US2750385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of tetrahydro-pyridines from tetrahydro-1, 3-oxazines
Assignee: Rohm and Haas Co
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Filing: 1954-05-21
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Granted: 1956-06-12
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Expires: 1974-05-21
Abstract
No abstract record available.
Inventors
- 👤 Claude J Schmidle
- 👤 Richard C Mansfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:01
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/68; C07D211/70; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06; C23G1/063
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
10 words
A PROCESS WHICH COMPRISES HEATING A TETRAHYDRO-1,3OXAZINE OF THE STRUCTURE
References Cited (Backward Citations)
US2647117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |