Valve for sequential chemical operations
US4597412A · kind A · utility
64Cited by
6References
22Claims
0Family size
Inventor
Key dates
| Filing date | Jan 23, 1985 |
| Grant date | Jul 1, 1986 |
| Priority date | — |
| Expiry date | Jan 23, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87684
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A valve for multiple sequential operations such as biosynthesis, in which the valve body has a longitudinal groove as a common passage for a longitudinal sequence of local ports, and a unitary diaphragm controlled by a plurality of solenoid operable plungers opens and closes the local ports to the common passage by blocking fluid flow across the lands intervening between the local ports and the common passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.