US3173969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for determining the titratable acidity of spent sulfuric alkylation acid
Assignee: Standard Oil Co
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Filing: 1961-11-17
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Granted: 1965-03-16
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Expires: 1981-11-17
Abstract
No abstract record available.
Inventors
- 👤 Kapff Sixt Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:55
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE METHOD OF OBTAINING A RELATIONSHIP BETWEEN THE TITRATABLE ACIDITY OF SPENT SULFURIC ACID ALKYLATION CATALYST AND THE ELECTRICAL CONDUCTIVITY THEREOF WHICH METHOD COMPRISES PROGRESSIVELY DILUTING A PLURALITY OF SPENT SULFURIC ALKYLATION ACID SAMPLES OF KNOWN ACIDITIES WITH WATER, THE TOTAL DILUTION OF EACH SAMPLE BEING AT LEAST GREAT ENOUGH TO CAUSE A FIRST MAXIMUM IN ELECTRICAL CONDUCTIVITY TO OCCUR THEREIN, MEASURING THE FIRST MAXIMUM ELECTRICAL CONDUCTIVITY OCCURRING IN SAID SAMPLES AT A KNOWN TEMPERATURE, WHEREBY SAID FIRST MAXIMUM ELECTRICAL CONDUCTIVITY PROVIDES A MEASURE OF THE ORIGINAL TITRATABLE ACIDITY OF EACH SAMPLE.
Claim 2
Independent Claim
92 words
THE METHOD OF OBTAINING A RELATIONSHIP BETWEEN THE TITRATABLE ACIDITY OF SPENT SULFURIC ACID ALKYLATION CATALYST AND THE ELECTRICAL CONDUCTIVITY THEREOF WHICH METHOD COMPRISES PROGRESSIVELY DILUTING A PLURALITY OF SPENT SULFURIC ALKYLATION ACID SAMPLES OF KNOWN ACIDITIES WITH WATER, THE TOTAL DILUTION OF EACH SAMPLE BEING AT LEAST GREAT ENOUGH TO CAUSE A FIRST MAXIMUM IN ELECTRICAL CONDUCTIVITY TO OCCUR THEREIN, MEASURING THE FIRST MAXIMUM ELECTRICAL CONDUCTIVITY OCCURRING IN SAID SAMPLES AT A KNOWN TEMPERATURE, WHEREBY SAID FIRST MAXIMUM ELECTRICAL CONDUCTIVITY PROVIDES A MEASURE OF THE ORIGINAL TITRATABLE ACIDITY OF EACH SAMPLE.
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |