US2250445A
Expired / Lapsed
US
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Process for producing acetylenic alcohols
Assignee: Rohm and Haas Co
•
Filing: 1938-10-01
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Granted: 1941-07-29
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Expires: 1958-10-01
Abstract
No abstract record available.
Inventors
- 👤 Herman A Bruson
- 👤 John W Kroeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:07
CPC Classifications
C; C07; C07C; C07C403/00; C07C403/24; C07C29/00; C07C29/36; C07C29/38; C07C29/42; C07C35/00; C07C35/22; C07C35/23; C07C35/28; C07C35/29; C07C2601/00; C07C2601/12; C07C2601/14; C07C2601/16; C07C2602/00; C07C2602/36; C07C2602/42
Claims Analysis
Total Claims: 0
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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) | 1944-07-28 | 1945-01-27 | 1945-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-07-28 | 1949-01-27 | 1949-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-07-28 | 1953-01-27 | 1953-07-29 | $7700.00 | Window Closed / Lapsed |