USRE26934E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromatographic separation of substances of different molec- ular weight
Assignee: —
•
Filing: 1968-07-01
•
Granted: 1970-08-18
•
Expires: 1988-07-01
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:28
CPC Classifications
B; B01; B01D; B01D15/00; B01D15/08; B01D15/26; B01D15/36; B01D15/361; B01D15/34; B01J; B01J20/00; B01J20/281; B01J20/282; B01J20/285; B01J20/291; B01J39/00; B01J39/26; C; C08; C08F; C08F291/00; C08F36/00; C08F36/02; C08F36/20; B01D15/10; B01D15/20
Claims Analysis
Total Claims: 0
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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) | 1973-08-17 | 1974-02-16 | 1974-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-17 | 1978-02-16 | 1978-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-17 | 1982-02-16 | 1982-08-18 | $7700.00 | Window Closed / Lapsed |