Membrane package construction
Abstract
Abstract An improved process for the preparation of a packaged membrane device is described whereby alternating diagonally-located confined areas of fluid sealant are prepared on each screen separator as it is incorporated in a stack between spaced membranes disposed in substantially parallel surface-to-surface array. After the package components are stacked, the sealant areas cured and the assembly sealed around the periphery, holes are drilled into the package in line with the areas of confined cured sealant to develop the manifold system and define a first group of flow volumes and a second group of flow volumes alternating between the first group. The completed structure is essentially the structure described and claimed in U.S. Pat. No. 3,564,819 - Neulander et al.
Inventors
- 👤 A Judkins
Bibliographic Details
Claims Analysis
Total Claims: 3References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |