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US3232898A
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Process for rendering water-insoluble melamine-formaldehyde resins watersoluble
Assignee: Wyeth Holdings LLC
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Filing: 1962-04-10
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Granted: 1966-02-01
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Expires: 1982-04-10
Abstract
No abstract record available.
Inventors
- 👤 Jr William J Van Loo
- 👤 Jason M Salsbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:41
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/30; C08G12/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A PROCESS FOR RENDERING SOLID, NORMALLY WATER-SOLUBLE, ESSENTIALLY MONOMERIC MELAMINE FORMALDEHYDE CONDENSATES CHARACTERIZED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
18 words
A PROCESS FOR RENDERING SOLID, NORMALLY WATER-SOLUBLE, ESSENTIALLY MONOMERIC MELAMINE FORMALDEHYDE CONDENSATES CHARACTERIZED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2981704A
Cited
US3087837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |