Patent GB410055A successfully refreshed from Google Patents.
US2897123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasminogen sterilization
Assignee: Ortho Pharmaceutical Corp
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Filing: 1956-09-21
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Granted: 1959-07-28
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Expires: 1976-09-21
Abstract
No abstract record available.
Inventors
- 👤 Heron O Singher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:33
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/48; C12N9/50; C12N9/64; C12N9/6421; C12N9/6424; C12N9/6435; C12Y; C12Y304/00; C12Y304/21; C12Y304/21007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A METHOD OF TREATING PLASMINOGEN WHICH COMPRISES HEAT-TREATING AT A TEMPERATURE OF ABOUT 60* C. FOR ABOUT 10 HOURS AN AQUEOUS SOLUTION OF PLASMINOGEN HAVING A PH NOT LESS THAN 3 AND NOT GREATER THAN 6.5, AND AN IONIC STRENGTH NOT GREATER THAN 0.3.
Claim 2
Independent Claim
44 words
A METHOD OF TREATING PLASMINOGEN WHICH COMPRISES HEAT-TREATING AT A TEMPERATURE OF ABOUT 60* C. FOR ABOUT 10 HOURS AN AQUEOUS SOLUTION OF PLASMINOGEN HAVING A PH NOT LESS THAN 3 AND NOT GREATER THAN 6.5, AND AN IONIC STRENGTH NOT GREATER THAN 0.3.
References Cited (Backward Citations)
US2469193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |