WO2025243219 - REACTIVE DYES AND THEIR USE IN CONTACT LENSES
National phase entry is expected:
Publication Number
WO/2025/243219
Publication Date
27.11.2025
International Application No.
PCT/IB2025/055270
International Filing Date
21.05.2025
Title **
[English]
REACTIVE DYES AND THEIR USE IN CONTACT LENSES
[French]
COLORANTS RÉACTIFS ET LEUR UTILISATION DANS LES LENTILLES DE CONTACT
Applicants **
ALCON INC.
Inventors
HOLLAND, Troy Vernon
BREITKOPF, Richard Charles
CHANG, Frank
Priority Data
63/650,762
22.05.2024
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
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| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Pages of Specification | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| 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 | 2305 | |
| EPO | Filing, Examination, Granting | 11581 | |
| Japan | Filing, Examination, Granting | 2340 | |
| South Korea | Filing, Examination, Granting | 2449 | |
| USA | Filing, Examination, Granting | 4940 |
Total:
23,615
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Abstract[English]
The present invention is related to reactive dyes each of which comprises a dichlorotriazine or chlorotriazine group and has a desired UV/visible absorption spectrum for selectively filtering a certain color light. They are suitable for method for producing colored silicone hydrogel contact lenses each made of a silicone hydrogel material having hydroxyl groups. The present invention is also related to a colored silicone hydrogel contact lens comprising a colored annular ring and/or a colored circular area in which a reactive dye is applied and thereby covalently attached.[French]
La présente invention concerne des colorants réactifs dont chacun comprend un groupe dichlorotriazine ou chlorotriazine et présente un spectre d'absorption UV/visible souhaité pour filtrer de manière sélective une certaine lumière colorée. Ils sont appropriés pour un procédé de production de lentilles de contact en hydrogel de silicone colorées constituées chacune d'un matériau d'hydrogel de silicone présentant des groupes hydroxyle. La présente invention concerne également une lentille de contact en hydrogel de silicone colorée comportant un anneau annulaire coloré et/ou une zone circulaire colorée dans laquelle un colorant réactif est appliqué et ainsi fixé de manière covalente.