US3210371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing imidazolines or bisimidazolines
Assignee: Teijin Ltd
•
Filing: 1962-05-28
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Granted: 1965-10-05
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Expires: 1982-05-28
Abstract
No abstract record available.
Inventors
- 👤 Sawa Natsuo
- 👤 Nagai Kazuhiro
- 👤 Kishizoe Shigeru
- 👤 Tsujiuo Yoichi
- 👤 Kuriyama Mitsumasa
- 👤 Shimamura Tadao
- 👤 Prefecture Tokushima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:54
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/22; D06P5/225; C; C07; C07D; C07D233/00; C07D233/04; C07D233/06; C08; C08F; C08F8/00; D06M; D06M13/00; D06M13/322; D06M13/325; D06M13/332; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/645; D06P3/00; D06P3/70; D06P3/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR SYNTHESIZING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF IMIDAZOLINE AND BISIMIDAZOLINE, CHARACTERIZED IN THAT A 1,2-DIAMINE SELECTED FROM THE GROUP CONSISTING OF ETHYLENEDIAMINE AND 1,2-DIAMINOPROPANE IS REACTED WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACETONITRILE, PROPIONITRILE, BENZONITRILE, ADIPONITRILE, 1,3-DICYANOBENZENE AND 1,4-DICYANOBENZENE IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTIN OF ELEMENTARY SULFUR AND A SULFUR-LIBERATIN SULFUR COMPOUND, AND THE AMOUNT OF THE CATALYST IS AT LEAST 0.9% BY WEIHT OF THE WEIGHT OF 1,2-DIAMINE.
Claim 2
Dependent Claim
83 words
A PROCESS FOR SYNTHESIZING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF IMIDAZOLINE AND BISIMIDAZOLINE, CHARACTERIZED IN THAT A 1,2-DIAMINE SELECTED FROM THE GROUP CONSISTING OF ETHYLENEDIAMINE AND 1,2-DIAMINOPROPANE IS REACTED WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACETONITRILE, PROPIONITRILE, BENZONITRILE, ADIPONITRILE, 1,3-DICYANOBENZENE AND 1,4-DICYANOBENZENE IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTIN OF ELEMENTARY SULFUR AND A SULFUR-LIBERATIN SULFUR COMPOUND, AND THE AMOUNT OF THE CATALYST IS AT LEAST 0.9% BY WEIHT OF THE WEIGHT OF 1,2-DIAMINE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |