Patent US5105167A successfully refreshed from Google Patents.
Patent US2732337A successfully refreshed from Google Patents.
US2732337A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photo-oxidation of ergosterol
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:04
CPC Classifications
C; C07; C07J; C07J9/00; C07J75/00; Y; Y10; Y10S; Y10S204/00; Y10S204/902; Y10S204/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE METHOD OF PRODUCING AN IRRADIATED OXIDATION PRODUCT OF ERGOSTEROL WHICH COMPRISES: DISSOLVING ERGOSTEROL AND A SMALL AMOUNT OF HEMATOPORPHYRIN IN ALCOHOL, REFLUXING THE ALCOHOLIC SOLUTION FOR AT LEAST 60 HOURS WHILE PASSING MOLECULAR OXYGEN THROUGH THE SOLUTION AND IRRADIATING THE SOLUTION WITH VISIBLE LIGHT, SEPARATING THE OXIDATION PRODUCT FROM THE ALCOHOL SOLVENT, SAPONIFYING THE OXIDATION PRODUCT WITH DILUTE METHANOLIC CAUSTIC, REMOVING A RESINOUS BY-PRODUCT FROM THE NON-RESINOUS SAPONIFIED OXIDATION PRODUCT, DISSOLVING THE LATTER IN ETHER, AND IRRADIATING THE ETHER SOLUTION WITH RAYS FROM A QUARTZ MERCURY-VAPOR LAMP.
Claim 2
Independent Claim
88 words
THE METHOD OF PRODUCING AN IRRADIATED OXIDATION PRODUCT OF ERGOSTEROL WHICH COMPRISES: DISSOLVING ERGOSTEROL AND A SMALL AMOUNT OF HEMATOPORPHYRIN IN ALCOHOL, REFLUXING THE ALCOHOLIC SOLUTION FOR AT LEAST 60 HOURS WHILE PASSING MOLECULAR OXYGEN THROUGH THE SOLUTION AND IRRADIATING THE SOLUTION WITH VISIBLE LIGHT, SEPARATING THE OXIDATION PRODUCT FROM THE ALCOHOL SOLVENT, SAPONIFYING THE OXIDATION PRODUCT WITH DILUTE METHANOLIC CAUSTIC, REMOVING A RESINOUS BY-PRODUCT FROM THE NON-RESINOUS SAPONIFIED OXIDATION PRODUCT, DISSOLVING THE LATTER IN ETHER, AND IRRADIATING THE ETHER SOLUTION WITH RAYS FROM A QUARTZ MERCURY-VAPOR LAMP.
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) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |