US3819670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(bis(2-hydroxypropyl)-nitriloethylene)-5-arsa-1-aza-4,6-dioxacyclooctyl arsenic ether
Assignee: Koppers Inc
•
Filing: 1973-07-16
•
Granted: 1974-06-25
•
Expires: 1993-07-16
Abstract
Abstract A WOOD PRESERVATIVE COMPOSITION COMPRISED OF CREOSOTE IN WHICH IS DISSOLVED THE NOVEL ARSENIC-CONTAINING COMPOUND 1-(BIS(2-HYDROXYPROPYL)NITRILOETHYLENE)-5-ARSA-1AZA-4,6-DIOXACYCLOOCTYL AS-ETHER WHOSE STRUCTURE IS (4,8-DI(CH3-),6-((HO-CH(-CH3)-CH2-)2-N-CH2-CH2-)- TETRAHYDRO-1,3,6,2-DIOXAZARSOCIN-2-YL)2-O
Inventors
- 👤 W Kemp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:19
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/66; C07F9/68
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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |