Patent CH239662A successfully refreshed from Google Patents.
US3434992A
Expired / Lapsed
US
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Binder composition comprising a mixture of a barium hydroxide catalyzed phenol-formaldehyde resole and a melamine formaldehyde condensate
Assignee: Casco AB
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Filing: 1965-08-23
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Granted: 1969-03-25
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Expires: 1985-08-23
Abstract
No abstract record available.
Inventors
- 👤 Ulrich Holtschmidt
- 👤 Alfred Michel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:14
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/04; C08G8/08; B; B29; B29C; B29C66/00; B29C66/70; B29C66/71; C08L; C08L61/00; C08L61/34; D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/48; D21H17/49; D21H17/51; B29C66/73; B29C66/737; B29C66/7379; B29C66/73793
Claims Analysis
Total Claims: 0
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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) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |