Assignee
EKA NOBEL AB
SE·102 granted patents·2,932 citations·filing 1986–1999
Top patents by PatentIndex Score
102 records- 0197US5368833ASilica sols having high surface areaEKA NOBEL AB·Filed 1990·Granted Nov 29, 1994·222 cites·6 claims
- 0296US5603805ASilica sols and use of the solsEKA NOBEL AB·Filed 1993·Granted Feb 18, 1997·128 cites·17 claims
- 0396US5127994AProcess for the production of paperEKA NOBEL AB·Filed 1989·Granted Jul 7, 1992·133 cites·25 claims
- 0495US5091166AProcess for the production of chlorine dioxideEKA NOBEL AB·Filed 1990·Granted Feb 25, 1992·68 cites·11 claims
- 0593US5091167AProcess for the production of chlorine dioxideEKA NOBEL AB·Filed 1990·Granted Feb 25, 1992·69 cites·9 claims
- 0692US6398908B1Process for acid bleaching of lignocellulose-containing pulp with a magnesium compoundEKA NOBEL AB·Filed 1996·Granted Jun 4, 2002·60 cites·9 claims
- 0791US5607552AAqueous suspensions of colloidal particles, preparation and use of the suspensionsEKA NOBEL AB·Filed 1993·Granted Mar 4, 1997·60 cites·18 claims
- 0891US5447604ASilica sols, a process for the production of silica sols and use of the solsEKA NOBEL AB·Filed 1990·Granted Sep 5, 1995·102 cites·14 claims
- 0988US5925588AProduction of hydrogen peroxideEKA NOBEL AB·Filed 1998·Granted Jul 20, 1999·60 cites·8 claims
- 1088US5423959AProcess and apparatus for the production of sulphuric acid and alkali metal hydroxideEKA NOBEL AB·Filed 1994·Granted Jun 13, 1995·53 cites·17 claims
- 1188US5374335ASized paper, process for producing same and use thereofEKA NOBEL AB·Filed 1993·Granted Dec 20, 1994·83 cites·18 claims
- 1288US4961825APapermaking processEKA NOBEL AB·Filed 1989·Granted Oct 9, 1990·83 cites·13 claims
- 1387US4980025APapermaking processEKA NOBEL AB·Filed 1989·Granted Dec 25, 1990·92 cites·11 claims
- 1486US5785812AProcess for treating oxygen delignified pulp using an organic peracid or salt, complexing agent and peroxide bleach sequenceEKA NOBEL AB·Filed 1993·Granted Jul 28, 1998·39 cites·10 claims
- 1585US6007678AProcess for delignification of lignocellulose-containing pulp with an organic peracid or salts thereofEKA NOBEL AB·Filed 1998·Granted Dec 28, 1999·38 cites·10 claims
- 1685US5846898AProduction of hydrogen peroxideEKA NOBEL AB·Filed 1997·Granted Dec 8, 1998·49 cites·3 claims
- 1785US5277764AProcess for the production of cellulose fibre containing products in sheet or web formEKA NOBEL AB·Filed 1991·Granted Jan 11, 1994·81 cites·12 claims
- 1884US5227031AProcess for the production of chlorine dioxideEKA NOBEL AB·Filed 1991·Granted Jul 13, 1993·47 cites·10 claims
- 1984US4946557AProcess for the production of paperEKA NOBEL AB·Filed 1989·Granted Aug 7, 1990·48 cites·7 claims
- 2083US6277782B1Chiral adsorbents and preparation thereof as well as compounds on which the adsorbents are based and preparation of these compoundsEKA NOBEL AB·Filed 1993·Granted Aug 21, 2001·21 cites·20 claims
- 2183US5643414ASilica sols in papermakingEKA NOBEL AB·Filed 1994·Granted Jul 1, 1997·53 cites·15 claims
- 2283US4961918AProcess for production of chlorine dioxideEKA NOBEL AB·Filed 1989·Granted Oct 9, 1990·27 cites·10 claims
- 2382US5376350APlug flow process for the production of chlorine dioxideEKA NOBEL AB·Filed 1992·Granted Dec 27, 1994·36 cites·17 claims
- 2482US5292406AProcess for electrolytic production of alkali metal chlorate and auxiliary chemicalsEKA NOBEL AB·Filed 1992·Granted Mar 8, 1994·50 cites·11 claims
- 2582US5256386AMethod for preparation of silica particlesEKA NOBEL AB·Filed 1990·Granted Oct 26, 1993·61 cites·12 claims
- 2681US4950627ACeramic coating on metalEKA NOBEL AB·Filed 1989·Granted Aug 21, 1990·50 cites·7 claims
- 2779US5680320AMethod of quantifying performance chemicals in pulp and paperEKA NOBEL AB·Filed 1995·Granted Oct 21, 1997·54 cites·15 claims
- 2879US4964954AProcess for the production of paperEKA NOBEL AB·Filed 1988·Granted Oct 23, 1990·41 cites·10 claims
- 2978US5063043AProcess in the production of hydrogen peroxideEKA NOBEL AB·Filed 1990·Granted Nov 5, 1991·43 cites·11 claims
- 3077US5552519ARosin ester derivative as surfactantsEKA NOBEL AB·Filed 1993·Granted Sep 3, 1996·58 cites·14 claims
- 3177US4770868AProcess for production of chlorine dioxideEKA NOBEL AB·Filed 1987·Granted Sep 13, 1988·25 cites·10 claims
- 3274US5419818AProcess for the production of alkali metal chlorateEKA NOBEL AB·Filed 1994·Granted May 30, 1995·25 cites·19 claims
- 3373US5344633AAlkali metal silicate composition with potassium compound additiveEKA NOBEL AB·Filed 1993·Granted Sep 6, 1994·36 cites·7 claims
- 3473US5313911AMethod for controlling aquatic parasitesEKA NOBEL AB·Filed 1992·Granted May 24, 1994·26 cites·9 claims
- 3573US4938943AProcess for production of chlorine dioxideEKA NOBEL AB·Filed 1989·Granted Jul 3, 1990·21 cites·7 claims
- 3672US5638284AMethod of quantifying the wet strength of paperEKA NOBEL AB·Filed 1995·Granted Jun 10, 1997·43 cites·19 claims
- 3771US4755259AProcess for papermakingEKA NOBEL AB·Filed 1986·Granted Jul 5, 1988·32 cites·13 claims
- 3870US5680321AMethod of quantifying the properties of paperEKA NOBEL AB·Filed 1995·Granted Oct 21, 1997·35 cites·28 claims
- 3969US4978517AProcess for the production of chlorine dioxideEKA NOBEL AB·Filed 1989·Granted Dec 18, 1990·20 cites·7 claims
- 4067US5545389AProcess for the production of chlorine dioxideEKA NOBEL AB·Filed 1994·Granted Aug 13, 1996·17 cites·18 claims
- 4166US5502218AProcess for the production of ketene dimersEKA NOBEL AB·Filed 1994·Granted Mar 26, 1996·16 cites·18 claims
- 4265US5496440AProcess for the manufacture of paperEKA NOBEL AB·Filed 1992·Granted Mar 5, 1996·32 cites·13 claims
- 4364US5000791AProcess for the preparation of an acid-resistant coating on filler particlesEKA NOBEL AB·Filed 1989·Granted Mar 19, 1991·17 cites·6 claims
- 4464US4919755AProcess for bleachingEKA NOBEL AB·Filed 1988·Granted Apr 24, 1990·18 cites·16 claims
- 4563US5658429AProcess for bleaching of lignocellulose-containing pulp using a chelating agent prior to a peroxide-ozone-peroxide sequenceEKA NOBEL AB·Filed 1994·Granted Aug 19, 1997·15 cites·12 claims
- 4663US5512135AProcess for the production of paperEKA NOBEL AB·Filed 1992·Granted Apr 30, 1996·30 cites·12 claims
- 4761US5674466AMethod of producing chlorine dioxideEKA NOBEL AB·Filed 1996·Granted Oct 7, 1997·19 cites·10 claims
- 4861US4800074AProcess for the production of hydrogen peroxideEKA NOBEL AB·Filed 1988·Granted Jan 24, 1989·11 cites·6 claims
- 4961US4800073AProcess for the production of hydrogen peroxideEKA NOBEL AB·Filed 1988·Granted Jan 24, 1989·11 cites·4 claims
- 5060US5338528AAlkali metal silicate composition with sodium carbonate additiveEKA NOBEL AB·Filed 1993·Granted Aug 16, 1994·19 cites·12 claims
Showing the top 50 of 102 patent records by PatentIndex Score.
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