Patent US2678328A successfully refreshed from Google Patents.
US2678328A
Expired / Lapsed
US
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Preparation of chromic salts
Assignee: ExxonMobil Oil Corp
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Filing: 1952-07-25
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Granted: 1954-05-11
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Expires: 1972-07-25
Abstract
No abstract record available.
Inventors
- 👤 Robert D Drew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:07
CPC Classifications
C; C07; C07F; C07F11/00; C07F11/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A PROCESS FOR PREPARING A CHROMIC SALT OF A LOW MOLECULAR WEIGHT FATTY ACID, WHICH COMPRISES MIXING A WATER-SOLUBLE HEXAVALENT CHROMIUM COMPOUND WITH A MONABASIC FATTY ACID HAVING NOT MORE THAN 6 CARBON ATOMS, HEATING THE RESULTING MIXTURE TO A TEMPERATURE OF AT LEAST 120* F. WITHDRAWING A STREAM OF SAID HEATED MIXTURE FROM THE BODY THEREOF AND RECYCLING SAID STREAM TO SAID BODY WHILE SLOWLY INJECTING GLYCOLIC ACID INTO THE STREAM BEING RECYCLED, THE RELATIVE RATE OF FLOW OF SAID RECYCLED STREAM BEING SUBSTANTIALLY GREATER THAN THE RATE OF FLOW OF INJECTED GLYCOLIC ACID, CONTINUING SAID RECYCLING WITH INJECTION OF GLYCOLIC ACID, AS AFORESAID, UNTIL THE ADDITION OF THE LATTER HAS BEEN COMPLETED AND THEREAFTER DIGESTING THE RESULTANT MIXTURE AT AN ELEVATED TEMPERATURE UNTIL EVOLUTION OF CARBON DIOXIDE THEREFROM HAS CEASED.
Claim 2
Dependent Claim
132 words
A PROCESS FOR PREPARING A CHROMIC SALT OF A LOW MOLECULAR WEIGHT FATTY ACID, WHICH COMPRISES MIXING A WATER-SOLUBLE HEXAVALENT CHROMIUM COMPOUND WITH A MONABASIC FATTY ACID HAVING NOT MORE THAN 6 CARBON ATOMS, HEATING THE RESULTING MIXTURE TO A TEMPERATURE OF AT LEAST 120* F. WITHDRAWING A STREAM OF SAID HEATED MIXTURE FROM THE BODY THEREOF AND RECYCLING SAID STREAM TO SAID BODY WHILE SLOWLY INJECTING GLYCOLIC ACID INTO THE STREAM BEING RECYCLED, THE RELATIVE RATE OF FLOW OF SAID RECYCLED STREAM BEING SUBSTANTIALLY GREATER THAN THE RATE OF FLOW OF INJECTED GLYCOLIC ACID, CONTINUING SAID RECYCLING WITH INJECTION OF GLYCOLIC ACID, AS AFORESAID, UNTIL THE ADDITION OF THE LATTER HAS BEEN COMPLETED AND THEREAFTER DIGESTING THE RESULTANT MIXTURE AT AN ELEVATED TEMPERATURE UNTIL EVOLUTION OF CARBON DIOXIDE THEREFROM HAS CEASED.
References Cited (Backward Citations)
US2615031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |