Patent US3709790A successfully refreshed from Google Patents.
US3709790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proteolytic enzyme formulation
Assignee: Swift Independent Packing Co
•
Filing: 1970-10-05
•
Granted: 1973-01-09
•
Expires: 1990-10-05
Abstract
Abstract AN IMPROVED METHOD FOR PREPARING REVERSIBLY INACTIVE PLANT DERIVED PROTEOLYTIC ENZYME SOLUTIONS FOR IN VIVO INTRAVASCULAR INJECTION WHEREIN: (1) THE PH OF THE ENZYME SOLUTIONS ARE ELEVATED TO BETWEEN ABOUT 8.0-10.0, AND (2) THE SOLUTIONS ARE TREATED WITH SUITABLE SEQUESTERING AGENTS. THESE IMPROVEMENTS PERMIT THE EFFICIENT PROCESSING OF COMMERCIAL SIZE BATCHES OF MORE CONCENTRATED ENZYME SOLUTIONS WITHOUT TREATMENT WITH OXIDIZING AGENTS.
Inventors
- 👤 J Beuk
- 👤 W Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:42
CPC Classifications
A; A61; A61K; A61K38/00; A61K38/16; A61K38/43; A61K38/46; A61K38/48; A61K38/4873; A23; A23L; A23L13/00; A23L13/70; A23L13/72; A23L13/74
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |