Chemical refill system
US4859375A · kind A · utility
72Cited by
15References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1986 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Dec 29, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/3127
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A system for automatically filling a bubbler, or other vapor delivery system from a reservoir, is disclosed in which the conduit system is purged and pressurized with inert gas, using a unique refill reservoir, level sensing and valving system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.