EP0971019B1 - Procédé pour le nettoyage de la vaisselle - Google Patents

Procédé pour le nettoyage de la vaisselle Download PDF

Info

Publication number
EP0971019B1
EP0971019B1 EP98114776A EP98114776A EP0971019B1 EP 0971019 B1 EP0971019 B1 EP 0971019B1 EP 98114776 A EP98114776 A EP 98114776A EP 98114776 A EP98114776 A EP 98114776A EP 0971019 B1 EP0971019 B1 EP 0971019B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
group
oxidizing agent
amphoteric surfactant
cleaning liquor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP98114776A
Other languages
German (de)
English (en)
Other versions
EP0971019A1 (fr
Inventor
Walter Schwitzer
Michel Ruedi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ecolab GmbH and Co OHG
Original Assignee
Henkel Ecolab GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7869489&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0971019(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Henkel Ecolab GmbH and Co KG filed Critical Henkel Ecolab GmbH and Co KG
Publication of EP0971019A1 publication Critical patent/EP0971019A1/fr
Application granted granted Critical
Publication of EP0971019B1 publication Critical patent/EP0971019B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3947—Liquid compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/90—Betaines
    • C11D2111/18—

Definitions

  • the present invention relates to the use of a cleaning liquor containing an amphoteric surfactant and an oxidizing agent having active oxygen, at the cleaning of dishes, a method of cleaning dishes, in particular of glasses, primarily in the commercial sector and here again in the appropriate dishwashing machines should be used, as well as a appropriate cleaning agent.
  • the cleaned dishes are particularly liable in the commercial sector the glasses, even after drying, a peculiar smell that is often perceived as disturbing.
  • the causes of this smell are largely unknown, but there are assumptions that the reuse of the Liquors and the use of treated or recovered water to an accumulation of disruptive components in the cleaning liquors leads that adhere to the ceramic surfaces, especially on glasses stay.
  • the adhering smell is partly lost even when it is stored open Dishes are very slow and are particularly annoying with glasses, if it is immediately used again for drinks that have only a weak intrinsic smell, such as Mineral water and wine.
  • WO-A-97/31092 disinfectants are described, the one Peroxygen bleach, a betaine or sulfobetaine surfactant and one contain antimicrobial compound.
  • Such formulations are used for Disinfection and cleaning of hard surfaces such as glass and Dishes.
  • WO-A-97/31093 relates to disinfectants containing a peroxygen bleach, an amphoteric surfactant, glutaraldehyde and an antimicrobial effective oil. Such formulations are also used for disinfection and Cleaning hard surfaces such as glass and dishes, for example.
  • EP-A-0 670 364 describes liquid bleaching agent formulations which, in addition to Hydrogen peroxide contain a surfactant and a bleach activator.
  • surfactants nonionic, anionic or amphoteric surfactants are particularly suitable.
  • EP-A-0 805 198 relates to cleaning agents containing an amine oxide and a Betaine or a sulfobetaine surfactant.
  • Other preferred ingredients are Solvents, antimicrobial compounds and peroxygen bleach. Such formulations are used to clean hard surfaces.
  • the present invention was based on the object, the previously known Process for cleaning dishes, especially glasses, with a view to to significantly improve the appearance of unpleasant smells and that Avoid the occurrence of such odors if possible.
  • the present invention relates to the use of a Cleaning liquor containing an amphoteric surfactant and an active oxygen oxidizing agent, to reduce or avoid unpleasant smells when cleaning dishes.
  • the present invention relates to a method for cleaning Tableware, in which the dishes are treated with a cleaning liquor, the one contains amphoteric surfactant and an oxidizing agent having active oxygen, then rinsed and then dried, characterized in that Ampotensid and oxidizing agent separately for the preparation of the cleaning liquor is used. Otherwise, the new procedure largely corresponds to that conventional machine dishwashing methods, such as those in particular are common in the commercial sector.
  • amphoteric surfactants used in the cleaning liquor of the process according to the invention are compounds which, in addition to a long-chain alkyl radical, have a tertiary amine function or a quaternary ammonium function and one or more anionic groups in the molecule, the anionic groups preferably being carboxylate or sulfonate groups.
  • the amphoteric surfactants are distinguished by the fact that they are cationic in the acidic range, while they are present in the alkaline range as betaine or as an anionic compound.
  • amphoteric surfactants which have one or more carboxyl or carboxylate groups and from these in turn those surfactants which correspond to the formula I described below.
  • the second essential component of the cleaning liquor used it is an oxidizing agent based on oxygen, that is one peroxidic compound.
  • Inorganic peroxy compounds are preferred, in principle, however, organic peroxy compounds, in particular peroxycarboxylic acids, are also such as peracetic acid.
  • inorganic Peroxy compounds come, for example, salts of peroxysulfuric acids, but especially hydrogen peroxide and such compounds into consideration Release hydrogen peroxide in aqueous solution.
  • Examples of such hydrogen peroxide releasing compounds are in particular the perborates all sodium perborate monohydrate and sodium perborate tetrahydrate and addition compounds of hydrogen peroxide to inorganic compounds, in particular the addition compound of sodium carbonate and hydrogen peroxide, which is also referred to as percarbonate, and optionally also addition compounds of hydrogen peroxide to organic compounds, for example Urea or sodium citrate. Hydrogen peroxide is particularly preferred as well as the perborates and sodium percarbonate.
  • the amount of the Oxidizing agent depends on its active oxygen content, which in turn from Molecular weight of the oxidizing agent depends. So is the active oxygen content in hydrogen peroxide, for example, 47%, while in sodium perborate tetrahydrate Is 10.4%.
  • the concentration of oxidizing agent in the cleaning liquor should preferably be chosen so that the active oxygen content in the fleet between 1 and 500 ppm and in particular between 5 and is 250 ppm.
  • the cleaning liquor contains those in the process according to the invention
  • other active ingredients are used and / or auxiliaries, such as those in cleaning liquors for dishwashing are common in themselves.
  • auxiliaries such as those in cleaning liquors for dishwashing are common in themselves.
  • These include in particular complexing agents, but also alkalizing active compounds, surfactants of other classes, corrosion inhibitors, Solubilizers, foam inhibitors and enzymes.
  • the complexing agents are compounds which are particularly found in are able to complex the components of water hardness and thereby to rule out conditional faults on the cleaning process. They reinforce continue the cleaning effect of the surfactants.
  • Suitable complexing agents are the polyphosphates, especially pentasodium triphosphate, the salts of Polycarboxylic acids, especially sodium citrate, sodium gluconate and the salts of phosphonobutane tricarboxylic acid, the salts of polyphosphonic acids, for example of 2-hydroxyethane diphosphonic acid, the salts of ethylenediaminetetraacetic acid and the salts of polymeric polycarboxylic acids, in particular of acrylic acid polymerization products, optionally in combination with maleic acid.
  • Alkali salts are usually used, of which again the potassium salts and especially the sodium salts are preferred.
  • the salts in the wash liquor can also be obtained from the complexing acids and added alkalizing agent.
  • the amount of complexing agent depends on the action of the individual substances and can be very different. So complexing agents like the polyphosphates, the carboxylates and the salts of nitrilotriacetic acid in usually higher amounts used than from the others mentioned Complexing agents. Of course, the simultaneous presence of several complexing agents in the wash liquor possible and desirable.
  • the total content of complexing agents in the cleaning liquor is preferably between about 0.01 g / l and about 10 g / l, in particular between about 0.03 g / l and about 5 g / l.
  • a very particularly preferred range is between about 0.1 g / l and about 2 g / l.
  • the pH of the cleaning liquor used according to the invention is alkaline Range, that is, above pH 7.
  • a preferred pH range is Range between about 8 and about 10, but can use more alkaline detergents in the cleaning liquor also a pH value far above, for example in Create range 10 to 13.
  • alkalizing substances added such as alkali hydroxides, especially sodium hydroxide, Alkali silicates and / or other alkaline salts, such as Sodium carbonate and potassium carbonate.
  • the salary in the wash liquor judges the desired alkalinity.
  • nonionic surfactants in particular the addition products from long-chain alcohols with 10 to 18 carbon atoms and ethylene oxide (EO) and optionally also propylene oxide (PO).
  • EO ethylene oxide
  • PO propylene oxide
  • Long-chain alcohols are especially unsaturated Fatty alcohols, for example coconut alcohol, or the so-called Oxo alcohols, which can be branched to some extent, are contemplated.
  • the addition products are also suitable as nonionic surfactants Ethylene oxide and optionally propylene oxide and other long-chain compounds, for example alkylphenols, fatty acids, fatty acid amides and long-chain Glycols.
  • the addition products are particularly low-foaming surfactants from long-chain alcohols with ethylene oxide and optionally propylene oxide, whose free hydroxyl group with a short-chain alcohol, which is preferably 1 has up to 4 carbon atoms, is etherified.
  • the content of this in the cleaning liquor additional surfactants is preferably between about 0.01 g / l and about 8 g / l, in particular between 0.02 g / l and 1 g / l.
  • the cleaning liquor used according to the invention can be produced by the fact that each active ingredient contained separately from the water Cleaning liquor is added.
  • each active ingredient contained separately from the water Cleaning liquor is added.
  • pre-made cleaning agents to use, each one of the required ingredients in the right Ratio contained in a correspondingly higher concentration, and this Dilute agent with water, if necessary with the addition of the other active ingredients.
  • the cleaning agents can be in solid form, but also for example be formulated as a paste or as liquids. Especially then if there are incompatibilities between the oxidizing agent and individual recipe components occur, it may be appropriate to run through the cleaning liquor
  • two separate agents one of which is the oxidizer and the other contains the oxidation sensitive component.
  • a separation into at least two agents in the process according to the invention can also be used if the dosage of the amphoteric Surfactant and the dosage of the oxidizing agent at different Points of the cleaning cycle should take place and the union to the finished Cleaning liquor is only reached through the process.
  • Another object of the invention is therefore also a cleaning agent set of two liquid agents, one of which one contains the amphoteric surfactant and the other contains the oxidizing agent.
  • this contains one liquid means the amphoteric surfactant in amounts between 0.5 % By weight and 80% by weight, in particular in amounts between 4% by weight and 20% by weight, optionally together with other cleaning agents, especially complexing agents and other surfactants.
  • the other one Both liquid agents from this cleaning agent kit contain hydrogen peroxide, in concentrations from 0.1% by weight to 50% by weight, in particular 0.5 wt .-% to 35 wt .-%, and optionally further active ingredients and auxiliaries, in particular complexing agents, stabilizers and other surfactants.
  • the liquid agents can contain solubilizers, for example cumene sulfonate, xylene sulfonate or lower alcohols with 1 to 3 carbon atoms if this is appropriate for a stable formulation.
  • Water of various qualities can be used to produce the wash liquors especially tap water, partially softened or fully desalinated Tap water from water treatment plants or, if necessary, water from wastewater treatment. Depending on the type of machine, there will also be water from the downstream rinse cycles to produce the cleaning liquor used, this water then also active ingredients for rinsing have been used, or may contain acidulants.
  • the oxidizing agent is a variant of the cleaning method according to the invention, or a composition containing this oxidizing agent, added to one of the rinsing baths and then in the form of this Rinsing liquor used to manufacture the actual cleaning liquor.
  • the cleaning liquor is usually applied to the dishes elevated temperatures, especially at temperatures between about 30 and about 70 ° C.
  • the exposure time of the liquor to the dishes is preferably in the range from about 5 to about 360 seconds. Temperature and cleaning time will be essentially determined and depend on the desired cleaning result thus additionally from the composition of the cleaning liquor and the applied mechanics.
  • Connects to the treatment with the cleaning liquor at least one rinse cycle in which the Cleaning liquor is removed from the dishes again.
  • a so-called rinse aid is added to the rinse cycles to ensure that the Wetting the items to be washed and possibly also acidification.
  • Such rinsing agents preferably contain low-foaming agents nonionic surfactants, optionally together with complexing agents Acids, especially citric acid.
  • the rinsing liquid is at least in the last Rinse cycle, preferably to higher temperatures, especially between heated about 50 and about 95 ° C to bring the dishes to a temperature, which shortens the subsequent drying step by allowing evaporation the adhering liquid accelerates.

Claims (9)

  1. Utilisation de jus de nettoyage contenant un agent tensioactif amphotère et un agent d'oxydation contenant de l'oxygène actif, en vue de réduire ou éviter les arrière-odeurs désagréables au cours du nettoyage de la vaisselle.
  2. Procédé de nettoyage de la vaisselle dans lequel la vaisselle est traitée avec un jus de nettoyage qui renferme un agent tensioactif amphotère et un agent d'oxydation possédant de l'oxygène actif, on rince ensuite et ensuite on sèche,
    caractérisé en ce que
    l'agent tensioactif amphotère et l'agent d'oxydation sont mis en oeuvre séparément en vue de la préparation des jus de nettoyage.
  3. Procédé selon la revendication 2 dans lequel l'agent tensioactif amphotère est choisi dans le groupe des composés de formule générale I
    Figure 00190001
    dans laquelle :
    R est un radical alkyle à longue chaíne, le cas échéant ramifié ou non saturé, ayant de 8 à 18 atomes de carbone ou un groupe R3-CO-NH-(CH2)z-,
    R1 est un radical méthyle, un hydrogène, ou un groupe (CH2)x-CO2Y,
    R2 est un radical méthyle, un groupe (CH2)2-OH ou un hydrogène (dans lequel donc l'atome d'azote porte une charge positive) ou bien R2 n'est pas présent,
    R3 est un radical alkyle à longue chaíne, le cas échéant non saturé et le cas échéant substitué, ayant de 7 à 17 atomes de carbone,
    x est une des valeurs 1 ou 2,
    z est une des valeurs 2 ou 3 et,
    Y est un hydrogène, un métal alcalin ou une charge négative;
  4. Procédé selon l'une des revendications 2 ou 3,
    dans lequel
    l'agent d'oxydation est choisi dans le groupe du peroxyde d'hydrogène, des composés qui libèrent du peroxyde d'hydrogène et leurs mélanges.
  5. Procédé selon l'une quelconque des revendication 2 à 4,
    dans lequel
    le jus de nettoyage renferme en supplément au moins un agent complexant choisi dans le groupe des polyphosphates, des polycarboxylates des sels de l'acide nitrilotriacétique, des polyphosphates et des sels d'acides polycarboxyliques polymères.
  6. Procédé selon l'une quelconque des revendication 2 à 5,
    dans lequel
    la teneur en agent tensioactif amphotère dans le jus de nettoyage s'élève de 0,01 g/l à 8 g/l, de préférence de 0,03 g/l à 3 g/l et en particulier de 0,1 g/l à 1,5 g/l.
  7. Procédé selon l'une quelconque des revendication 2 à 6,
    dans lequel
    la teneur en agent d'oxydation calculé comme oxygène actif, s'élève dans le jus de 1 à 500 ppm, de préférence de 5 à 250 ppm.
  8. Procédé selon l'une quelconque des revendication 2 à 7,
    dans lequel
    l'agent d'oxydation est ajouté à une des étapes de rinçage ultérieur du procédé et parvient avec l'écoulement du liquide de rinçage ultérieur dans le jus de nettoyage.
  9. Produit de nettoyage en vue de la production d'un jus de nettoyage pour un procédé conforme à l'une quelconque des revendications 2 à 8,
    caractérisé par
    un agent liquide contenant un agent tensioactif amphotère, de préférence correspondant à la formule I, en quantités comprises entre 0,5 et 80 % en poids, en particulier en quantités comprises entre 4 et 20 % en poids ainsi qu'éventuellement d'autres principes actifs et d'autres additifs, et un autre produit liquide contenant du peroxyde d'hydrogène à des concentrations allant de 0,1 à 50 % en poids, en particulier de 0,5 à 35 % en poids, ainsi qu'éventuellement d'autres principes actifs et d'autres adjuvants.
EP98114776A 1998-05-30 1998-08-06 Procédé pour le nettoyage de la vaisselle Revoked EP0971019B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19824356A DE19824356A1 (de) 1998-05-30 1998-05-30 Verfahren zur Reinigung von Geschirr
DE19824356 1998-05-30

Publications (2)

Publication Number Publication Date
EP0971019A1 EP0971019A1 (fr) 2000-01-12
EP0971019B1 true EP0971019B1 (fr) 2001-02-28

Family

ID=7869489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98114776A Revoked EP0971019B1 (fr) 1998-05-30 1998-08-06 Procédé pour le nettoyage de la vaisselle

Country Status (7)

Country Link
EP (1) EP0971019B1 (fr)
AT (1) ATE199388T1 (fr)
DE (2) DE19824356A1 (fr)
DK (1) DK0971019T3 (fr)
ES (1) ES2156015T3 (fr)
GR (1) GR3035529T3 (fr)
PT (1) PT971019E (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE468013B (sv) * 1991-08-16 1992-10-19 Kommentus Ecogreen Ab Maskindiskmedel och dess framstaellning
DE69225246T2 (de) * 1992-11-18 1998-09-17 Kao Corp Flüssige bleichmittelzusammensetzung
EP0694058A1 (fr) * 1993-04-27 1996-01-31 The Procter & Gamble Company Compositions de detergent liquide ou granulaire pour lave-vaisselle
JP3422854B2 (ja) * 1994-09-22 2003-06-30 花王株式会社 粉末漂白剤組成物
TR199801336T2 (xx) * 1996-02-23 1998-10-21 The Procter & Gamble Company Dezenfekte edici bile�imler.
PL327945A1 (en) * 1996-02-23 1999-01-04 Procter & Gamble Disinfecting compositions and methods of disinfecting surfaces
EP0805198A1 (fr) * 1996-05-03 1997-11-05 The Procter & Gamble Company Compositions nettoyantes
EP0835925A3 (fr) * 1996-09-09 1999-01-27 Unilever N.V. Compositions pour lave-vaisselle contenant des polymères amphotères

Also Published As

Publication number Publication date
ATE199388T1 (de) 2001-03-15
GR3035529T3 (en) 2001-06-29
PT971019E (pt) 2001-08-30
EP0971019A1 (fr) 2000-01-12
DE59800499D1 (de) 2001-04-05
DE19824356A1 (de) 1999-12-02
ES2156015T3 (es) 2001-06-01
DK0971019T3 (da) 2001-06-05

Similar Documents

Publication Publication Date Title
DE19630615B4 (de) Verfahren zum Reinigen und Desinfizieren von Oberflächen und Produktionsanlagen
DE1926422C3 (de) Wasch- und Reinigungsmittel
DE3112854C2 (fr)
DE2057258C2 (de) Neue Gerüststoffe, Verfahren zu ihrer Herstellung und Wasch- und Reinigungsmittel, die diese Gerüststoffe enthalten
DE2362114C2 (de) Flüssiges schaumreguliertes Wasch- und Reinigungsmittel
DE3539284A1 (de) Verfahren zur reinigung von aluminiumbehaeltern
DE2336291A1 (de) Fluessiges wasch- und reinigungsmittel
DE2327234C3 (de) Phosphatfreies Waschmittel
EP0256148A1 (fr) Détergent liquide, granulé ou sous forme de poudre, spécialement pour machines à laver la vaisselle
EP0808894B1 (fr) Procédé pour le nettoyage de la vaisselle
DE3048641A1 (de) "tensidhaltiges gemisch zur reinigung harter oberflaechen"
DE19741910A1 (de) Verfahren zur Reinigung und Desinfektion von medizinischen Instrumenten
DE19541646A1 (de) Verfahren und Mittel zum Reinigen von Melkanlagen
DE69728303T2 (de) Reinigungsmittel
DE2409457A1 (de) Reinigungsmittelzusammensetzung
EP1021519B1 (fr) Procede pour le nettoyage d'instruments chirurgicaux
EP1730258B1 (fr) Agent de nettoyage et de desinfection et agent indicateur
DE60314007T2 (de) Säurereinigungsverfahren für geschirrspülen in der maschine
DE3832885C2 (fr)
DE1628651C3 (de) Verfahren zum maschinellen Spülen von Geschirr
EP3063327B1 (fr) Kit et procédé de nettoyage et de désinfection d'instruments et d'appareils médicaux
EP0971019B1 (fr) Procédé pour le nettoyage de la vaisselle
EP4066644A1 (fr) Nettoyant désinfectant, son procédé de production et son utilisation
DE19804829A1 (de) Verfahren zur Reinigung von Melkanlagen
EP1327674B1 (fr) Utilisation d'un détergent concentré et procédé de nettoyage d'instruments chirurgicaux

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19980806

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IT LI NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

AKX Designation fees paid

Free format text: AT BE CH DE DK ES FI FR GB GR IT LI NL PT SE

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IT LI NL PT SE

REF Corresponds to:

Ref document number: 199388

Country of ref document: AT

Date of ref document: 20010315

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 59800499

Country of ref document: DE

Date of ref document: 20010405

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN P. & C. S.N.C.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2156015

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20010621

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20010807

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20010810

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20010813

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20010824

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20010927

Year of fee payment: 4

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PLBF Reply of patent proprietor to notice(s) of opposition

Free format text: ORIGINAL CODE: EPIDOS OBSO

26 Opposition filed

Opponent name: THE PROCTER & GAMBLE COMPANY

Effective date: 20011128

Opponent name: CHEMISCHE FABRIK DR. WEIGERT (GMBH & CO.)

Effective date: 20011128

RDAH Patent revoked

Free format text: ORIGINAL CODE: EPIDOS REVO

NLR1 Nl: opposition has been filed with the epo

Opponent name: THE PROCTER & GAMBLE COMPANY

Opponent name: CHEMISCHE FABRIK DR. WEIGERT (GMBH & CO.)

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: ECOLAB GMBH & CO. OHG

27W Patent revoked

Effective date: 20020216

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: PT

Payment date: 20020715

Year of fee payment: 5

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: ECOLAB GMBH & CO. OHG

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020808

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20020814

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020816

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 20020822

Year of fee payment: 5

NLR2 Nl: decision of opposition
REG Reference to a national code

Ref country code: PT

Ref legal event code: MF4A

Effective date: 20020716