Patent US3308028A successfully refreshed from Google Patents.
US3308028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the purification of biologically active preparations
Assignee: Organon NV
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Filing: 1964-06-25
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Granted: 1967-03-07
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Expires: 1984-06-25
Abstract
No abstract record available.
Inventors
- 👤 Vries Jan Willem De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:14
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K31/715; C; C07; C07K; C07K14/00; C07K14/435; C07K14/575; C07K14/62; C07K14/625; A61K38/00; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/843; Y10S530/845; Y10S530/848
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
METHOD FOR THE DECOLOURIZATION OF A BIOLOGICALLY ACTIVE PRODUCT OBTAINED FROM THE GROUP CONSISTING OF ANIMAL TISSUES AND ANIMAL BODY FLUID COMPRISING CONTACTING AN AQUEOUS SOLUTION OF SAID PRODUCT AT A PH BETWEEN ABOUT 1 TO 8 WITH PARTICLES OF A SYNTHETIC LINEAR POLYAMIDE SELECTED FROM THE GROUP CONSISTING OF A POLYMER OBTAINED BY THE POLYMERIZATION OF A DIAMINE WITH A DIBASIC ACID, A POLYMERIZED AMINO CARBOXYLIC ACID, AND A POLYMERIZED LACTAM OF AN AMINO CARBOXYLIC ACID.
Claim 2
Dependent Claim
77 words
METHOD FOR THE DECOLOURIZATION OF A BIOLOGICALLY ACTIVE PRODUCT OBTAINED FROM THE GROUP CONSISTING OF ANIMAL TISSUES AND ANIMAL BODY FLUID COMPRISING CONTACTING AN AQUEOUS SOLUTION OF SAID PRODUCT AT A PH BETWEEN ABOUT 1 TO 8 WITH PARTICLES OF A SYNTHETIC LINEAR POLYAMIDE SELECTED FROM THE GROUP CONSISTING OF A POLYMER OBTAINED BY THE POLYMERIZATION OF A DIAMINE WITH A DIBASIC ACID, A POLYMERIZED AMINO CARBOXYLIC ACID, AND A POLYMERIZED LACTAM OF AN AMINO CARBOXYLIC ACID.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |