Patent US3713897A successfully refreshed from Google Patents.
Patent US2748140A successfully refreshed from Google Patents.
US2748140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-hydroxymethyl-4-phenyltetrahydro-pyridines and their esters
Assignee: Rohm and Haas Co
•
Filing: 1954-10-07
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Granted: 1956-05-29
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Expires: 1974-10-07
Abstract
No abstract record available.
Inventors
- 👤 Claude J Schmidle
- 👤 Richard C Mansfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:50
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/68; C07D211/70; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE STRUCTURE
Claim 2
Dependent Claim
4 words
COMPOUNDS OF THE STRUCTURE
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) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |