Patent US2559567A successfully refreshed from Google Patents.
US2559567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing simple tertiary thenylamines
Assignee: ExxonMobil Oil Corp
•
Filing: 1947-04-09
•
Granted: 1951-07-03
•
Expires: 1967-04-09
Abstract
No abstract record available.
Inventors
- 👤 Howard D Hartough
- 👤 Sigmund J Lukasiewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:59
CPC Classifications
C; C07; C07D; C07D333/00; C07D333/02; C07D333/04; C07D333/06; C07D333/14; C07D333/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
A METHOD OF PREPARING SIMPLE TERTIARY THENYLAMINES WHICH COMPRISES MIXING (A) THIOPHENE HAVING 1 TO 3 SUBSTITUENT GROUPS ONLY ONE OF SAID SUBSTITUTENT GROUPS BEING ATTACHED TO AN ALPHA NUCLEAR CARBON ATOM AND SAID SUBSTITUENT GROUPS BEING SELECTED FROM THE GROUP CONSISTING OF ALKYL, ALKOXY AND HALOGEN, (B) ONE OF THE GROUP CONSISTING OF FORMALDEHYDE AND REVERSIBLE POLYMERS OF FORMALDEHYDE AND (C) MORE THAN A MOLAR EQUIVALENT BASED UPON THE AMOUNT OF SAID THIOPHENE OF AN AMMONIUM HALIDE AND HOLDING SAID MIXTURE AT A TEMPERATURE NOT GREATER THAN REFLUX.
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) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |