Patent US3008993A successfully refreshed from Google Patents.
US3008993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkenyl polyamines
Assignee: Monsanto Chemicals Ltd
•
Filing: 1957-02-14
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Granted: 1961-11-14
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Expires: 1977-02-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Lesslie
- 👤 Robert J O'neill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:19
CPC Classifications
A; A01; A01N; A01N33/00; A01N33/02; A01N33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A HIGHER ALKENYL POLYAMINE OF THE STRUCTURE
Claim 2
Dependent Claim
7 words
A HIGHER ALKENYL POLYAMINE OF THE STRUCTURE
References Cited (Backward Citations)
US2172822A
Cited
US2267204A
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US2267205A
Cited
US2246524A
Cited
US2244712A
Cited
GB578694A
Cited
US2844599A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-13 | 1965-05-15 | 1965-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-13 | 1969-05-15 | 1969-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-13 | 1973-05-15 | 1973-11-14 | $7700.00 | Window Closed / Lapsed |