US3346484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing acidic compounds from aqueous solutions
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1965-05-03
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Granted: 1967-10-10
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Lewis William Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:53
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/12; B; B01; B01J; B01J49/00; B01J49/40; C10G25/02; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/517
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
IN A PROCESS WHEREIN A FEED STREAM CONTAINING AT LEAST ONE CONSTITUTENT OF THE GROUP CONSISTING OF MERCAPTANS, H2S, THIOPHENE, AND PHENOL IS CONTACTED WITH A SOLID SORBING MATERIAL SELECTED FROM THE GROUP CONSISTING OF ION EXCHANGE RESINS AND ACTIVATED CHARCOAL WHEREIN THE SORBING MATERIAL AFTER SUFFICIENT CONTACT WITH THE SAID FEED STREAM IS SUBSTANTIALLY DEACTIVATED THE IMPROVEMENT WHICH COMPRISES RESTORING THE SAID SORBING MATERIAL SUBSTANTIALLY TO ITS ORIGINAL CAPACITY BY HEATING THE SORBING MATERIAL TO A TEMPERATURE OF ROM ABOUT 200* TO ABOUT 350*F. AT A PRESSURE OF FROM ABOUT 10 TO ABOUT 300 MILLIMETERS FOR A SUFFICIENT PERIOD TO SUBSTANTIALLY RESTORE THE ORIGINAL CAPACITY OF THE SORBING MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |