US3930945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Urokinase production
Assignee: Abbott Laboratories
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Filing: 1975-03-31
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Granted: 1976-01-06
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Expires: 1995-03-31
Abstract
Abstract The addition of specified amounts of glycine to the production medium for urokinase using live cells increases the production of urokinase by 50 - 600%.
Inventors
- 👤 L. James Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:48
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/48; C12N9/50; C12N9/64; C12N9/6421; C12N9/6424; C12N9/6456; C12N9/6462; C12Y; C12Y304/00; C12Y304/21; C12Y304/21073
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
45 words
The process of producing urokinase from a contiguous culture of live kidney cells in an aqueous nutrient medium containing, in addition to the usual cell culture maintenance additives, between 0.3 and 1.2 parts by weight of glycine per 100 parts by volume of said nutrient.
Claim 2
Dependent Claim
45 words
The process of producing urokinase from a contiguous culture of live kidney cells in an aqueous nutrient medium containing, in addition to the usual cell culture maintenance additives, between 0.3 and 1.2 parts by weight of glycine per 100 parts by volume of said nutrient.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein said glycine is used in an amount of between 0.6 and 1.2 parts by weight.
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) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |