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US3478886A
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Graft-copolymer column support material for liquid-liquid partition chromatography
Assignee: United States Atomic Energy Commission
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Filing: 1967-03-31
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Granted: 1969-11-18
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Expires: 1987-03-31
Abstract
No abstract record available.
Inventors
- 👤 Robert F Hornbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:25
CPC Classifications
C; C08; C08F; C08F291/00; C08F291/18; B; B01; B01J; B01J20/00; B01J20/281; B01J20/286; B01J20/30; B01J20/32; B01J20/3202; B01J20/3206; B01J20/3208; B01J20/321; B01J20/3231; B01J20/3242; B01J20/3268; B01J20/327; B01J20/3272; B01J20/3274; B01J20/3285; B01J2220/00; B01J2220/50; B01J2220/54; B01J2220/64
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3252880A
Cited
GB845897A
Cited
US2956899A
Cited
US3298942A
Cited
US3250395A
Cited
US3279919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |