Patent US3248398A successfully refreshed from Google Patents.
US3248398A
Expired / Lapsed
US
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Substituted ureas
Assignee: Bayer AG
•
Filing: 1962-01-03
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Granted: 1966-04-26
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Expires: 1982-01-03
Abstract
No abstract record available.
Inventors
- 👤 Muhlbauer Ernst
- 👤 Theuer Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:49
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/07; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/432
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
AS A COMPOSITION OF MATTER, A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
10 words
AS A COMPOSITION OF MATTER, A COMPOUND HAVING 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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |