US3449316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the purification of gamma globulin employing bentonite
Assignee: Wyeth Holdings LLC
•
Filing: 1967-03-03
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Granted: 1969-06-10
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Expires: 1987-03-03
Abstract
No abstract record available.
Inventors
- 👤 Merle Vernon Querry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:02
CPC Classifications
C; C07; C07K; C07K16/00; C07K16/06; C07K16/065; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/85; Y10S530/851
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) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |