Patent US2978425A successfully refreshed from Google Patents.
US2978425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating compositions containing modified urea resins
Assignee: Monsanto Chemicals Ltd
•
Filing: 1957-12-05
•
Granted: 1961-04-04
•
Expires: 1977-12-05
Abstract
No abstract record available.
Inventors
- 👤 Harry M Culbertson
- 👤 Frank J Hahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:01
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/34; C08G12/36; C08G12/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A RESIN COMPRISING AN ETHERIFIED REACTION PRODUCT OF AT LEAST 2 MOLS OF A MONOHYDRIC ACYCLIC ALCOHOL CONTAINING 1-6 CARBON ATOMS AND A CO-CONDENSATION PRODUCT OF 1 MOL OF UREA, 0-0.3 MOL OF MELAMINE, 0.02-0.5 MOL OF AN N-SUBSTITUTED MELAMINE AND AT LEAST 2 MOLS OF FORMALDEHYDE; SAID N-SUBSTITUTED MELAMINE BEING SELECTED FROM THE GROUP CONSISTING OF N,N''-DIALKYLMELAMINES, N,N'',N"-TRIALKYLMELAMINES AND MIXTURES THEREOF, THE INDIVIDUAL ALKYL GROUPS OF SAID N-SUBSTITUTED MELAMINES BEING ACYCLIC AND CONTAINING A MAXIMUM OF ABOUT 20 CARBON ATOMS, THE TOTAL NUMBER OF CARBON ATOMS CONTAINED IN ALL OF SAID ALKYL GROUPS NOT EXCEEDING ABOUT 36.
Claim 2
Dependent Claim
98 words
A RESIN COMPRISING AN ETHERIFIED REACTION PRODUCT OF AT LEAST 2 MOLS OF A MONOHYDRIC ACYCLIC ALCOHOL CONTAINING 1-6 CARBON ATOMS AND A CO-CONDENSATION PRODUCT OF 1 MOL OF UREA, 0-0.3 MOL OF MELAMINE, 0.02-0.5 MOL OF AN N-SUBSTITUTED MELAMINE AND AT LEAST 2 MOLS OF FORMALDEHYDE; SAID N-SUBSTITUTED MELAMINE BEING SELECTED FROM THE GROUP CONSISTING OF N,N''-DIALKYLMELAMINES, N,N'',N"-TRIALKYLMELAMINES AND MIXTURES THEREOF, THE INDIVIDUAL ALKYL GROUPS OF SAID N-SUBSTITUTED MELAMINES BEING ACYCLIC AND CONTAINING A MAXIMUM OF ABOUT 20 CARBON ATOMS, THE TOTAL NUMBER OF CARBON ATOMS CONTAINED IN ALL OF SAID ALKYL GROUPS NOT EXCEEDING ABOUT 36.
References Cited (Backward Citations)
US2197357A
Cited
US2294590A
Cited
US2454495A
Cited
US2209292A
Cited
US2320818A
Cited
US2339622A
Cited
US2361823A
Cited
US2485059A
Cited
US2809954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |