US3142708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing alpha, omega-dihaloalkanes
Assignee: Dow Chemical Co
•
Filing: 1961-08-15
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Granted: 1964-07-28
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Expires: 1981-08-15
Abstract
No abstract record available.
Inventors
- 👤 Young John Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:42
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/272; C07C17/278; C07C17/093; C07C17/10; C07C19/00; C07C19/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A METHOD FOR PREPARING A,W-DIHALOALKANES HAVING THE GENERAL FORMULA
Claim 2
Independent Claim
9 words
A METHOD FOR PREPARING A,W-DIHALOALKANES HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2440800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |