US3535305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low temperature solvent extraction process for producing high purity zein
Assignee: Nutrilite Products Inc
•
Filing: 1968-02-12
•
Granted: 1970-10-20
•
Expires: 1988-02-12
Abstract
No abstract record available.
Inventors
- 👤 Roy Carter
- 👤 Donald Roy Reck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:26
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2272488A
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US2287649A
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US2554750A
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US2733234A
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US1884015A
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US2221560A
Cited
US2206310A
Cited
US2221561A
Cited
US2332356A
Cited
US2388389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |