Patent US3755448A successfully refreshed from Google Patents.
US3755448A
Expired / Lapsed
US
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N-(pentachlorobiphenyl)-diethylene triamine
Assignee: Stepan Co
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Filing: 1972-03-15
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Granted: 1973-08-28
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Expires: 1992-03-15
Abstract
Abstract MICROBIOCIDAL AMMONIA AND AMINO SUBSTITUTED HALOGENATED BIPHENYLS, AS WELL AS THE NITROGEN DERIVATIVES THEREOF SUCH AS QUATERNARY AMMONIUM COMPOUNDS, AMINE OXIDES, IMIDAZOLINES, AMIDES, ENAMINES, AMPHOLYTES, AND THE LIKE. THE AMMONIA AND AMINO HALOBIPHENYLS ARE PREPARED BY REACTING THE AMMONIA OR THE AMINE AND THE ALOBIPHENYL REACTANS IN SUCH A MANNER THAT THE RATIO OF AMINE TO HALOBIPHENYL IS PREFERABLY LIMITED TO BETWEEN TWO AND FIVE MOLS OF AMINE TO EACH MOL OF HALOBIPHENYL.
Inventors
- 👤 J Merianos
- 👤 E Shay
- 👤 P Adams
- 👤 A Petrocci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:35
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/069; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61Q; A61Q17/00; A61Q17/005; C02; C02F; C02F1/00; C02F1/50; C07C; C07C291/00; C07C291/02; C07C291/04
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |