Bar code blocking carrier
US5492222A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Apr 13, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S283/901
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A substantially transparent carrier for carrying a group of items, such as bottles which hold beverages, is made of a plastic material which includes a chemical blocking agent. The carrier includes a machine readable bar code thereon. Each item includes an individual machine readable bar code thereon which is at least partially covered by the carrier. The chemical blocking agent is capable of blocking, by reflection or absorption, light having a narrow wavelength "tuned" or selected to prevent the individual bar codes on the items from being read by a typical bar code reader beam while allowing the bar code on the carrier to be read.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.