US2440729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble heavy metal salts of thiosorbitol and other monothio sugar alcohols
Assignee: EIDP Inc
•
Filing: 1944-03-25
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Granted: 1948-05-04
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Expires: 1964-03-25
Abstract
No abstract record available.
Inventors
- 👤 Signaigo Frank Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:37
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0215; B01J31/0228; B01J31/0201; B01J31/0202; B01J31/0217; C; C07; C07H; C07H23/00; B01J2231/00; B01J2231/30; B01J2231/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-05-04 | 1951-11-03 | 1952-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-05-04 | 1955-11-03 | 1956-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-05-04 | 1959-11-03 | 1960-05-04 | $7700.00 | Window Closed / Lapsed |