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US3549610A
Expired / Lapsed
US
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Method of collecting protein substances having biological activity with respect to the nervous system comprising extraction of protein from submaxillary glands with ammonium sulfate or sodium sulfate
Assignee: Individual
•
Filing: 1969-06-19
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Granted: 1970-12-22
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Expires: 1989-06-19
Abstract
No abstract record available.
Inventors
- 👤 Masaaki Yamamoto
- 👤 Tsuneyuki Nakazawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:11
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/475; A; A61; A61K; A61K38/00; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/843
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3178349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |