US2900351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion exchange material
Assignee: KERR MC GEE OIL IND Inc
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Filing: 1956-02-06
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Granted: 1959-08-18
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Expires: 1976-02-06
Abstract
No abstract record available.
Inventors
- 👤 Mayer B Goren
- 👤 Ira D Elkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:36
CPC Classifications
B; B01; B01J; B01J39/00; B01J39/08; B01J39/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A PROCESS FOR PRODUCING AN ACTIVATABLE CHAR COMPRISING HOMOGENEOUSLY INCORPORATING A SULFURIC ACID REACTIVE AND EXTRACTABLE ORGANIC SUBSTANCE SELECTED FROM THE CLASS CONSISTING OF PHENOLS AND AMINES CONTAINING NOT MORE THAN 10 CARBON ATOMS IN ASPHALTIC BITUMINOUS MATERIAL, REACING IN PARTICULATE FORM EACH PART BY WEIGHT OF THE RESULTANT MATERIAL IN THE PRESENCE OF 1/2 TO 9 PARTS BY WEIGHT OF CONCENTRATED SULFURIC ACID AT A TEMPERATURE OF 60-150* C. TO EXTRACT AT LEAST A PORTION OF THE ORGANIC SUBSTANCE FROM THE ASPHALTIC BITUMINOUS MATERIAL AND PRODUCE A SULFONATED PRODUCT READILY WET BY WATER RAISING THE TEMPERATURE OF AT LEAST THE SULFONATED WATER, RAISING THE TEMPERATURE OF AT LEAST THE SULFONATED ASPHALTIC BITUMINOUS MATERIAL PRODUCT TO ABOUT 300450* C. AND HEATING TO DRYNESS, AND CHARRING THE SULFONATED ASPHALTIC BITUMINOUS MATERAL PRODUCT IN THE ABSENCED OF ELEMENTAL OXYGEN.
Claim 2
Dependent Claim
137 words
A PROCESS FOR PRODUCING AN ACTIVATABLE CHAR COMPRISING HOMOGENEOUSLY INCORPORATING A SULFURIC ACID REACTIVE AND EXTRACTABLE ORGANIC SUBSTANCE SELECTED FROM THE CLASS CONSISTING OF PHENOLS AND AMINES CONTAINING NOT MORE THAN 10 CARBON ATOMS IN ASPHALTIC BITUMINOUS MATERIAL, REACING IN PARTICULATE FORM EACH PART BY WEIGHT OF THE RESULTANT MATERIAL IN THE PRESENCE OF 1/2 TO 9 PARTS BY WEIGHT OF CONCENTRATED SULFURIC ACID AT A TEMPERATURE OF 60-150* C. TO EXTRACT AT LEAST A PORTION OF THE ORGANIC SUBSTANCE FROM THE ASPHALTIC BITUMINOUS MATERIAL AND PRODUCE A SULFONATED PRODUCT READILY WET BY WATER RAISING THE TEMPERATURE OF AT LEAST THE SULFONATED WATER, RAISING THE TEMPERATURE OF AT LEAST THE SULFONATED ASPHALTIC BITUMINOUS MATERIAL PRODUCT TO ABOUT 300450* C. AND HEATING TO DRYNESS, AND CHARRING THE SULFONATED ASPHALTIC BITUMINOUS MATERAL PRODUCT IN THE ABSENCED OF ELEMENTAL OXYGEN.
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) | 1962-08-17 | 1963-02-16 | 1963-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-17 | 1967-02-16 | 1967-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-17 | 1971-02-16 | 1971-08-18 | $7700.00 | Window Closed / Lapsed |