Method of making and using an improved liquid crystal cumulative dosimeter container
US5158364A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Dec 27, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K3/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of making and using a liquid crystal cumulative dosimeter container including a resilient outer body sealed to confine a first liquid crystal composition constituent and a second liquid crystal composition constituent and having at least one transparent section to permit observation of the color of the confined composition, and a barrier contained completely within and physically unattached to the outer body for separating the first constituent from the second constituent, whereby disruption of the barrier allows the first constituent to mix with the seocnd constituent. The barrier is formed either by encapsulating one or both of the constituents or by using air bubbles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.