US4336288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Technique for preventing salt migration
Assignee: AT&T Inc
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Filing: 1980-09-18
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Granted: 1982-06-22
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Expires: 2000-09-18
Abstract
Abstract A technique for preventing salt migration in a salt solution at elevated temperature involves selectively coating the container with an RTV (Room Temperature Vulcanizing) dispersion, allowing the dispersion to cure. The coating's slippery surface prevents the salt from creeping up the sides of the container.
Inventors
- 👤 Ernest J. Leddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:16
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/22; B05D7/227
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
81 words
A method for inhibiting migration of excess salt from an aqueous solution in a container comprising the steps of coating the inside of said container with a room temperature vulcanizing silicone, allowing said silicone to cure so as to form a slippery surface within said container, and adding said solution to the container such that the slippery surface of said cured silicone substantially inhibits said migration while the composition of said solution remains essentially uncontaminated in the presence of said silicone.
Claim 2
Independent Claim
81 words
A method for inhibiting migration of excess salt from an aqueous solution in a container comprising the steps of coating the inside of said container with a room temperature vulcanizing silicone, allowing said silicone to cure so as to form a slippery surface within said container, and adding said solution to the container such that the slippery surface of said cured silicone substantially inhibits said migration while the composition of said solution remains essentially uncontaminated in the presence of said silicone.
Claim 3
Dependent Claim
40 words
The method of claim 1 including the step of allowing said silicone to cure by exposing said compound to room temperature for not over 24 hours and then heating said compound at 150 degrees C. for not over 8 hours.
Claim 4
Dependent Claim
27 words
The method of claim 1 further including the step of maintaining a predetermined relative humidity in the atmosphere above said solution with excess salt in said solution.
Claim 5
Dependent Claim
25 words
The method of claim 1 further including the step of heating said solution to an elevated temperature above room temperature after addition to said container.
Claim 6
Dependent Claim
20 words
The method of claim 4 including the step of heating said solution to a temperature of approximately 100 degrees C.
Claim 7
Independent Claim
67 words
An apparatus comprising a vessel having walls for confining a saturated salt solution therein, the excess salt providing an atmosphere of stable humidity within said vessel above said solution characterized in that a room temperature vulcanizing silicone material is deposited on the walls of said vessel at the edges of the surface of said solution whereby the migration of said excess salt along said walls is inhibited.
Claim 8
Independent Claim
67 words
An apparatus comprising a vessel having walls for confining a saturated salt solution therein, the excess salt providing an atmosphere of stable humidity within said vessel above said solution characterized in that a room temperature vulcanizing silicone material is deposited on the walls of said vessel at the edges of the surface of said solution whereby the migration of said excess salt along said walls is inhibited.
References Cited (Backward Citations)
US2688568A
Cited
US2832701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |