Patent US3324174A successfully refreshed from Google Patents.
US3324174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of 1, 4-dihalobenzene derivatives
Assignee: BASF SE
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Filing: 1963-12-26
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Granted: 1967-06-06
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Expires: 1983-12-26
Abstract
No abstract record available.
Inventors
- 👤 Braun Willy
- 👤 Ruske Manfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:38
CPC Classifications
C; C07; C07C; C07C57/00; C07C57/52; C07C57/58; C07C45/00; C07C45/45; C07C45/46; C07C45/56; C07C45/57; C07C45/59; C07C49/00; C07C49/587; C07C49/687; C07C49/697
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A PROCESS FOR THE PRODUCTION OF 1,4-DIHALOBENZENE DERIVATIVES OF THE GENERAL FORMULA
Claim 2
Dependent Claim
12 words
A PROCESS FOR THE PRODUCTION OF 1,4-DIHALOBENZENE DERIVATIVES OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2587540A
Cited
DE912093C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |