Microscopic bar code for component identification and method for making same
US5907144A · kind A · utility
31Cited by
26References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1997 |
| Grant date | May 25, 1999 |
| Priority date | — |
| Expiry date | Feb 5, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K1/126
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention is a method and apparatus for imprinting a microscopic code on a small surface, such as the edge of a magnetic disk, or the head used to read or write information to the disk and a magnetic disk imprinted with such microscopic identification codes. The invention provides a way to identify products using microscopic codes, such as bar codes, by using a laser to imprint such microscopic bar codes on a product. The identification meets the stringent cleanliness requirements of the computer industry without generating debris, and so is exceptionally suited for use in identifying hard disks and heads used in a disk drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.