US2953534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous composition of melamine-form-aldehyde resin, polystyrene and colloidal silica, and cellulosic body impregnated therewith
Assignee: Individual
•
Filing: 1954-09-08
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Granted: 1960-09-20
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Expires: 1974-09-08
Abstract
No abstract record available.
Inventors
- 👤 Caspar C Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:34
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L61/00; C08L61/20; C08L61/26; C08L61/28; D06M11/00; D06M11/77; D06M11/79
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
AN AQUEOUS DISPERSION SUITABLE FOR IMPREGNATION OF CELLULOSIC MATERIALS WHICH CONSISTS ESSENTIALLY OF BETWEEN ABOUT 5% AND ABOUT 25% BY WEIGHT OF A MELAMINEFORMALDEHYDE RESIN IN WHICH THE RATIO OF MELAMINE TO FORMALDEHYDE IS ABOUT 1:2, BETWEEN ABOUT 0.3% AND ABOUT 14% BY WEIGHT COLLOIDAL SILICA AND BETWEEN ABOUT 3 AND ABOUT 12% BY WEIGHT POLYSTYRENE, THE BALANCE CONSISTING ESSENTIALLY OF WATER.
Claim 2
Dependent Claim
62 words
AN AQUEOUS DISPERSION SUITABLE FOR IMPREGNATION OF CELLULOSIC MATERIALS WHICH CONSISTS ESSENTIALLY OF BETWEEN ABOUT 5% AND ABOUT 25% BY WEIGHT OF A MELAMINEFORMALDEHYDE RESIN IN WHICH THE RATIO OF MELAMINE TO FORMALDEHYDE IS ABOUT 1:2, BETWEEN ABOUT 0.3% AND ABOUT 14% BY WEIGHT COLLOIDAL SILICA AND BETWEEN ABOUT 3 AND ABOUT 12% BY WEIGHT POLYSTYRENE, THE BALANCE CONSISTING ESSENTIALLY OF WATER.
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |