Formulation dosing device for contact lens fabrication
US12370766B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2022 |
| Grant date | Jul 29, 2025 |
| Priority date | — |
| Expiry date | Jul 8, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2011/0041
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A dosing system and method for delivery of contact lens formulation(s) to a contact lens forming mold. The system includes a carrier portion configured for holding a contact lens mold, and an alignment mandrel configured for retaining a lens formulation delivery device. The lens formulation delivery device is retained in a specified position relative to the contact lens mold for precise location of delivery of the lens formulation within the contact lens mold. A first lens formulation can be dosed to a center location in the mold, and a different second lens formulation can be dosed to a ring-shaped pattern around the center location, to form a contact lens having different center and edge characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.