US2855439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted alpha-chloro-isobutyro-phenones
Assignee: Dow Chemical Co
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Filing: 1956-02-02
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Granted: 1958-10-07
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Expires: 1976-02-02
Abstract
No abstract record available.
Inventors
- 👤 Donald G Kundiger
- 👤 Ernest A Ikenberry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:57
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/45; C07C45/46; C07C49/00; C07C49/76; C07C49/80; C07C49/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
SUBSTITUTED A-CHLORO-ISOBUTYRO-PHENONES HAVING THE FORMULA:
Claim 2
Dependent Claim
5 words
SUBSTITUTED A-CHLORO-ISOBUTYRO-PHENONES HAVING THE FORMULA:
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) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |