Patent US3106540A successfully refreshed from Google Patents.
US3106540A
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Water bearing novolac resin binders for foundry sands
Assignee: Monsanto Chemicals Ltd
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Filing: 1959-07-27
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Granted: 1963-10-08
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Expires: 1979-07-27
Abstract
No abstract record available.
Inventors
- 👤 Freedman Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:14
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/22; B22C1/2233; B22C1/2246; B22C1/2253; C; C08; C08K; C08K3/00; C08K3/01; C08K3/013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A RESIN-COATED SAND COMPRISING PARTICLES OF FOUNDRY SAND COATED WITH A MIXTURE OF (1) AN ACID-CATALYZED NOVOLAC REACTION PRODUCT OF 0.5-0.8 MOL OF FORMALDEHYDE PER MOL OF PHENOL, (2) 1-6% OF METHYL ABIETATE, BASED ON THE WEIGHT OF PHENOL, AND (3) A CROSS-LINKING AGENT FOR THE NOVOLAC RESIN.
Claim 2
Dependent Claim
48 words
A RESIN-COATED SAND COMPRISING PARTICLES OF FOUNDRY SAND COATED WITH A MIXTURE OF (1) AN ACID-CATALYZED NOVOLAC REACTION PRODUCT OF 0.5-0.8 MOL OF FORMALDEHYDE PER MOL OF PHENOL, (2) 1-6% OF METHYL ABIETATE, BASED ON THE WEIGHT OF PHENOL, AND (3) A CROSS-LINKING AGENT FOR THE NOVOLAC RESIN.
References Cited (Backward Citations)
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US2675335A
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US2510837A
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US2888418A
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US2879827A
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US2801198A
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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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |