US2655438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Salt crystallization process
Assignee: Diamond Crystal Salt Co
•
Filing: 1950-12-06
•
Granted: 1953-10-13
•
Expires: 1970-12-06
Abstract
No abstract record available.
Inventors
- 👤 Gilkey William Keith
- 👤 Shuman Albert Cornwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:53
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/22; C01D3/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
IN THE PROCESS FOR PRODUCING SODIUM CHLORIDE CRYSTALS OF THE HOPPER TYPE BY SURFACE EVAPORATION OF A BRINE, THE STEP COMPRISING ADDING A PREDETERMINED QUANTITY OF POLYOXYETHYLENE SORBITAN MONOLAURATE TO THE BRINE PRIOR TO SURFACE EVAPORATION THEREOF.
Claim 2
Dependent Claim
37 words
IN THE PROCESS FOR PRODUCING SODIUM CHLORIDE CRYSTALS OF THE HOPPER TYPE BY SURFACE EVAPORATION OF A BRINE, THE STEP COMPRISING ADDING A PREDETERMINED QUANTITY OF POLYOXYETHYLENE SORBITAN MONOLAURATE TO THE BRINE PRIOR TO SURFACE EVAPORATION THEREOF.
References Cited (Backward Citations)
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US2044942A
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US903357A
Cited
US1766705A
Cited
US1598935A
Cited
US2113248A
Cited
US2452576A
Cited
US2595238A
Cited
GB617137A
Cited
US2604385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |