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Patent US3331786A successfully refreshed from Google Patents.
US3331786A
Expired / Lapsed
US
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Encapsulated catalysts
Assignee: Honeywell International Inc
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Filing: 1964-07-20
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Granted: 1967-07-18
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Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Julius M Bleuenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:39
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A GRANULAR, FREE FLOWING, HOT BOX PROCESS CORE COMPOSITION ENCAPSULATED CATALYST COMPRISING ABOUT 1 PART BY WEIGHT OF AMONIUM CHLORIDE SUPPORTED ON ABOUT 5-20 PARTS BY WEIGHT OF SAND PARTICLES, SAID AMMONIUM CHLORIDE AND SAND BEING ENCAPSULATED WITH ABOUT 1-3 PARTS BY WEIGHT OF AN ENCAPSULATING MATERIAL SELECTED FROM THE GROUP CONSISTING OF STEARIC ACID AND PHENOLFORMALDEHYDE RESINS.
Claim 2
Dependent Claim
58 words
A GRANULAR, FREE FLOWING, HOT BOX PROCESS CORE COMPOSITION ENCAPSULATED CATALYST COMPRISING ABOUT 1 PART BY WEIGHT OF AMONIUM CHLORIDE SUPPORTED ON ABOUT 5-20 PARTS BY WEIGHT OF SAND PARTICLES, SAID AMMONIUM CHLORIDE AND SAND BEING ENCAPSULATED WITH ABOUT 1-3 PARTS BY WEIGHT OF AN ENCAPSULATING MATERIAL SELECTED FROM THE GROUP CONSISTING OF STEARIC ACID AND PHENOLFORMALDEHYDE RESINS.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |