US3423467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable aqueous formaldehyde solutions and a process for preparing them
Assignee: Montedison SpA
•
Filing: 1964-10-27
•
Granted: 1969-01-21
•
Expires: 1984-10-27
Abstract
No abstract record available.
Inventors
- 👤 Ibrahim Dakli
- 👤 Busto Arsizio
- 👤 Nazareno Lupi
- 👤 Marcello Morini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:13
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/78; C07C45/86
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
AN AQUEOUS FORMALDEHYDE SOLUTION WHICH IS FREE OF PRECIPITATE AT LOWER TEMPERATURES FOR LONGER STORAGE TIMES AT HIGHER CH2O CENCENTRATION, SAID SOLUTION CONTAINING AS STABILIZER AN AMINO-1,3,5-TRIAZINE OF THE FORMULA:
Claim 2
Dependent Claim
30 words
AN AQUEOUS FORMALDEHYDE SOLUTION WHICH IS FREE OF PRECIPITATE AT LOWER TEMPERATURES FOR LONGER STORAGE TIMES AT HIGHER CH2O CENCENTRATION, SAID SOLUTION CONTAINING AS STABILIZER AN AMINO-1,3,5-TRIAZINE OF THE FORMULA:
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) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |