US2629733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-oxyalkyl-p-aminobenzoates
Assignee: Pharmacia and Upjohn Co
•
Filing: 1948-07-31
•
Granted: 1953-02-24
•
Expires: 1968-07-31
Abstract
No abstract record available.
Inventors
- 👤 David I Weisblat
- 👤 Barney J Magerlein
- 👤 Donald R Myers
- 👤 Stanley T Rolfson
- 👤 Arthur R Hanze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:43
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
5 words
A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US610348A
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US2443165A
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US2472482A
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US647263A
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GB128552A
Cited
US1977253A
Cited
US2442836A
Cited
US2457109A
Cited
US2476360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |