Patent US2723293A successfully refreshed from Google Patents.
US2723293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-lower alkoxy-2-ethylbutyrylurea and method of preparing same
Assignee: Bayer Corp
•
Filing: 1954-02-24
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Granted: 1955-11-08
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Expires: 1974-02-24
Abstract
No abstract record available.
Inventors
- 👤 Otis E Fancher
- 👤 Dale A Stauffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:48
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/46; C07C275/48; C07C275/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A 2-ALKOXY-2-ETHYLBUTYRYLUREA HAVING THE FORMULA
Claim 2
Dependent Claim
5 words
A 2-ALKOXY-2-ETHYLBUTYRYLUREA HAVING THE FORMULA
Claim 3
Independent Claim
21 words
A METHOD OF PRODUCING A 2-ALKOXY-2-ETHYLBUTYRYLUREA WHICH COMPRISES REACTING A 2-HALO-2-ETHYLBUTYRYLUREA WITH AN ALKALI METAL ALCOHOLATE PREPARED FROM A LOWER ALKANOL.
Claim 4
Independent Claim
21 words
A METHOD OF PRODUCING A 2-ALKOXY-2-ETHYLBUTYRYLUREA WHICH COMPRISES REACTING A 2-HALO-2-ETHYLBUTYRYLUREA WITH AN ALKALI METAL ALCOHOLATE PREPARED FROM A LOWER ALKANOL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |