US3081277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amino-aldehyde molding resins modified with polyacrylamide or methylol polyacrylamide
Assignee: Wyeth Holdings LLC
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Filing: 1962-02-28
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Granted: 1963-03-12
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Expires: 1982-02-28
Abstract
No abstract record available.
Inventors
- 👤 Henry P Wohnsiedler
- 👤 Richard H Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/24; C08L33/26; C08L61/00; C08L61/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A MOLDING AND LAMINATING COMPOSITION WHICH COMPRISES IN THERMOSETTING, SUBSTANTIALLY HOMOGENEOUS BLEND OF: (A) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYACRYLAMIDE AND METHYLOL POLYACRYLAMIDE, AND (B) A HEAT-CURABLE RESIN PREPARED BY CONDENSING FORMALDEHYDE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MELAMINE, BENZOGUANAMINE AND UREA, THE WEIGHT RATIO OF SAID (A) TO SAID (B) BEING FROM ABOUT 1:99 TO 45:55, RESPECTIVELY.
Claim 2
Dependent Claim
64 words
A MOLDING AND LAMINATING COMPOSITION WHICH COMPRISES IN THERMOSETTING, SUBSTANTIALLY HOMOGENEOUS BLEND OF: (A) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYACRYLAMIDE AND METHYLOL POLYACRYLAMIDE, AND (B) A HEAT-CURABLE RESIN PREPARED BY CONDENSING FORMALDEHYDE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MELAMINE, BENZOGUANAMINE AND UREA, THE WEIGHT RATIO OF SAID (A) TO SAID (B) BEING FROM ABOUT 1:99 TO 45:55, RESPECTIVELY.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |