Patent US2844591A successfully refreshed from Google Patents.
US2844591A
Expired / Lapsed
US
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1-substituted-3-pyrrolidylmethyl benzilates and salts thereof
Assignee: Mead Johnson and Co LLC
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Filing: 1955-10-14
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Granted: 1958-07-22
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Expires: 1975-10-14
Abstract
No abstract record available.
Inventors
- 👤 Feldkamp Rolland Frederick
- 👤 Wu Yao Hua
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:30
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/04; C07D207/08; C09; C09B; C09B31/00; C09B31/02; C09B31/12; C09B31/14; C09B31/143; C09B31/147
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A MEMBER OF THE GROUP CONSISTING OF A 1-SUBSTITUTED3-PYRROLIDYLMETHYL BENZILATE HAVING THE FORMULA
Claim 2
Dependent Claim
13 words
A MEMBER OF THE GROUP CONSISTING OF A 1-SUBSTITUTED3-PYRROLIDYLMETHYL BENZILATE HAVING THE FORMULA
References Cited (Backward Citations)
US2695301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |