Plastic molds for ophthalmic devices and methods for forming same
US5551663A · kind A · utility
8Cited by
23References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1994 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Sep 20, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C33/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Plastic molds for ophthalmic devices and methods of making such molds are disclosed. The plastic molds are provided with abrasion resistant, release-enhancing faces formed by coatings of particular compositions of polyacryloylated alkane polyols and alkane polyols.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.