Universal punch block apparatus
US5046389A · kind A · utility
6Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1989 |
| Grant date | Sep 10, 1991 |
| Priority date | — |
| Expiry date | Dec 6, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/8858
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An inspection station punch block apparatus for removing a portion of an integrated circuit die lead from a lead frame. The missing lead is used to mark a defective die and is lataer monitored by a scanning means which causes rejection of the die from the lead frame. A method of carrying out this operation is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.