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US2929848A
Expired / Lapsed
US
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3, 4-dihydroxyphenyl isopropyl ketone
Assignee: Pharmacia and Upjohn Co
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Filing: 1957-10-11
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Granted: 1960-03-22
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Expires: 1977-10-11
Abstract
No abstract record available.
Inventors
- 👤 Eugene H Woodruff
- 👤 Patrick H Seay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:17
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/76; C07C49/82; C07C49/825; C07C45/00; C07C45/45; C07C45/46; C07C45/51; C07C45/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2078205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |