRA OY·Filed 1991·Granted Jun 8, 1993·7 cites·19 claims
- 4328US5114701AMethod for producing hydrogen peroxide and solvent system for use in the hydrogen peroxide production processKEMIRA OY·Filed 1990·Granted May 19, 1992·1 cites·8 claims
- 4428US4755285AProcess for the froth-flotation of a phosphate mineral, and a reagent intended for use in the processKEMIRA OY·Filed 1986·Granted Jul 5, 1988·4 cites·3 claims
- 4528US4045453AMethod for producing 5-nitro-2-furfuryl acetateKEMIRA OY·Filed 1975·Granted Aug 30, 1977·0 cites·5 claims
- 4627US4775463AProcess for the flotation of phosphate mineral and an agent to be used in the flotationKEMIRA OY·Filed 1987·Granted Oct 4, 1988·5 cites·8 claims
- 4727US4349660AProcess for the production of air drying modified amino resinKEMIRA OY·Filed 1980·Granted Sep 14, 1982·7 cites·8 claims
- 4826US5443808AMethod of producing alkali metal phosphateKEMIRA OY·Filed 1994·Granted Aug 22, 1995·4 cites·15 claims
- 4920US5611928AProcess for treating waste waterKEMIRA OY·Filed 1993·Granted Mar 18, 1997·4 cites·8 claims
- 5020US5077027AMethod for producing silicon halides by reducing silicon tetrhalides under a plasma torchKEMIRA OY·Filed 1990·Granted Dec 31, 1991·4 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when KEMIRA OY files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →