US2535475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urea formaldehyde resinous product
Assignee: DON GAVAN Co
•
Filing: 1945-12-14
•
Granted: 1950-12-26
•
Expires: 1965-12-14
Abstract
No abstract record available.
Inventors
- 👤 Bruce E Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:28
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/21; C08J3/212; C08J2361/00; C08J2361/20; C08J2361/22; C08J2361/24; Y; Y10; Y10S; Y10S260/00; Y10S260/47
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
53 words
A METHOD OF PREPARING A MOLDABLE PLASTIC COMPOSITION COMPRISING GRINDING A SOLID METHYLOLUREA HAVING THE LEAST POSSIBLE DEGREE OF POLYMERIZATION WITH A FILLER MATERIAL IN THE PRESENCE OF A METHYLOLUREA SOLVENT SELECTED FROM THE GROUP CONSISTING OF ETHYLENE DIAMINE, MIXTURES OF ETHYLENE DIAMINE AND ISOPROPYL ALCOHOL AND MIXTURES OF ETHYLENE DIAMINE AND WATER.
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |