US3374607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for and method of collecting gas chromatographic fractions
Assignee: Kovalus Separation Solutions LLC
•
Filing: 1966-04-04
•
Granted: 1968-03-26
•
Expires: 1986-04-04
Abstract
No abstract record available.
Inventors
- 👤 Robert E Fisher
- 👤 James M Ryan
- 👤 Modell Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:16
CPC Classifications
B; B01; B01D; B01D15/00; B01D15/08; B01D15/10; B01D15/22; B01J; B01J20/00; B01J20/281; C; C08; C08B; C08B11/00; G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/50; G01N30/56; G01N30/60; G01N30/6004; G01N30/6017; G01N30/6052; G01N30/6069; G01N30/80; G01N30/84; B01J2220/00; B01J2220/50; B01J2220/54; G01N2030/8411; G01N30/6034
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2242299A
Cited
US3002583A
Cited
US3174326A
Cited
FR1203026A
Cited
US3046750A
Cited
US3245269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-26 | 1971-09-25 | 1972-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-26 | 1975-09-25 | 1976-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-26 | 1979-09-25 | 1980-03-26 | $7700.00 | Window Closed / Lapsed |