Patent US4080441A successfully refreshed from Google Patents.
Patent US3418334A successfully refreshed from Google Patents.
US3418334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of substituted parabanic acids
Assignee: Monsanto Co
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Filing: 1963-10-25
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Granted: 1968-12-24
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Expires: 1983-10-25
Abstract
No abstract record available.
Inventors
- 👤 Paul J Stoffel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:40
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/96
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
9 words
THE METHOD OF PREPARING A COMPOUND OF THE STRUCTURE:
Claim 2
Independent Claim
9 words
THE METHOD OF PREPARING A COMPOUND OF THE STRUCTURE:
Claim 3
Independent Claim
9 words
THE METHOD OF PERPARING A COMPOUND OF THE STRUCTURE:
Claim 4
Independent Claim
9 words
THE METHOD OF PERPARING A COMPOUND OF THE STRUCTURE:
Claim 5
Independent Claim
9 words
A METHOD OF PREPARING A COMPOUND OF THE STRUCTURE:
Claim 6
Independent Claim
9 words
A METHOD OF PREPARING A COMPOUND OF THE STRUCTURE:
References Cited (Backward Citations)
US2463986A
Cited
US2895817A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |