Apparatuses and methods for multistage molding of lenses
US12290997B2 · kind B2 · utility
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6References
22Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 22, 2023 |
| Grant date | May 6, 2025 |
| Priority date | — |
| Expiry date | Sep 22, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatuses and methods for multistage molding of contact lenses containing low oxygen permeable components or oxygen impermeable components. Components may be embedded within a contact lens by forming a device on a polymer substrate, molding a spacer onto a male mold, bonding the device to the spacer, removing the polymer substrate, and molding the remainder of the contact lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.