Patent US3826770A successfully refreshed from Google Patents.
US3826770A
Expired / Lapsed
US
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Stabilized mixture of urea formaldehyde and methylolureas
Assignee: Chembond Corp
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Filing: 1972-03-13
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Granted: 1974-07-30
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Expires: 1992-03-13
Abstract
Abstract A METHOD OF MAKING A STORAGE STABILIZED AQUEOUS SOLUTION OF UREA, FORMALDEHYDE, AND NONPOLYMERIC ADDITION PRODUCTS THEREOF. THE SOLUTION IS STABILIZED TO INHIBIT THE CRYSTALLIZATION OF METHYLOLUREAS BY THE INCLUSION OF A DISSOLVED, IONIZED, INORGANIC SALT. A METHOD OF MAKING A CONSOLIDATED PRODUCT FROM THE STABILIZED SOLUTION IS ALSO DISCLOSED.
Inventors
- 👤 R Christensen
- 👤 P Robitschek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:40
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/10; C08G12/12; C07; C07C; C07C273/00; C07C273/02; C07C273/14; C07C273/18; C07C273/189
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |