Process for forming an optically clear polyurethane lens or cornea
US4386039A · kind A · utility
25Cited by
9References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 27, 1981 |
| Grant date | May 31, 1983 |
| Priority date | — |
| Expiry date | Feb 27, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2240/004
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Process for forming optically clear lenses or artifical corneas from a reaction product of 4,4' dicyclohexylmethane diisocyanate, polytetramethylene ether glycol and ethylene oxide-capped trimethylol propane. The resulting polyurethane is optically clear and suitable for use as an artificial cornea, or a permanently implantable lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.