Parylene coated desiccant sheet with activation strip
US6493960B2 · kind B2 · utility
13Cited by
21References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2000 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Jun 11, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B21/083
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus for drying the air inside of hermetically sealed electronic devices. The apparatus includes a desiccant part and an activation piece that is attached to the desiccant part. The desiccant part and activation piece are attached together and then covered, except for the portions where the two pieces are attached, with a polymer that has a low moisture vapor transmission rate, such as parylene. The apparatus may be added into an electronic device during assembly. The desiccant, or drying agent, is not activated, by removal of the activation piece, until prior to closure of the hermetically sealed electronic device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.