US2700042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of pyridine and beta picoline
Assignee: Individual
•
Filing: 1952-08-30
•
Granted: 1955-01-18
•
Expires: 1972-08-30
Abstract
No abstract record available.
Inventors
- 👤 Robert S Aries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:56
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
THE PROCESS WHICH COMPRISES REACTING AMMONIA AND A VAPORIZED MIXTURE OF TRIOXANE AND PARALDEHYDE IN THE PRESENCE OF A MIXTURE OF ALUMINA AND SILICA GEL AS CATALYST, AND AT A TEMPERATURE OF FROM ABOUT 350* C. TO ABOUT 500* C., TO FORM A MIXTURE OF PYRIDINE BASES.
Claim 2
Dependent Claim
47 words
THE PROCESS WHICH COMPRISES REACTING AMMONIA AND A VAPORIZED MIXTURE OF TRIOXANE AND PARALDEHYDE IN THE PRESENCE OF A MIXTURE OF ALUMINA AND SILICA GEL AS CATALYST, AND AT A TEMPERATURE OF FROM ABOUT 350* C. TO ABOUT 500* C., TO FORM A MIXTURE OF PYRIDINE BASES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-17 | 1958-07-19 | 1959-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-17 | 1962-07-19 | 1963-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-17 | 1966-07-19 | 1967-01-18 | $7700.00 | Window Closed / Lapsed |