Patent US3819709A successfully refreshed from Google Patents.
US3819709A
Expired / Lapsed
US
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Synthesis of n-methylaniline
Assignee: New Japan Chemical Co Ltd
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Filing: 1970-12-09
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Granted: 1974-06-25
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Expires: 1990-12-09
Abstract
Abstract A METHOD OF MANUFACTURING N-METHYLANILINE BY REACTING ANILINE WITH METHANOL. THE REACTION IS CONDUCTED IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF (A) COPPER AND (B) A CHROMIUM CATALYST HAVING THE FORMULA CR.ME1.ME2.O WHEREIN ME1 IS CU, ZN, FE, OR NI AND ME2 IS BA, CA, MG OR MN, CR BEING CONTAINED IN THE RANGE OF 20 TO 80 WEIGHT PERCENT, ME1 BEING CONTAINED IN THE RANGE OF 20 TO 80 WEIGHT PERCENT AND ME2 BEING CONTAINED IN THE RANGE OF 0 TO 5 WEIGHT PERCENT, BASED ON THE TOTAL WEIGHT OF SAID METALS RESPECTIVELY.
Inventors
- 👤 K Murai
- 👤 G Akazome
- 👤 T Kyuma
- 👤 M Nakazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:40
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/86; B01J23/868; B01J23/889; B01J23/8892; B01J37/00; B01J37/02; B01J37/03; B01J37/031; C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/18
Claims Analysis
Total Claims: 0
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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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |