Ethylene oxide monitoring device
US4826772A · kind A · utility
32Cited by
14References
43Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1987 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Apr 1, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/142222
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Monitoring exposure to ethylene oxide using a dosimeter or monitoring device avoids using devices that collect a sample for future testing or devices that must be sent away for lab analysis. The device comprises a reactive coating including a layer of activated alumina particles coated with p-nitrobenzyl pyridine and ammonium chloride, and is adapted to instantly produce a color intensity change directly related to the dosage of the reactive coating to ethylene oxide upon the addition of a developer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.