US2808362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of hyaluronidase
Assignee: Armour and Co
•
Filing: 1952-05-02
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Granted: 1957-10-01
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Expires: 1972-05-02
Abstract
No abstract record available.
Inventors
- 👤 William M Thompson
- 👤 Myron D Grossnickle
- 👤 Roland J Seidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:47
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/24; C12N9/2402; C12N9/2405; C12N9/2408; Y; Y10; Y10S; Y10S435/00; Y10S435/814
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
IN A PROCESS FOR PREPARING HYALURONIDASE WHEREIN TESTICULAAR TISSUE IS EXTRACTED WITH WATER TO OBTAIN A CRUDE AQUEOUS EXTRACXT OF HYALURONIDASE, THE STEP OF DIALYZING SAID CRUDE AQUEOUS EXTRACT OF HYALURONIDASE AGAINST WATER TO REMOVE THE INORGANIC BODY SALTS FROM SAID EXTRACT AND TO PRECIPITATE THE INSERT PROTEIN CONTAMINANTS THEREIN.
Claim 2
Dependent Claim
50 words
IN A PROCESS FOR PREPARING HYALURONIDASE WHEREIN TESTICULAAR TISSUE IS EXTRACTED WITH WATER TO OBTAIN A CRUDE AQUEOUS EXTRACXT OF HYALURONIDASE, THE STEP OF DIALYZING SAID CRUDE AQUEOUS EXTRACT OF HYALURONIDASE AGAINST WATER TO REMOVE THE INORGANIC BODY SALTS FROM SAID EXTRACT AND TO PRECIPITATE THE INSERT PROTEIN CONTAMINANTS THEREIN.
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) | 1960-09-30 | 1961-04-01 | 1961-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-30 | 1965-04-01 | 1965-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-30 | 1969-04-01 | 1969-10-01 | $7700.00 | Window Closed / Lapsed |