US3547900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separating protein from aqueous solutions containing dissolved material of lower molecular weight using a thin bed of molecular sieve material
Assignee: Individual
•
Filing: 1969-03-18
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Granted: 1970-12-15
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Expires: 1989-03-18
Abstract
No abstract record available.
Inventors
- 👤 Carl S Dienst
- 👤 Jerry M Attebery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:00
CPC Classifications
A; A23; A23C; A23C9/00; A23C9/14; A23C9/148; A23J; A23J1/00; A23J1/06; A23J1/14; A23J1/20; A23J1/205; B; B01; B01D; B01D15/00; B01D15/08; B01D15/26; B01D15/34; A23V; A23V2002/00; Y; Y10; Y10S; Y10S530/00; Y10S530/82; Y10S530/823; Y10S530/824; Y10S530/827; Y10S530/832; Y10S530/833
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) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |