US2500145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oral pollen antigen and process of preparing same
Assignee: Van Patten Pharmaceutical Co
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Filing: 1946-02-21
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Granted: 1950-03-14
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Expires: 1966-02-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Edgar A Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:49
CPC Classifications
A; A61; A61K; A61K39/00; A61K39/35; A61K39/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS FOR PRODUCING A THERAPEUTIC AGENT FOR ORAL ADMINISTRATION IN THE ALLEVIATION OF HAYFEVER DISTRESSES WITHOUT CAUSING GASTROINTESTINAL UPSET WHICH COMNPRISES SUBJECTING HAY-FEVERCAUSING POLLEN TO A MILD ALKALINE HYDROLYSIS BY TREATING IT WITH A 0.1% AQUEOUS SOLUTION OF AN ALKALI FOR ABOUT TWO HOURS AT ABOUT 50*C., NEUTRALIZING WITH AN ACID, SUBJECTING THE THUS TREATED POLLEN TO A MILD ACID HYDROLYSIS BY TREATING IT WITH A 0.05% AQUEOUS SOLUTION OF AN ACID FOR ABOUT TWO HOURS AT ABOUT 50*C. AND THEY DRYING AND RECOVERING THE TREATED POLLEN.
Claim 2
Dependent Claim
88 words
A PROCESS FOR PRODUCING A THERAPEUTIC AGENT FOR ORAL ADMINISTRATION IN THE ALLEVIATION OF HAYFEVER DISTRESSES WITHOUT CAUSING GASTROINTESTINAL UPSET WHICH COMNPRISES SUBJECTING HAY-FEVERCAUSING POLLEN TO A MILD ALKALINE HYDROLYSIS BY TREATING IT WITH A 0.1% AQUEOUS SOLUTION OF AN ALKALI FOR ABOUT TWO HOURS AT ABOUT 50*C., NEUTRALIZING WITH AN ACID, SUBJECTING THE THUS TREATED POLLEN TO A MILD ACID HYDROLYSIS BY TREATING IT WITH A 0.05% AQUEOUS SOLUTION OF AN ACID FOR ABOUT TWO HOURS AT ABOUT 50*C. AND THEY DRYING AND RECOVERING THE TREATED POLLEN.
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) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |