WO2023228074 - SANDWICH COLORED HYDROGEL CONTACT LENSES
National phase entry:
Publication Number
WO/2023/228074
Publication Date
30.11.2023
International Application No.
PCT/IB2023/055289
International Filing Date
23.05.2023
Title **
[English]
SANDWICH COLORED HYDROGEL CONTACT LENSES
[French]
LENTILLES DE CONTACT EN HYDROGEL COLORÉES EN SANDWICH
Applicants **
ALCON INC.
Inventors
TUCKER, Robert Carey
VARDE, Pushkar S.
LANG, Weihong
OYLER, Paul William
Priority Data
63/365,311
25.05.2022
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
| Pages for Publication | * |
| Number of Pages with Drawings | * |
| Pages of Specification | * |
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| Number of Office Actions | * |
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International Searching Authority |
EPO
* |
| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
* |
| Type of Assignment |
The Standard Agent's Assignment
* |
| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
| * | |
| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2053 | |
| EPO | Filing, Examination, Granting | 8637 | |
| Japan | Filing, Examination, Granting | 2186 | |
| South Korea | Filing, Examination, Granting | 2135 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,751
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
The invention is directed to a sandwich colored hydrogel contact lenses lens, comprising: a pupil section, a generally annular iris section surrounding the pupil section, wherein the iris section having at least one colored, printed, opaque, intermittent pattern, wherein the said pattern is covered by a clear donut shape-layer layer, wherein the clear donut shape-layer layer is on inner surface of lens to the observer and has a thickness at least 25 µm. And the method make such lenses using a common polypropylene base curve (BC Mold 1) and two different front curve molds (FC Mold 1, FC Mold 2) that provided different volume gaps to accommodate the size requirements of the two layers.[French]
L'invention concerne une lentille de lentilles de contact en hydrogel colorées en sandwich, comprenant : une section de pupille, une section d'iris généralement annulaire entourant la section de pupille, la section d'iris ayant au moins un motif intermittent coloré, imprimé, opaque, ledit motif étant recouvert par une couche en forme de beignet claire, la couche en forme de beignet claire étant sur la surface interne de la lentille pour l'observateur et ayant une épaisseur supérieure ou égale à 25 µm. Et la méthode donne de telles lentilles à l'aide d'un moule de courbe de base de polypropylène commun (moule BC 1) et de deux moules de courbe avant différents (moule FC 1, moule FC 2) qui fournissent différents espaces de volume pour s'adapter aux exigences de taille des deux couches.