US2764573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation products of glyoxal monourein and aldehydes
Assignee: BASF SE
•
Filing: 1952-08-16
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Granted: 1956-09-25
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Expires: 1972-08-16
Abstract
No abstract record available.
Inventors
- 👤 Bruno V Reibnitz
- 👤 Alfred Woerner
- 👤 Hans Scheuermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:37
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
44 words
A PROCESS FOR THE PRODUCTION OF NITROGENOUS CONDENSATION PRODUCTS WHICH COMPRISES CONDENSING IN AN AQUEOUS MEDIUM GLYOXAL AMONOUREIN WITH FORMALDEHYDE IN A MOLECULAR RATIO FROM 1:1 TO 1:2.5, WHEREIN THE CONDENSATION IS CARRIED OUT AT LEAST IN THE FINAL STAGE IN AN ACID MEDIUM.
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) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |