US3597353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4,5,6,7-tetrahydro-benzotriazole as metal deactivator
Assignee: Novartis Corp
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Filing: 1968-07-16
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Granted: 1971-08-03
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Expires: 1988-07-16
Abstract
Abstract THE PRODUCTION OF 4,5,6,7-TETRAHYDRO-BENZOTRIAZOLE FROM BENZOTRIAZOLE BY CATALYTIC HYDROGENATION AND THE USE OF THE TETRAHYDROBENZOTRIAZOLE AS CORROSION-INHIBITING AGENT IN NOVEL COMPOSITIONS CONTAINING THE SAME IN MIXTURE WITH FUNCTIONAL MATERIALS, ESPEDIALLY MINERAL OIL, AND VARNIXHES AND LACQUERS BASED ON WHITE SPRITS, ARE DESCRIBED.
Inventors
- 👤 Donald Richard Randell
- 👤 Ernest Alfred Cox
- 👤 Alan Atkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:56
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/14; C23G1/16; C23G1/18; C10; C10M; C10M133/00; C10M133/02; C10M133/38; C10M133/44; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/28; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |