US2606183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aromatic diazonium fluoborate
Assignee: Dow Chemical Co
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Filing: 1949-10-03
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Granted: 1952-08-05
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Expires: 1969-10-03
Abstract
No abstract record available.
Inventors
- 👤 James D Head
- 👤 Frederick J Lowes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:55
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C08; C08B; C08B31/00; C08B31/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
A METHOD OF PRODUCING AN AROMATIC DIAZONIUM FLUOBORATE THAT COMPRISES TREATING THE CORRESPONDING PRIMARY AMINE, DISSOLVED IN AN AQUEOUS SOLUTION THAT COMPRISES FLUOBORIC ACID AND HYDROFLUORIC ACID IN SUCH RELATIVE PROPORTIONS THAT THE RATIO OF F TO B IN THE SOLUTION IS AT LEAST 4.1:1 BUT NOT GREATER THAN 5:1, WITH A NITRITE TO PRODUCE THE DIAZONIUM FLUOBORATE.
References Cited (Backward Citations)
DE600706C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-05 | 1956-02-04 | 1956-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-05 | 1960-02-04 | 1960-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-05 | 1964-02-04 | 1964-08-05 | $7700.00 | Window Closed / Lapsed |