US2417809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amine salts of polychloro-2-hydroxy-diphenyl
Assignee: Dow Chemical Co
•
Filing: 1941-10-24
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Granted: 1947-03-25
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Expires: 1961-10-24
Abstract
No abstract record available.
Inventors
- 👤 Gerald H Coleman
- 👤 Wesley D Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:50
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/62; C07C211/00; C07C211/62; C07C211/63; C07C39/00; C07C39/24; C07C39/367; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1919298A
Cited
DE609164C
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US1940817A
Cited
US1852820A
Cited
US1852787A
Cited
US1992577A
Cited
US2222486A
Cited
US2189420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-24 | 1950-09-23 | 1951-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-24 | 1954-09-23 | 1955-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-24 | 1958-09-23 | 1959-03-25 | $7700.00 | Window Closed / Lapsed |