US3275505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing a biocidal composition comprising halogenated levulinic acid
Assignee: Fort James Corp
•
Filing: 1964-11-23
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Granted: 1966-09-27
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Expires: 1984-11-23
Abstract
No abstract record available.
Inventors
- 👤 Robert J Herschler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:41
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR PREPARING A BIOCIDAL COMPOSITION HAVING A BROAD SPECTRUM OF ACTIVITY FOR CONTROLLING MICROORGANISMS COMPRISING, HYDROLYZING AN HEXOSE-YIELDING MATERIAL BY CONTACTING SAID MATERIAL WITH A WATER SOLUTION OF AN ACID CATALYST, SEPARATING THE INSOLUBLE SOLIDS FROM THE LIQUOR THUS FORMED, SEPARATING THE CATALYST FROM SAID LIQUOR, STRIPPING THE READILY VOLATILE CONSTITUENTS FROM SAID LIQUOR AND REMOVING A PORTION OF THE WATER FROM SAID LIQUOR WITHOUT REMOVING A MAJOR PORTION OF THE HIGH BOILING SOLUBLE CONSTITUENTS, TO ISOLATE A CONCENTRATED PRODUCT CONTACTING, PREDOMINATELY, LEVULINIC ACID AND A MINOR AMOUNT OF LACTONES AND OTHER LOW-VOLATILE, SOLUBLE COMPOUNDS, AND HALOGENATING SAID PRODUCT WITH A HALOGEN FROM THE GROUP CONSISTING OF BROMINE AND CHLORINE TO PRODUCE THE BIOCIDAL COMPOSITION.
Claim 2
Dependent Claim
117 words
A PROCESS FOR PREPARING A BIOCIDAL COMPOSITION HAVING A BROAD SPECTRUM OF ACTIVITY FOR CONTROLLING MICROORGANISMS COMPRISING, HYDROLYZING AN HEXOSE-YIELDING MATERIAL BY CONTACTING SAID MATERIAL WITH A WATER SOLUTION OF AN ACID CATALYST, SEPARATING THE INSOLUBLE SOLIDS FROM THE LIQUOR THUS FORMED, SEPARATING THE CATALYST FROM SAID LIQUOR, STRIPPING THE READILY VOLATILE CONSTITUENTS FROM SAID LIQUOR AND REMOVING A PORTION OF THE WATER FROM SAID LIQUOR WITHOUT REMOVING A MAJOR PORTION OF THE HIGH BOILING SOLUBLE CONSTITUENTS, TO ISOLATE A CONCENTRATED PRODUCT CONTACTING, PREDOMINATELY, LEVULINIC ACID AND A MINOR AMOUNT OF LACTONES AND OTHER LOW-VOLATILE, SOLUBLE COMPOUNDS, AND HALOGENATING SAID PRODUCT WITH A HALOGEN FROM THE GROUP CONSISTING OF BROMINE AND CHLORINE TO PRODUCE THE BIOCIDAL COMPOSITION.
References Cited (Backward Citations)
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Cited
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Cited
US2738367A
Cited
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Cited
US2840605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |