Injection molding
US4078875A · kind A · utility
40Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1977 |
| Grant date | Mar 14, 1978 |
| Priority date | — |
| Expiry date | Feb 2, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/83
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Process and apparatus for injection molding plastic to provide a foamed core with an unfoamed outer skin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.