Patent US2562159A successfully refreshed from Google Patents.
US2562159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of xylene hexafluoride
Assignee: Individual
•
Filing: 1944-11-30
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Granted: 1951-07-24
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Expires: 1964-11-30
Abstract
No abstract record available.
Inventors
- 👤 Bruno H Wojcik
- 👤 Aylmer H Maude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:01
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/206
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2156234A
Cited
US1255018A
Cited
US2038564A
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GB395227A
Cited
DE647998C
Cited
US2245028A
Cited
US2315847A
Cited
US2381405A
Cited
US2391727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-23 | 1955-01-22 | 1955-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-23 | 1959-01-22 | 1959-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-23 | 1963-01-22 | 1963-07-24 | $7700.00 | Window Closed / Lapsed |