US2523477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapidly curing thermosetting aminoplastic compositions
Assignee: Wyeth Holdings LLC
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Filing: 1946-06-28
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Granted: 1950-09-26
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Expires: 1966-06-28
Abstract
No abstract record available.
Inventors
- 👤 Daniel E Nagy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:40
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A STABLE, RAPIDLY CURING COMPOSITION COMPRISING A FUSIBLE, THERMOSETTING AMINO FORMALDEHYDE RESIN SELECTED FROM THE GROUP CONSISTING OF UREA-FORMALDEHYDE AND MELAMINE-FORMALDEHYDE, AND AN ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED ACYL GUANYLUREA SALTS AND UNSUBSTITUTED ACYL CARBAMYL GUANIDINE SALTS WHEREIN SAID ACYL GROUP IS DERIVED FROM AN ORGANIC ACID HAVING A DISSOCIATION CONSTANT NOT GREATER THAN 10**-5.
Claim 2
Dependent Claim
58 words
A STABLE, RAPIDLY CURING COMPOSITION COMPRISING A FUSIBLE, THERMOSETTING AMINO FORMALDEHYDE RESIN SELECTED FROM THE GROUP CONSISTING OF UREA-FORMALDEHYDE AND MELAMINE-FORMALDEHYDE, AND AN ACCELERATOR SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED ACYL GUANYLUREA SALTS AND UNSUBSTITUTED ACYL CARBAMYL GUANIDINE SALTS WHEREIN SAID ACYL GROUP IS DERIVED FROM AN ORGANIC ACID HAVING A DISSOCIATION CONSTANT NOT GREATER THAN 10**-5.
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) | 1953-09-25 | 1954-03-27 | 1954-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-25 | 1958-03-27 | 1958-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-25 | 1962-03-27 | 1962-09-26 | $7700.00 | Window Closed / Lapsed |