WO2022184954A1 - Tête pour brosse à dents et procédé de fabrication - Google Patents

Tête pour brosse à dents et procédé de fabrication Download PDF

Info

Publication number
WO2022184954A1
WO2022184954A1 PCT/ES2022/070108 ES2022070108W WO2022184954A1 WO 2022184954 A1 WO2022184954 A1 WO 2022184954A1 ES 2022070108 W ES2022070108 W ES 2022070108W WO 2022184954 A1 WO2022184954 A1 WO 2022184954A1
Authority
WO
WIPO (PCT)
Prior art keywords
head
internal
base
external
bristles
Prior art date
Application number
PCT/ES2022/070108
Other languages
English (en)
Spanish (es)
Inventor
Paul Victoria Mancy
Carlos Martín Gascón
Original Assignee
Ziz Dental Care S.L.
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
Application filed by Ziz Dental Care S.L. filed Critical Ziz Dental Care S.L.
Priority to US18/279,997 priority Critical patent/US20240148132A1/en
Publication of WO2022184954A1 publication Critical patent/WO2022184954A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/0004—Additional brush head
    • A46B5/0012—Brushes with two or more heads on the same end of a handle for simultaneous use, e.g. cooperating with each-other
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/005—Arrangements of the bristles in the brush body where the brushing material is not made of bristles, e.g. sponge, rubber or paper
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B7/00—Bristle carriers arranged in the brush body
    • A46B7/04—Bristle carriers arranged in the brush body interchangeably removable bristle carriers
    • A46B7/042—Clip or snap connection for bristle carriers
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/025—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups the bristles or the tufts being arranged in an angled position relative to each other
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/026—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups where the surface of the brush body or carrier is not in one plane, e.g. not flat
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04—Arranged like in or for toothbrushes
    • A46B9/045—Arranged like in or for toothbrushes specially adapted for cleaning a plurality of tooth surfaces simultaneously
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/06—Arrangement of mixed bristles or tufts of bristles, e.g. wire, fibre, rubber
    • 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

Definitions

  • toothbrush head refers to a toothbrush head that has two opposite bases, one external and one internal, which, linked together by a central bridge that defines an intermediate space between them, include respective sets of bristles, external and internal, that emerge facing each other, and there is also a third set of central bristles that emerge from the surfaces of the aforementioned union bridge, with which said head allows brushing the entire surface of the teeth at the same time , effortlessly accessing both its upper part and the external and internal parts.
  • the invention refers to the manufacturing method of said head.
  • the field of application of the present invention falls within the sector of the industry dedicated to the manufacture of toothbrushes.
  • toothbrushes although they can have different designs, are usually made up of a head that includes a single base with a single set of bristles oriented, all of them, towards the same side.
  • the aforementioned set of bristles may include groups of bristles of different lengths or different angles, to brush the surface of the teeth, especially to access their inner face and in particular the molars, it is necessary to perform handle orientation operations to achieve the correct insertion of the brush head inside the open mouth so that these bristles access all the nooks and crannies of the inner part of the teeth, making correct brushing difficult for most users and especially being a extremely difficult task for people with reduced mobility or for their caregivers.
  • brushes do not adapt to the anatomy of the mouth and teeth, presenting, as mentioned, bristles with wrong angles and lengths.
  • brushes have been developed with means for cleaning teeth or silicone bristles, but these have a great disadvantage derived from the material that results in very thick and soft bristles that do not allow their introduction into interdental spaces.
  • the low hardness of the silicone material used between 50 and 70 Shore A, prevents the bristles from dragging the material and fulfilling their function.
  • the objective of the present invention is, therefore, to provide a toothbrush and head that avoids said problem and facilitates said access, avoiding such maneuvers by developing a head with bristles oriented so that they reach all sides of the tooth at the same time. all the teeth in the mouth and to the gum line, without it being necessary to arrange the handle in awkward positions or without having to open the mouth wide to do so.
  • the present invention has as its first object a head for a toothbrush according to claim 1.
  • a toothbrush whose head, instead of only having a base provided with a unique set of bristles that emerge all oriented in the same direction to brush the surface of the teeth, it is distinguished by comprising two opposite bases, an external base and an internal base, which are linked to each other by a central bridge that defines an intermediate space between both.
  • cleaning elements preferably bristles, which will be in contact with the teeth and gums.
  • the central bridge has a configuration in the form of a flat partition where the central bristles emerge from its two opposite surfaces or faces.
  • Said central bridge optionally, may be extendable, so that by exerting some pressure on the brush head, the length of the bridge will adapt to the different sizes of teeth, mainly to their width, adjusting the existing separation between the external and internal bristles.
  • the external bristles, associated with the internal face of the external base, and the internal bristles, associated with the internal face of the internal base are arranged in such a way that they emerge from the surface of the external base with an angle of inclination. certain.
  • said angle is between 40° and 50°, preferably 45°, so that they allow attacking the outer surface of the tooth with said inclination, as recommended by the brushing technique known as the "Bass technique".
  • the internal bristles have an inclination of between 20° and 35°, preferably 30°, to attack the inner surface of the teeth, as well as the gum line.
  • the central bristles located in the central partition, also have an angle between 40° and 50°, preferably 45°.
  • These central bristles preferably have several faces, more preferably a truncated-pyramidal shape, the different faces of which make it possible to improve brushing efficiency as the brush moves from left to right inside the mouth.
  • the head of the brush of the invention is made up of several components obtained by injection, and which are assembled together by means of coupling elements, preferably mechanical, with the aim of achieving the mentioned angles in the bristles for optimal brushing of all the surfaces of the brush. tooth.
  • the head comprises: an external part, formed by the external base and a first reinforcement core, on which the external base is injected, an internal part, formed by the internal base, and a second reinforcement core on which the internal base is injected, a central bridge between the two bases and that determines a separation space between the internal faces of said bases,
  • the bridge can be integrated in the external base, in the internal base or be independent of both.
  • the The first core on which the external part is injected has an external end with means for coupling a handle to the head of the toothbrush.
  • the outer, inner, and center bristles are preferably integrated into the inner face of the outer base, the inner face of the inner base, and the bridge surfaces during injection thereof, although it is also possible, though not desirable, incorporate said bristles in subsequent manufacturing procedures by means of different techniques such as, for example, ultrasound, adhesives or even mechanical bonding.
  • the external and internal bases and central bridge with the respective sets of external, internal and central bristles, which form part of the external part and the internal part, are made of TPE (Thermoplastic Elastomer) or TPU (Thermoplastic Polyurethane), preferably TPU, by injection molding, without ruling out other materials such as SEBS (polystyrene-ethylene-butadiene-styrene elastomer), or LSR liquid silicone, with a hardness of the materials used between 80 and 100 Shore A, preferably between 85 and 95 Shore A, thus ensuring a correct rigidity in the bristles for the dragging of food remains between the teeth by the bristles, while allowing the injection of the material.
  • TPE Thermoplastic Elastomer
  • TPU Thermoplastic Polyurethane
  • SEBS polystyrene-ethylene-butadiene-styrene elastomer
  • LSR liquid silicone with a hardness of the materials used between 80 and 100 Shore A,
  • An antibacterial additive can be added.
  • Distance between the facing bristles of the external base and the internal base can be as little as 0 mm, allowing access to the different interdental spaces
  • a thickness of the bristles of the inner and outer base between 0.5 mm and 1 mm, with a decreasing thickness from the inner face towards the free ends of the bristles,
  • a thickness of the central bristles preferably with a frustopyramidal shape, which preferably varies between a length of between 2.1 and 3.8 mm, a width of between 0.5 and 0.8 mm and a height of between 1 and 2, 6mm
  • the reinforcing cores are preferably made of PP (Polypropylene), PC (Polycarbonate) or ABS (Acrylonitrile Butadiene Styrene).
  • a second object of the invention is a method of manufacturing a toothbrush head according to claim 13.
  • the manufacturing method of the head object of the invention comprises the following stages:
  • the mechanical assembly is done by tongue and groove when inserting the second body into the first body, although it could also be the other way around, that is, the first body into the second body.
  • the coupling is preferably carried out by clipping one piece inside another, achieving a coupling that is not reversible, that is to say, that it does not allow the separation of both bodies, unless a separation force much greater than the force for the introduction of one piece inside the other is applied.
  • the preferred coupling mechanism to join both bodies is clip, latch, snap-fit or press-fit type.
  • the two bodies fit together through the elastic deformation of at least one of the bodies so that interference between them is produced by inserting at least one male element into at least one female element.
  • At least one of the two bodies has interference means so that when the male element is inserted into the female element, at least one of the two is temporarily deformed to overcome the interference means and after overcoming them it returns to its undeformed position, remaining coupled the male element in the female element.
  • the lock between both bodies is permanent to prevent both from separating and the coupling being disassembled, releasing the lock, during the use of the toothbrush with the consequent risk for the user of the brush.
  • there may or may not be a relative movement, in such a way that it allows the extension of the bridge to adapt to different sizes of teeth or, on the contrary, the length of the bridge is fixed.
  • Said extension of the bridge may be due to the elastic characteristics of the material of the bridge itself or to elastic means arranged in the coupling between both bodies or to telescopic means arranged in the coupling between both bodies.
  • the male-female coupling between both pieces can be consolidated by means of an adhesive or ultrasonic welding.
  • the second soul associated with the internal part, has at least one male element that is inserted into the first soul, integrated in the external part with the built-in bridge, and which has at least one female element in which it is inserted and is coupled the male element of the second soul, by pressure permanently.
  • the second core associated with the internal part, has at least one male element that is inserted into the external part with the built-in bridge and has at least one female element, independent of the first soul, in which the male element of the second soul is inserted and permanently attached.
  • the second soul associated with the internal part, has at least one female element that is inserted into the first soul, integrated in the external part with the built-in bridge, and which has at least one male element in which it is inserted and remains coupled. the male element of the second soul, by pressure permanently.
  • the second soul associated with the internal part with the built-in bridge, has at least one female element in which the first soul is inserted, integrated in the external part and which has at least one male element that is inserted and remains coupled in the female element of the second core, permanently pressed.
  • the second soul associated with the internal part with the built-in bridge, has at least one female element independent of the second soul, in which the external part is inserted with at least one male element and is permanently attached to the female element. of the second soul.
  • the second soul associated with the internal part with the built-in bridge, has at least one male element that is inserted into the first soul, integrated in the external part, and which has at least one female element in which it is inserted and is coupled. the male element of the second soul, by pressure permanently.
  • both the first and second souls are hidden, so that
  • the internal and external bases being made of TPE/TPU, facilitate adaptation to different thicknesses of teeth and gums, as well as to different dental anatomies.
  • the separation between the external and internal base of the brush head may vary depending on the end user depending on the size of the teeth, or the head itself can include telescopic means in the bridge and coupling between both outer and inner bodies.
  • the coupling between the external and internal body of the headstock can be extensible thanks to the existence of an internal guide in the central bridge with elastic or accordion-shaped coupling that allows it to move longitudinally when a certain force is applied with the brush inside the mouth, causing the separation between the two parts of the head, and which returns to its initial position when said force is no longer applied.
  • the external body of the head through the external base, may be attached to the handle by means of a fixed joint or by means of an articulated joint, which allows a certain movement of said head with respect to of the handle to further improve the accessibility of the handle to all parts of the denture.
  • the coupling between the handle and the head is preferably carried out through the first core on which the external part is over-injected, since said core has an outer end, opposite the end of coupling to the inner part, when the first core is inserted. It is used as a coupling body, which incorporates means for coupling the handle.
  • Figures number 1 and 2 show respective views, in lower and upper perspective respectively, of a first example of embodiment of the toothbrush object of the invention, specifically an example whose head comprises several pieces that form respective parts that are joined by coupling mechanic, appreciating his general configuration and essential parts.
  • Figures 3 and 4 show respective top and bottom perspective views, respectively, of the head of the brush of the invention shown in figures 1 and 2, showing the parts and elements of said head in greater detail.
  • Figures number 5 and 6 show respective views, in upper and lower perspective, respectively, of the brush head shown in figures 3 and 4, in this case represented with the two parts that form it without coupling to each other or to the handle.
  • Figures number 7 and 8 show respective views, in upper and lower plan, respectively, of the head of the brush of the invention shown in the preceding figures.
  • Figure number 9 shows a sectional view of the brush head, according to section C-C indicated in figure 8, showing the mechanical coupling between the two parts thereof.
  • Figures 10 and 11 show respective views, in side elevation, of the head of the brush of the invention, according to the example shown in figures 1 to 9, represented with the central bridge in the retracted and extended position, respectively, by elastic coupling.
  • Figure number 12 again shows a side elevational view of the brush head, similar to the one shown in figure 11 with the central bridge in an extended position, in this case thanks to an accordion-shaped hook.
  • Figure number 13 shows a front elevation view of the external part of the head of the invention, according to the example shown in figures 1 to 12, showing the configuration of alternating inclination, left and right, of the central bristles that emerge from one of the faces of the partition that forms the central bridge.
  • Figure number 14 shows an exploded perspective view of the example of the brush of the invention shown in figures 1 to 13.
  • Figure number 15 shows an alternative construction of a head according to the present invention with a handle coupled to the outer part with means different from those shown in the previous figures.
  • Figure number 16 shows a perspective view of the head of another embodiment of the invention, in this case, an example in which said head is made up of several parts obtained by injection that are joined together by ultrasonic welding.
  • Figures number 17 to 22 show respective views of the different pieces that make up the head of the brush of the invention, according to the example shown in Figure 15, showing their configuration with and without incorporated bristles.
  • Figure number 23 shows a perspective view of the three pieces that make up the brush head, according to the example shown in figure 16, represented once the bristles have been incorporated and prior to joining them by ultrasonic welding.
  • FIG. 24 to 26 show perspective views of another embodiment of the brush of the invention, in this case an example in which said head is formed by a single piece obtained by injection with the bristles attached to it by means of adhesive glue, having represented in figure 24 said piece without the bristles, in figure 25 with the bristles glued on one of the sides of the piece and in figure 26 once all the bristles have been glued.
  • the brush (1) comprises a head (2) with bristles (3) that is coupled to a holding handle (4), said head (2) presenting two opposite bases, one external (5) and an internal (6), which are linked to each other by a central bridge (7) that defines an intermediate space (8) separating them, with a set of external bristles (3a) and another set of internal bristles (3b), which emerge facing each other from the respective inner faces of said opposite bases (5, 6), as well as a set of central bristles (3c) that emerge from the central bridge (7) and perpendicular to the surface of said bridge (7).
  • the central bridge (7) has a flat partition-shaped configuration with central bristles (3c) emerging from their respective opposite faces.
  • the external bristles (3a) that emerge from the external base (5) are arranged at an angle of inclination of about 45° with respect to said base (5).
  • the central bristles (3c) also emerge from the two faces of the central bridge (7) at an angle of 45 degrees and, as can be seen in figure 13, they are oriented alternately to the right and to the left.
  • the head (2) is extensible so that the intermediate space (8), separating the external base (5) with the external bristles (3a) and the internal base (6) with the internal bristles (3b), adapts to the different sizes of teeth by exerting pressure during brushing, returning to its position when the pressure is released.
  • the described head (2) of the brush (1) is made up of various parts obtained by injection and assembled together by mechanical coupling, by pressure or snap-fit. fit or clip
  • the head (2) comprises: an external part (9), formed by the external base (5) with the external bristles (3a) and the central bridge ( 7) with the central bristles (3b), a first core (10), with one end with means for holding the handle (4) and at the opposite end a coupling element, male or female, and on which is injected said external part (9), forming an external part or external body (A) of the head, an internal part (11), formed by the internal base (6) with the internal bristles (3b),
  • the coupling between both cores (10, 12) is carried out by inserting a male element into a female element, said male element or female element being arranged in one or the other core.
  • the second soul (12) of the internal part or body (B) has a female element, in the form of anchor nails, in which the male element in the form of an arrow is inserted, of the first soul (10) of the external part (A) after being inserted in the central bridge (7) of the external part (9).
  • the bridge is incorporated in the external part (9) but it could also be incorporated in the internal part (6).
  • the second soul (12) of the internal part or body (B), provided with anchoring nails acting as a male element, is coupled with the external part (9) of the external part or body (A), passing through holes (13) made for this purpose in the central bridge (7), as shown in figure 6.
  • the bridge is incorporated in the external part (9) but it could also be incorporated into the internal piece
  • the external part (9) and the internal part (11) are made of TPE or TPU and the first and second cores (10, 12) are made of PP, PC or ABS.
  • the external part (9) is over-injected to the first soul (10), obtained in turn previously by injection, forming the external part or body (A) of the head, and the internal part (11) is over-injected to the second soul ( 12) which is also a piece previously obtained by injection, forming the internal part or body (B).
  • connection between the external part (A) and the internal part (B) of the head is extensible, so that the separation space (8) adapts to different tooth sizes (figures 10 and 11) by means of an internal guide ( 15) center bridge
  • the handle (4) preferably comprises a core (4a) obtained by injection of PP, PC or ABS, with a cover (4b) over-injected of TPE or TPU.
  • the coupling end (4d) of the handle with the end (14) of the core (10) has lateral recesses in which complementary projections existing on the external base (5) are inserted and associated with projections on the end (14) of the core (10), as can be seen in greater detail in figure 5.
  • Figure 15 shows an alternative brush, similar to that of figure 14, in which the head has slight modifications with respect to the head shown and described in said figure and also shows coupling means between the first piece and the handle different from those shown.
  • the soul (10) It has two projections (14a) with through holes at its end (14). Between said two projections (14a) the end (4d) of the handle (4) is arranged, which has a hole coinciding with the through holes of the projections (14a) of the end (14) of the core (10).
  • a pin (4c) is introduced which passes through the through holes of the end (14a) of the core (10) and the hollow end (4d) of the handle (4). In this way, the rotation of the handle (4) with respect to the brush head (1) is also allowed.
  • the head (2) of the brush (1) of the invention is made up of several parts obtained by injection and joined together by ultrasonic welding.
  • the head (2) comprises:
  • the head (2) is made up of a single one-piece piece (17) of plastic material obtained by injection, in which the base is integrated.
  • the external base (5) has an end (14), having been provided, in any of the embodiments described, that said coupling between the head (2) and the handle (4) can be mobile to allow relative movement between both parts of the brush (1).

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Brushes (AREA)

Abstract

La présente invention concerne une tête pour brosse à dents et un procédé de fabrication, laquelle tête avec des brins (3) se raccorde à un manche (4) de fixation, cette tête (2) comprenant deux bases opposées, une base externe (5) et une base interne (6) qui sont reliées entre elles au moyen d'un pont central (7) qui définit un espace intermédiaire (8) de séparation entre les deux; un ensemble de brins externes (3a) et un autre ensemble de brins internes (3b) qui sortent de manière opposée entre eux, des faces internes respectives desdites bases (5,6) opposées, et un ensemble de brins centraux (3c) qui sortent du pont central (7) et dans le sens perpendiculaire au reste des brins (3a,3b).
PCT/ES2022/070108 2021-03-05 2022-03-01 Tête pour brosse à dents et procédé de fabrication WO2022184954A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US18/279,997 US20240148132A1 (en) 2021-03-05 2022-03-01 Toothbrush head and manufacturing method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP21382185.3A EP4052608A1 (fr) 2021-03-05 2021-03-05 Tête de brosse à dents et son procédé de fabrication
EPEP21382185.3 2021-03-05

Publications (1)

Publication Number Publication Date
WO2022184954A1 true WO2022184954A1 (fr) 2022-09-09

Family

ID=75362549

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2022/070108 WO2022184954A1 (fr) 2021-03-05 2022-03-01 Tête pour brosse à dents et procédé de fabrication

Country Status (3)

Country Link
US (1) US20240148132A1 (fr)
EP (1) EP4052608A1 (fr)
WO (1) WO2022184954A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4428091A (en) * 1981-12-14 1984-01-31 Janssen Thomas B Toothbrush
WO1991013570A1 (fr) * 1990-03-16 1991-09-19 Hegemann International Ltd. Brosse rotative pour les dents
FR3047892A1 (fr) * 2017-06-08 2017-08-25 Yann Castaldo Tete de brossage pour brosse a dents electrique, et brosse a dents electrique associee

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4428091A (en) * 1981-12-14 1984-01-31 Janssen Thomas B Toothbrush
WO1991013570A1 (fr) * 1990-03-16 1991-09-19 Hegemann International Ltd. Brosse rotative pour les dents
FR3047892A1 (fr) * 2017-06-08 2017-08-25 Yann Castaldo Tete de brossage pour brosse a dents electrique, et brosse a dents electrique associee

Also Published As

Publication number Publication date
EP4052608A1 (fr) 2022-09-07
US20240148132A1 (en) 2024-05-09

Similar Documents

Publication Publication Date Title
TWI403291B (zh) 牙刷
ES2534822T3 (es) Dispositivo de higiene bucodental
ES2373227T3 (es) Cepillo de dientes.
RU2689219C1 (ru) Приспособление для ухода за полостью рта
ES2230138T3 (es) Cepillos, en especial cepillos de dientes.
EP3223651B1 (fr) Accessoire de soins bucco-dentaires comportant un manche à composants multiples
ES2259693T3 (es) Cepillo de dientes.
ES2670839T3 (es) Cepillo dental
ES2327984T3 (es) Cepillo de dientes.
BR112017010792B1 (pt) Instrumento de higiene bucal
US8671497B2 (en) Toothbrush
JP2014507237A (ja) ハンドルに可撓性領域を備える歯ブラシ
EP3223652B1 (fr) Ustensile pour l'hygiène bucco-dentaire comportant un manche à éléments multiples
BRPI0414509B1 (pt) cabeça para uso em uma escova de dentes, e, método para formar a mesma
ES1063617U (es) Cepillo dental.
CN107105882A (zh) 口腔护理器具
TW201634197A (zh) 具有多組件握柄之口腔保健用具（三）
US10080427B2 (en) Oral care implement and method for manufacturing the same
US11089862B2 (en) Oral-care implement and method for manufacturing the same
CN107105877B (zh) 口腔护理器具
WO2022184954A1 (fr) Tête pour brosse à dents et procédé de fabrication
AU2018331325B2 (en) Bristle for an oral care implement
KR200213054Y1 (ko) 칫솔 머리

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22709762

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
WWE Wipo information: entry into national phase

Ref document number: 18279997

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22709762

Country of ref document: EP

Kind code of ref document: A1