DK169886B1 - Toothbrush which slowly releases disinfectants and method of making them - Google Patents
Toothbrush which slowly releases disinfectants and method of making them Download PDFInfo
- Publication number
- DK169886B1 DK169886B1 DK110989A DK110989A DK169886B1 DK 169886 B1 DK169886 B1 DK 169886B1 DK 110989 A DK110989 A DK 110989A DK 110989 A DK110989 A DK 110989A DK 169886 B1 DK169886 B1 DK 169886B1
- Authority
- DK
- Denmark
- Prior art keywords
- toothbrush
- hair
- substance
- anchor
- holes
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
- A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
- A46B11/0068—Brushes where the reservoir is specifically intended for solid substance that dissolves gradually
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
- A46B11/0072—Details
- A46B11/0079—Arrangements for preventing undesired leakage or dispensing
- A46B11/0082—Means for closing, sealing or controlling the flow using capillary action
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/1066—Toothbrush for cleaning the teeth or dentures
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- Brushes (AREA)
Description
DK 169886 B1DK 169886 B1
Opfindelsen angår en tandbørste af den i krav l's indledning anførte art.The invention relates to a toothbrush of the kind set forth in claim 1.
Omkostningerne til pleje af sundheden vokser kraftigt i USA og andre lande. En væsentlig årsag til de voksende omkostninger 5 er tand- og tandkødssygdomme.Health care costs are growing sharply in the United States and other countries. A major reason for the growing cost 5 is gum and gum disease.
Fremskridt inden for tandplejemidler og modaliteter til behandling af tandbeslægtede sygdomme har i vid udstrækning bidraget til forhindringen og behandlingen af disse tilstande.Advances in dentistry and modalities for the treatment of dental diseases have largely contributed to the prevention and treatment of these conditions.
Det primære redskab til den daglige rengøring af tænderne er 10 stadig den almindelige tandbørste. Da tandbørsten ofte kommer i berøring med det orale miljø og derefter måske efterlades i et ikke sterilt miljø indtil næste brug, kan tandbørstens hår huse bakterier, og ved fornyet brug af tandbørsten kan hårene være en kilde til indføring af bakterier i mundhulen.The primary tool for daily cleaning of the teeth is 10 the regular toothbrush. As the toothbrush often comes into contact with the oral environment and then may be left in a non-sterile environment until the next use, the toothbrush's hair may harbor bacteria, and upon reuse of the toothbrush, the hairs may be a source of introduction of bacteria into the oral cavity.
15 yderligere har tandbørsten ikke været anvendt som en medikamentkilde, men nærmere som en applikator for tandplejemiddel. Der vil være fordele ved at benytte tandbørsten som en medikamentkilde, fortrinsvis som et komplement til tandplejemidlet, såfremt der kunne findes et anvendeligt og praktisk bil-20 ligt middel herfor.In addition, the toothbrush has not been used as a medicinal source, but rather as an applicator for dentifrice. There will be advantages in using the toothbrush as a source of medication, preferably as a complement to the dentifrice, if a useful and practically affordable means can be found.
Selv om det tekniske problem ved at udforme en tandbørste, der er i stand til at udlevere tandplejemiddel eller andre midler, længe har været kendt, er der ikke blevet udviklet noget tilfredsstillende fungerende system til opfyldelse af dette længe 25 følte behov.Although the technical problem of designing a toothbrush capable of delivering dentifrice or other agents has long been known, no satisfactory functioning system has been developed to meet this long felt need.
Den kendte teknik illustrerer, at det forholder sig sådan. F.eks. viser U.S. patent nr. 914.501 et reservoir, der er tildannet langs børsternes sider og indrettet til at indeholde flydende tandplejemiddel. Dette skrift viser ikke et længere 30 varende middel til frigørelse af tandplejemidlet eller andre midler, idet det flydende tandplejemiddel vil blive udvasket DK 169886 B1 2 af mundhulen ved hvert brug.The prior art illustrates that this is the case. For example. shows U.S. No. 914,501, a reservoir formed along the sides of the brushes and arranged to contain liquid dentifrice. This publication does not disclose a longer lasting agent for releasing the dentifrice or other agents, as the liquid dentifrice will be leached from the oral cavity at each use.
Et andet forsøg på at løse problemet er vist i U.S. patent nr. / 1.238.883, hvor børstens "hår" er vulkaniseret gummi og indbefatter poler- og rensestoffer.Another attempt to solve the problem is shown in U.S. Pat. Patent No. / 1,238,883, wherein the "hair" of the brush is vulcanized rubber and includes polishes and cleansers.
5 I U.S. patent nr. 1.214.256 anbringes en bomuldsindsats, der indeholder tandplejemiddel, i børsten. Dette anses for at være upraktisk, idet det kræver, at brugeren må påtage sig den besværlige opgave at udskifte indsatsene efter hvert brug. En tilsvarende indretning med en indsats er beskrevet i U.S. pa-10 tent nr. 4.588.089, hvor et hylster, der indeholder tandpasta, indsættes i en tandbørste, og tandpastaen frigøres ved hjælp af en spids. Denne teknik benyttes også i U.S. patent nr. 3.316.580, som foreslår brugen af et hylster anbragt mellem børsterne. Sådanne indretninger, der kræver indsatse, er kom-15 plicerede at anvende.5 In U.S. Patent No. 1,214,256 places a cotton insert containing dentifrice into the brush. This is considered impractical as it requires the user to take on the cumbersome task of replacing the insert after each use. A similar insert device is disclosed in U.S. Pat. Patent No. 4,588,089, wherein a casing containing toothpaste is inserted into a toothbrush and the toothpaste is released by means of a tip. This technique is also used in U.S. Pat. No. 3,316,580, which proposes the use of a sleeve disposed between the brushes. Such devices requiring insert are complicated to use.
Tilsvarende forbehold gælder over for U.S. patent nr. 4.453.679, hvor tandbørstens skaft har en separat indretning til frigørelse af forskellige stoffer. Anvendelse af udlevering fra skaftet til løsning af problemet er beskrevet i en 20 lang række andre patenter, såsom U.S. patenterne 1.896.982, 2.077.758 og 2.303.667 samt engelsk patent nr. 259.268. -Similar reservations apply to U.S. No. 4,453,679, wherein the toothbrush shaft has a separate device for releasing various substances. Use of shaft delivery to solve the problem is described in a wide variety of other patents, such as U.S. Pat. patents 1,896,982, 2,077,758 and 2,303,667 as well as English Patent Nos. 259,268. -
En anden fremgangsmåde, som anses for at være mindre hensigtsmæssig, er at belægge eller sprøjte børsterne med forskellige stoffer. Repræsentative eksempler herpå er U.S. patenterne 25 1.982.660, 3.302.230, 3.691.585 samt canadisk patent nr.Another method which is considered less appropriate is to coat or spray the brushes with various substances. Representative examples of this are U.S. Pat. patents 25, 1,982,660, 3,302,230, 3,691,585 and Canadian Patent no.
549.168.549,168.
Ud fra gennemgangen af ovennævnte patenter er det åbenlyst, at ingen af de heri viste indretninger løser det dobbelte problem med på en praktisk måde at holde tandbørstens børster sterile 30 og tilvejebringe en gennemførlig langsom frigørelsesmekanisme for antibakterielle midler eller andre medikamenter. ^ DK 169886 B1 3From the review of the above patents, it is obvious that none of the devices shown herein solves the dual problem of practically keeping the toothbrush's brushes sterile and providing a feasible slow release mechanism for antibacterial or other drugs. ^ DK 169886 B1 3
En anden løsning er vist i engelsk patent nr. 259.258, hvor et desinficeringsmiddel er anbragt til at kommunicere med børsternes børsteklyngehuller eller direkte i forbindelse med børsterne (fig. 10-14). Imidlertid er reservoiret i patentets 5 fig. 7-9 ikke anbragt inden i selve børsteklyngehullerne, men står i forbindelse med dette via en kanal. Dette er i fremstillingsmæssig henseende en relativ dyr løsning. Endvidere viser dette patent ikke, hvorledes det stof, der skal overføres til børsterne, kommunicerer hermed og absorberes af disse.Another solution is shown in English Patent No. 259,258, where a disinfectant is arranged to communicate with the brush cluster holes or directly in connection with the brushes (Figs. 10-14). However, the reservoir of FIG. 7-9 not located within the brush cluster holes themselves, but connected to it via a channel. From a manufacturing point of view, this is a relatively expensive solution. Furthermore, this patent does not show how the substance to be transferred to the brushes communicates and is absorbed by them.
10 På baggrund af den kendsgerning, at stort set alle i dag på markedet værende tandbørster benytter hydrofobe plastbørster, fremgår det ikke, hvorledes indretningen ifølge dette patent vil virke til at føre desinficeringsmidlet eller andre medikamenter op gennem børsterne hørende til sådanne moderne tand-15 børster.10 In view of the fact that virtually all toothbrushes on the market today use hydrophobic plastic brushes, it is not clear how the device according to this patent will work to carry the disinfectant or other drugs through the brushes of such modern toothbrushes. .
Fig. 3 i engelsk patent nr. 1.026.738 viser udtagninger 6 anbragt i en ring omkring børsteklyngehullernes 4 indre perimeter til tilvejebringelse af en kilde af desinficeringsmiddel, når børsten neddyppes i vand. Dette patent viser ikke, hvorle-20 des en langtidsbestandig kilde af desinficeringsmiddel og/eller andre medikamenter kan opretholdes over lange perioder eller absorberes af børsterne over sådanne lange perioder, dvs. over længere brugsperioder.FIG. 3 of English Patent No. 1,026,738 discloses recesses 6 arranged in a ring around the inner perimeter of the brush cluster holes 4 to provide a source of disinfectant when the brush is immersed in water. This patent does not show how a long-term source of disinfectant and / or other drugs can be maintained over long periods or absorbed by the brushes over such long periods, i.e. over extended periods of use.
Formålet med opfindelsen er at tilvejebringe en let producer-25 bar tandbørste, der er i stand til over lange tidsperioder at frigøre antibakterielle midler eller andre medikamenter via børsterne.The object of the invention is to provide a lightly produced toothbrush capable of releasing antibacterial agents or other drugs via the brushes over long periods of time.
Til opnåelse af dette formål er tandbørsten ifølge opfindelsen ejendommelig ved de i krav 1 anførte kendetegnende træk. Ved 30 at belægge børsteankrene med det aktuelle middel inden disse forankres i børsteklyngehullerne opnås mulighed for en væsentlig mere rationel produktion af denne type tandbørster end hidtil kendt.To achieve this purpose, the toothbrush of the invention is characterized by the characteristic features of claim 1. By coating the brush anchors with the current agent prior to anchoring them in the brush cluster holes, a much more rational production of this type of toothbrushes is achieved than previously known.
DK 169886 B1 4DK 169886 B1 4
Opfindelsen angår endvidere en fremgangsmåde af den i krav 2' s 5 indledning anførte art til fremstilling af en tandbørste.The invention further relates to a method of the kind set forth in claim 2 for the preparation of a toothbrush.
i,in,
Fremgangsmåden ifølge opfindelsen er ejendommelig ved de i krav 2 angivne kendetegnende træk, som muliggør en meget rati-5 onel produktion.The process according to the invention is characterized by the characteristic features of claim 2 which enable a very rational production.
Opfindelsen forklares nærmere nedenfor under henvisning til tegningen, hvis figur skematisk viser et tværsnit af en del af et hoved af en tandbørste ifølge opfindelsen.The invention is explained in more detail below with reference to the drawing, the figure of which shows schematically a cross section of a part of a head of a toothbrush according to the invention.
Som antydet er det velkendt, at almindelige tandbørster ikke 10 er sterile og huser bakterier, som overføres til mundhulen under gentagen tandbørstning. Således kan det primære redskab til tandrensning selv være en kilde til infektion i munden.As indicated, it is well known that ordinary toothbrushes are not sterile and harbor bacteria which are transmitted to the oral cavity during repeated toothbrushing. Thus, the primary tool for tooth cleaning can itself be a source of infection in the mouth.
Det ville være ønskværdigt udover at eliminere ovennævnte infektionsproblem at tilvejebringe en tandbørste, som er i stand 15 til at frigøre et medikament, der er effektivt mod tand- og tandkødssygdomme over lange tidsperioder, dvs. ved brug af tandbørsten flere gange.In addition to eliminating the above infection problem, it would be desirable to provide a toothbrush capable of releasing a drug that is effective against gum and gum disease over long periods of time, i.e. using the toothbrush several times.
I flere af de ovenfor omtalte patenter erkendes problemet vedrørende tandbørstens sterilitet og ønskværdigheden af at be-20 nytte tandbørsten til udlevering af et medikament:In several of the patents mentioned above, the problem of the toothbrush's sterility and the desirability of using the toothbrush to deliver a drug is recognized:
Indretningen ifølge foreliggende opfindelse løser disse længe erkendte behov, ved at desinficeringsmiddel, medikament eller en blanding heraf er indeholdt i et langsomt frigørende materiale. Som følge heraf vil under gentagen børstning vandet og 25 spyttet i mundhulen under børstning sive ind i hårklyngehul-lerne og bevirke frigørelsen af en afmålt mængde desinficeringsmiddel og/eller medikament. Disse midler bevæger sig under børstningen op af hårklyngehullet og ud af dette samt ind i mundhulen. Endvidere er der ved afslutningen af børstningen 30 tilstrækkeligt desinficeringsmiddel tilbage på børsterne og * tandbørstens hoved og de nærliggende dele af skaftet til at DK 169886 B1 5 sterilisere disse, således at der ikke vil blive dannet bakterier på børsten og munden blive forurenet ved efterfølgende tandbørstninger over en længere tidsperiode på i hovedsagen 2-3 måneder.The device of the present invention addresses these long-recognized needs in that the disinfectant, drug or mixture thereof is contained in a slowly releasing material. As a result, during repeated brushing, the water and saliva in the oral cavity during brushing will seep into the hair clusters and cause the release of a metered amount of disinfectant and / or drug. These agents move during brushing out of the hairpin hole and out of this as well as into the oral cavity. Furthermore, at the end of brush 30, sufficient disinfectant is left on the brushes and the head of the toothbrush and the adjacent parts of the shaft to sterilize them so that no bacteria will be formed on the brush and the mouth will be contaminated by subsequent toothbrushes over a longer period of time in the main 2-3 months.
5 Til illustration af en udførelsesform for opfindelsen viser tegningen skematisk et tværsnit af en del af hovedet af en tandbørste ifølge opfindelsen. Indretningen, der i sin helhed har henvisningstallet 10, har et børstehoved li. I børstehovedet 11 er der vist to børsteklyngehuller 15 og 16 til børster-10 ne.5 To illustrate an embodiment of the invention, the drawing schematically shows a cross section of a portion of the head of a toothbrush according to the invention. The device, which in its entirety has the reference numeral 10, has a brush head 1. Brush head 11 shows two brush cluster holes 15 and 16 for brush 10s.
Som vist indsættes børsterne eller hårene 13 i hullerne 15 og 16 mest almindeligt ved hjælp af et anker 17, der typisk består af aluminium eller en legering, såsom messing eller sølvnikkel .As shown, the brushes or hairs 13 are most commonly inserted into holes 15 and 16 by means of an anchor 17, typically composed of aluminum or an alloy such as brass or silver nickel.
15 Tandbørsten benyttes på den sædvanlige måde, dvs. der påføres tandplejemiddel på hårene, og børsten indføres i mundhulen med henblik på børstning. Det vand og spyt, der fremkaldes under denne proces, bevirker, at afmålte mængder desinficeringsmiddel og/eller medikament fra materialet føres op langs hårene 20 ud af hårklyngehullerne og ind i munden. Ved afslutning af børstningen forbliver der tilstrækkelig desinficeringsmiddel på børsterne til at gøre disse sterile., hvorved dannelsen af bakteriekolonier.og svampevækst forhindres, hvilket ved kendte tandbørster inficerer mundhulen, når tandbørsten benyttes 25 næste gang.The toothbrush is used in the usual manner, ie. Dental care is applied to the hair and the brush is inserted into the oral cavity for brushing. The water and saliva produced during this process cause metered amounts of disinfectant and / or drug from the material to be carried up along the hairs 20 out of the hair clusters and into the mouth. At the end of brushing, sufficient disinfectant remains on the brushes to render them sterile, thereby preventing bacterial colonization and fungal growth, which in known toothbrushes infects the oral cavity when the toothbrush is used next.
Materialet der langsomt frigiver stof kan være af naturlige eller syntetiske polymerer, f .eks. gelatine, polyvinylpyrrolχάση og hydroxyethylmethacrylat.The slow-release material may be of natural or synthetic polymers, e.g. gelatin, polyvinylpyrrolχάση and hydroxyethyl methacrylate.
Som desinficeringsmidler til at dræbe bakterie- og svampekolo-30 nier på hårene og børsten kan der benyttes antimikrobielle midler, såsom chlorhexidin, Triclosan og bromchlorophen samt andre kendte midler. En lang række medikamenter, der er effek- DK 169886 B1 6 tive til at ødelægge bakterier og svampe, kan benyttes både * til at forhindre bakterie/svampevækst på børsten og til at levere sådanne stoffer til mundhulen. *As disinfectants for killing bacterial and fungal colonies on the hair and brush, antimicrobial agents such as chlorhexidine, triclosan and bromochlorophen may be used as well as other known agents. A wide variety of drugs that are effective in destroying bacteria and fungi can be used both * to prevent bacterial / fungal growth on the brush and to deliver such substances to the oral cavity. *
Hvad angår desinficeringsmidler og antibakterielle midler, er 5 andre muligheder:As for disinfectants and antibacterial agents, 5 other options are:
Hexetiden Phenoler generelt Tri chlorpheny1Hexetide Phenols Generally Tri Chloropheny1
Formaldehyd Kvaternære ammoniumforbindelser 10 (f.eks. Benzalkoniumchlorid)Formaldehyde Quaternary ammonium compounds 10 (e.g., benzalkonium chloride)
Pyridinderivater (f.eks. Cetylpyridiniumchlorid)Pyridine derivatives (eg Cetylpyridinium chloride)
Hexaclorophan.Hexaclorophan.
Selv om tandbørsten ifølge opfindelsen er velegnet til almindelig børstning med et tandplejemiddel, kan den også benyttes 15 uden dette og således benyttes som et middel til at levere passende medikamenter til mundhulen.Although the toothbrush of the invention is suitable for ordinary brushing with a dentifrice, it can also be used without it and thus used as a means of delivering appropriate medications to the oral cavity.
Ifølge opfindelsen er ankeret 17, der normalt er af metal, såsom nikkel-sølv, messing, aluminium m.v., belagt med de ovenfor beskrevne desindicerings og/eller antibakterielle/fungus-20 midler.According to the invention, the anchor 17, which is usually of metal, such as nickel silver, brass, aluminum, etc., is coated with the above-described disinfectant and / or antibacterial / fungus agents.
Mere specifikt påføres der på metallet en belægning, der kvælder i vand, eller en belægning, der er i stand til at frigøre det ovennævnte middel (midler), i koncentrationer, der er tilstrækkelige til opnåelse af de desinficerende og medicinske 25 formål, når det er vådt. F.eks. kommer metalankrene normalt fra en uendelig rulle af ovennævnte metal (metaller) og føres til en tuftingmaskine og skæres i længder på stedet. Belægningsmaterialet kan f.eks. være en polyvinyl eller en tilsvarende polymer, der er i stand til at danne en film, f.eks.More specifically, a coating that swells in water or a coating capable of releasing the above agent (s) is applied to the metal at concentrations sufficient to achieve the disinfectant and medical purposes when is wet. For example. the metal anchors usually come from an infinite roll of the above metal (metals) and are fed to a tufting machine and cut into lengths on site. The coating material can e.g. be a polyvinyl or a corresponding polymer capable of forming a film, e.g.
30 støbt fra alkohol. Belægningen kan påføres metalrullen på fremstillingsstedet eller lige inden tufteprocessen ved hjælp > af et belægningsbad eller påsprøjtning. For at tilbageholde30 molded from alcohol. The coating can be applied to the metal roll at the manufacturing site or just prior to the tufts process using a coating bath or spray. To withhold
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16565088A | 1988-03-08 | 1988-03-08 | |
US16565088 | 1988-03-08 |
Publications (3)
Publication Number | Publication Date |
---|---|
DK110989D0 DK110989D0 (en) | 1989-03-07 |
DK110989A DK110989A (en) | 1989-09-09 |
DK169886B1 true DK169886B1 (en) | 1995-03-27 |
Family
ID=22599844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK110989A DK169886B1 (en) | 1988-03-08 | 1989-03-07 | Toothbrush which slowly releases disinfectants and method of making them |
Country Status (9)
Country | Link |
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EP (1) | EP0332026B1 (en) |
JP (1) | JPH027903A (en) |
AU (1) | AU616483B2 (en) |
BR (1) | BR8901058A (en) |
CA (1) | CA1321290C (en) |
DE (1) | DE68907502T2 (en) |
DK (1) | DK169886B1 (en) |
MX (1) | MX169824B (en) |
PH (1) | PH27587A (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01101917A (en) * | 1987-10-15 | 1989-04-19 | Sangi Co Ltd | Toothbrush |
FR2643261A1 (en) * | 1989-02-22 | 1990-08-24 | Tonelli Jean Charles | Improvement to dentifrices |
DE19646519A1 (en) * | 1996-11-12 | 1998-05-14 | Pedex & Co Gmbh | Dental care device and method for manufacturing cleaning elements for dental care devices |
DE19818553C1 (en) * | 1998-04-24 | 1999-08-05 | Rueb F A Holding Gmbh | Making plastic toothbrush combating microorganism growth amongst its bristles |
US7331731B2 (en) | 2002-09-05 | 2008-02-19 | Colgate-Palmolive Company | Oral care toothbrush |
US8240937B2 (en) | 2002-09-05 | 2012-08-14 | Colgate-Palmolive Company | Oral care implement with bead retention |
US7478959B2 (en) | 2002-09-05 | 2009-01-20 | Colgate-Palmolive Company | Oral care toothbrush |
US8459892B2 (en) | 2008-06-25 | 2013-06-11 | Colgate-Palmolive Company | Oral care implement |
US8282298B2 (en) | 2008-06-26 | 2012-10-09 | Colgate-Palmolive Company | Oral care implement |
USD660599S1 (en) | 2009-02-05 | 2012-05-29 | Colgate-Palmolive Company | Toothbrush |
TWI462709B (en) | 2010-03-31 | 2014-12-01 | Colgate Palmolive Co | Oral care implement with rapid flavor release |
ITPD20130126A1 (en) * | 2013-05-10 | 2014-11-11 | Spazzolificio Piave Spa | HEAD OF TEETH BRUSH |
US10448729B2 (en) * | 2014-09-29 | 2019-10-22 | Koninklijke Philips N.V. | Oral care device having a pump-free fluid delivery system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE451728C (en) * | 1927-11-03 | Cornelius Gordijn Jr | Brush with a brush body provided with cavities for receiving an antiseptic | |
JPS437396Y1 (en) * | 1965-10-12 | 1968-04-02 | ||
JPS4318259Y1 (en) * | 1966-06-15 | 1968-07-29 | ||
US3378870A (en) * | 1967-03-22 | 1968-04-23 | Matsunaga Kenji | Toothbrush |
PH23397A (en) * | 1985-12-11 | 1989-07-26 | Unilever Nv | Oral hygiene product |
-
1989
- 1989-02-28 DE DE89103503T patent/DE68907502T2/en not_active Expired - Fee Related
- 1989-02-28 EP EP89103503A patent/EP0332026B1/en not_active Expired - Lifetime
- 1989-03-01 AU AU30876/89A patent/AU616483B2/en not_active Ceased
- 1989-03-06 MX MX015159A patent/MX169824B/en unknown
- 1989-03-07 CA CA000592981A patent/CA1321290C/en not_active Expired - Fee Related
- 1989-03-07 PH PH38298A patent/PH27587A/en unknown
- 1989-03-07 BR BR898901058A patent/BR8901058A/en not_active IP Right Cessation
- 1989-03-07 DK DK110989A patent/DK169886B1/en active
- 1989-03-08 JP JP1055999A patent/JPH027903A/en active Pending
Also Published As
Publication number | Publication date |
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CA1321290C (en) | 1993-08-17 |
DK110989D0 (en) | 1989-03-07 |
BR8901058A (en) | 1989-10-24 |
JPH027903A (en) | 1990-01-11 |
DE68907502T2 (en) | 1994-02-17 |
MX169824B (en) | 1993-07-27 |
PH27587A (en) | 1993-08-18 |
AU616483B2 (en) | 1991-10-31 |
DE68907502D1 (en) | 1993-08-19 |
AU3087689A (en) | 1989-09-14 |
EP0332026B1 (en) | 1993-07-14 |
DK110989A (en) | 1989-09-09 |
EP0332026A1 (en) | 1989-09-13 |
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