Patent US3816413A successfully refreshed from Google Patents.
US3816413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of halogen-containing v-triazole compounds
Assignee: Novartis Corp
•
Filing: 1970-06-03
•
Granted: 1974-06-11
•
Expires: 1990-06-03
Abstract
Abstract 2,4-SUBSTITUTED-5-HALOGENO-V-TRIAZOLES ARE PRODUCED BY REACTING A CORRESPONDING V-TRIAZOLE-1-OXIDE WITH HYDROGEN CHLORIDE OR HYDROGEN BROMIDE. THE TRIAVOLES ARE BRIGHTENERS FOR HIGH-MOLECULAR ORGANIC MATERIALS.
Inventors
- 👤 R Kirchmayr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:13
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/02; C07D249/04; C07D249/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |