US3210203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding sand
Assignee: NL Industries Inc
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Filing: 1962-12-20
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Granted: 1965-10-05
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Expires: 1982-12-20
Abstract
No abstract record available.
Inventors
- 👤 Jack C Cowan
- 👤 Hugh G Gainey
- 👤 Iii Harvey M Oyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:15
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A MOLDING SAND COMPOSITION, COMPRISING SAND, AND A BINDER CONSISTING ESSENTIALLY OF ALKYL AMMONIUM HUMATE, SAID ALKYL HAVING FROM 14 TO 22 CARBON ATOMS IN A STRAIGHT CHAIN, TOGETHER WITH FROM ZERO TO FOUR PARTS OF ORGANOPHILIC CLAY CHOSEN FROM THE GROUP WHICH CONSISTS OF ORGANOPHILIC MONTMORILLONITE AND ORGANOPHILIC ATTAPULGITE FOR EACH PART OF SAID ALKYL AMMONIUM HUMATE, AND AN ORGANIC LIQUID CONSISTING OF FROM 25% TO 100% BY WEIGHT OF A LIQUID PHOSPHATE ESTER CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
79 words
A MOLDING SAND COMPOSITION, COMPRISING SAND, AND A BINDER CONSISTING ESSENTIALLY OF ALKYL AMMONIUM HUMATE, SAID ALKYL HAVING FROM 14 TO 22 CARBON ATOMS IN A STRAIGHT CHAIN, TOGETHER WITH FROM ZERO TO FOUR PARTS OF ORGANOPHILIC CLAY CHOSEN FROM THE GROUP WHICH CONSISTS OF ORGANOPHILIC MONTMORILLONITE AND ORGANOPHILIC ATTAPULGITE FOR EACH PART OF SAID ALKYL AMMONIUM HUMATE, AND AN ORGANIC LIQUID CONSISTING OF FROM 25% TO 100% BY WEIGHT OF A LIQUID PHOSPHATE ESTER CORRESPONDING TO THE FORMULA
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |