High precision manufacture of polyurethane products such as spinal disc implants having a gradual modulus variation
US8353960B2 · kind B2 · utility
0Cited by
30References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2003 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | May 20, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2120/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A process for making a polymeric product having a gradual variation in modulus through at least a portion of the product is disclosed together with an artificial spinal disc formed using the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.