Circular bar code
US5798514A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Jan 11, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2019/06243
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A circular bar code includes first teeth directed radially inward from an outer ring and defining a radial position at which information is encoded and second teeth, tooth directed radially outward from an inner ring and opposing a corresponding one of the first teeth, wherein the information is encoded based on subdivisions of a gap between opposing first and second teeth. In one implementation, the circular bar code is printed on a disk coated with an antibiotic. The disk is used for determining the effectiveness of the antibiotic in killing bacteria, wherein the circular bar code provides identity and concentration information for the antibiotic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.