Patent US932395A successfully refreshed from Google Patents.
US2901398A
Expired / Lapsed
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Ion-exchange purification of allergenic pollen component
Assignee: Mount Sinai Hospital Research Foundation Inc
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Filing: 1952-06-19
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Granted: 1959-08-25
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Expires: 1972-06-19
Abstract
No abstract record available.
Inventors
- 👤 Perlman Ely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:01
CPC Classifications
A; A61; A61K; A61K39/00; A61K39/35; A61K39/36; B; B01; B01J; B01J47/00; B01J47/02; B01J47/04; Y; Y10; Y10S; Y10S530/00; Y10S530/806
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A METHOD FOR RECOVERING AN ACTIVE POLLEN COMPONENT, THE STEP OF MIXING AN UNDEGRADED POLLEN SOLUTION WITH A MIXTURE OF A SYNTHETIC ANION EXCHANGE RESIN AND A SYNTHETIC CATION EXCHANGE RESIN IN SUCH PROPORTIONS RELATIVE TO EACH OTHER TO MAINTAIN THE RESULTANT PH OF THE SOLUTION WITHIN A RANGE OF 5 TO 8 WHEREBY SUBSTANTIALLY ONLY SAID ACTIVE COMPONENT TO BE RECOVERED REMAINS IN SAID SOLUTION UNABSORBED BY SAID RESIN MIXTURE.
Claim 2
Dependent Claim
72 words
IN A METHOD FOR RECOVERING AN ACTIVE POLLEN COMPONENT, THE STEP OF MIXING AN UNDEGRADED POLLEN SOLUTION WITH A MIXTURE OF A SYNTHETIC ANION EXCHANGE RESIN AND A SYNTHETIC CATION EXCHANGE RESIN IN SUCH PROPORTIONS RELATIVE TO EACH OTHER TO MAINTAIN THE RESULTANT PH OF THE SOLUTION WITHIN A RANGE OF 5 TO 8 WHEREBY SUBSTANTIALLY ONLY SAID ACTIVE COMPONENT TO BE RECOVERED REMAINS IN SAID SOLUTION UNABSORBED BY SAID RESIN MIXTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |