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US2556334A
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Process for the manufacture of a novel binding agent for core sand from sulfite lye
Assignee: Oel und Chemie Werk AG
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Filing: 1948-02-11
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Granted: 1951-06-12
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Expires: 1968-02-11
Abstract
No abstract record available.
Inventors
- 👤 Moser Franz Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:35
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS OF PRODUCING A BINDING AGENT FOR FOUNDERS CORE SAND FROM SULFITE LYE, COMPRISING ADDING TO THE SULFITE LYE AN AMMONIUM SALT OF A MINERAL ACID IN AN AMOUNT WHICH UPON DISSOCIATION IS IN EXCESS OF THE AMOUNT NECASSARY TO NEUTRALIZE THE BASIC INGREDIENTS PRESENT IN SAID LYE AND BRINGS ABOUT CARBONIZATION OF THE SULFITE LYE AT THE ELEVATED TEMPERATURES USUALLY APPLIED IN BAKING SAND CORES.
Claim 2
Dependent Claim
67 words
A PROCESS OF PRODUCING A BINDING AGENT FOR FOUNDERS CORE SAND FROM SULFITE LYE, COMPRISING ADDING TO THE SULFITE LYE AN AMMONIUM SALT OF A MINERAL ACID IN AN AMOUNT WHICH UPON DISSOCIATION IS IN EXCESS OF THE AMOUNT NECASSARY TO NEUTRALIZE THE BASIC INGREDIENTS PRESENT IN SAID LYE AND BRINGS ABOUT CARBONIZATION OF THE SULFITE LYE AT THE ELEVATED TEMPERATURES USUALLY APPLIED IN BAKING SAND CORES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |