Patent US2445526A successfully refreshed from Google Patents.
US2445526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation of hexachlorethane
Assignee: Dow Chemical Co
•
Filing: 1944-10-10
•
Granted: 1948-07-20
•
Expires: 1964-10-10
Abstract
No abstract record available.
Inventors
- 👤 Robert G Heitz
- 👤 Charles F Oldershaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:07
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/383; Y; Y10; Y10S; Y10S159/00; Y10S159/23
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US896435A
Cited
US1468377A
Cited
US1382890A
Cited
US1445004A
Cited
US1800371A
Cited
US2037419A
Cited
US2034292A
Cited
US2204364A
Cited
US2341258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |