US2571016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of dicyclohexylamine
Assignee: Dow Chemical Co
•
Filing: 1949-05-16
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Granted: 1951-10-09
•
Expires: 1969-05-16
Abstract
No abstract record available.
Inventors
- 👤 Lester J Dankert
- 👤 Daniel A Permoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:26
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD FOR THE PRODUCTION OF DICYCLOHEXYLAMINE WHICH COMPRISES REACTING TOGETHER HYDROGEN, ANILINE AND PHENOL BY HEATING A MIXTURE OF 9 MOLECULAR EQUIVALENT OF ANILINE AND AT LEAST ONE MOLECULAR EQUIVALENT OF PHENOL TOGETHER WITH PALLADIUM AS A CATALYST AT TEMPERATURES BETWEEN 100* AND 200* C. IN CONTACT WITH HYDRGEN AT A PRESSURE OF AT LEAST 120 POUNDS PER SQUARE INCH.
Claim 2
Independent Claim
61 words
A METHOD FOR THE PRODUCTION OF DICYCLOHEXYLAMINE WHICH COMPRISES REACTING TOGETHER HYDROGEN, ANILINE AND PHENOL BY HEATING A MIXTURE OF 9 MOLECULAR EQUIVALENT OF ANILINE AND AT LEAST ONE MOLECULAR EQUIVALENT OF PHENOL TOGETHER WITH PALLADIUM AS A CATALYST AT TEMPERATURES BETWEEN 100* AND 200* C. IN CONTACT WITH HYDRGEN AT A PRESSURE OF AT LEAST 120 POUNDS PER SQUARE INCH.
References Cited (Backward Citations)
US1982985A
Cited
DE544291C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |