Patent US3040052A successfully refreshed from Google Patents.
US3040052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of z
Assignee: —
•
Filing: —
•
Granted: 1962-06-19
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Expires: 1979-06-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:08
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/22; C07D213/60; C07D213/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A PROCESS FOR THE PRODUCTION OF CONSENSATION PRODUCTS OF PYRIDINE WHICH COMPRISES HEATING PYRIDINE AT A TEMPERATURE OF 270 TO 340* C. IN THE PRESENCE OF A HALIDE SELECTED FROM THE GROUP CONSISTING OF THE HALIDES OF ZINC, CADMIUM AND MERCURY.
Claim 2
Dependent Claim
41 words
A PROCESS FOR THE PRODUCTION OF CONSENSATION PRODUCTS OF PYRIDINE WHICH COMPRISES HEATING PYRIDINE AT A TEMPERATURE OF 270 TO 340* C. IN THE PRESENCE OF A HALIDE SELECTED FROM THE GROUP CONSISTING OF THE HALIDES OF ZINC, CADMIUM AND MERCURY.
References Cited (Backward Citations)
US2773066A
Cited
US2962502A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |