Patent US3151108A successfully refreshed from Google Patents.
US3151108A
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Kryptoescin and process of making same
Assignee: Astellas Deutschland GmbH
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Filing: 1960-11-18
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Granted: 1964-09-29
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Expires: 1980-11-18
Abstract
No abstract record available.
Inventors
- 👤 Bosse Joachim
- 👤 Wagner Josef
- 👤 Wojahn Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:29
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D311/00; C07D311/02; C07D311/78; C07H; C07H15/00; C07H15/20; C07H15/24; C07H15/256
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN A PROCESS OF PRODUCING KRYPTOESCIN, THE STEPS WHICH COMPRISE ADDING AN ACID TO AN AQUEOUS HORSE CHESTNUT EXTRACT FREE OF CHOLESTEROL-PRECIPITABLE SAPONINS OF HARMFUL HEMOLYTIC ACTIVITY SO AS TO ACIDIFY SAID EXTRACT TO A PH NOT EXCEEDING A PH OF 2.0, THEREBY CAUSING PRECIPITATION OF KRYPTOESCIN, AND SEPARATING THE RESULTING PRECIPITATE FROM THE EXTRACT.
Claim 2
Dependent Claim
55 words
IN A PROCESS OF PRODUCING KRYPTOESCIN, THE STEPS WHICH COMPRISE ADDING AN ACID TO AN AQUEOUS HORSE CHESTNUT EXTRACT FREE OF CHOLESTEROL-PRECIPITABLE SAPONINS OF HARMFUL HEMOLYTIC ACTIVITY SO AS TO ACIDIFY SAID EXTRACT TO A PH NOT EXCEEDING A PH OF 2.0, THEREBY CAUSING PRECIPITATION OF KRYPTOESCIN, AND SEPARATING THE RESULTING PRECIPITATE FROM THE EXTRACT.
References Cited (Backward Citations)
US2790793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |