US2823166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Choline ascorbate, methods for producing same, and compositions thereof
Assignee: Individual
•
Filing: 1954-11-17
•
Granted: 1958-02-11
•
Expires: 1974-11-17
Abstract
No abstract record available.
Inventors
- 👤 Walter H Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:46
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/335; A61K31/365; A61K31/375; C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/62
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
51 words
A METHOD FOR PREPARING CHOLINE ASCORBATE COMPRISING REACTING ASCORBIC ACID IN THE PRESENCE OF AN INERT SOLVENT MEDIUM WITH A SUBSTANTIALLY EQUIMOLAR QUANTITY OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF (I) CHOLINE AND (II) THE CHOLINE-FORMING REAGENTS TRIMETHYLAMINE AND ETHYLENE OXIDE, AND SEPARATING THE SOLVENT FROM THE REACTION PRODUCT.
Claim 2
Independent Claim
51 words
A METHOD FOR PREPARING CHOLINE ASCORBATE COMPRISING REACTING ASCORBIC ACID IN THE PRESENCE OF AN INERT SOLVENT MEDIUM WITH A SUBSTANTIALLY EQUIMOLAR QUANTITY OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF (I) CHOLINE AND (II) THE CHOLINE-FORMING REAGENTS TRIMETHYLAMINE AND ETHYLENE OXIDE, AND SEPARATING THE SOLVENT FROM THE REACTION PRODUCT.
Claim 3
Independent Claim
58 words
A METHOD FOR THE PREPARATION OF CHOLINE ASCORBATE COMPRISING DISSOLVING CHOLINE IN METHANOL, ADDING A SUSPENSION OF ASCORBIC ACID IN METHANOL TO SAID SOLUTION THE AMOUNT OF ASCORBIC ACID BEING SUBSTANTIALLY EQUIMOLAR WITH RESPECT TO THE CHOLINE, TREATING THE RESULTING REACTION MASS WITH CARBON, FILTERING THE TREATED SOLUTION, AND DISTILLING METHANOL FROM SAID SOLUTION TO RECOVER CHOLINE ASCORBATE.
Claim 4
Independent Claim
58 words
A METHOD FOR THE PREPARATION OF CHOLINE ASCORBATE COMPRISING DISSOLVING CHOLINE IN METHANOL, ADDING A SUSPENSION OF ASCORBIC ACID IN METHANOL TO SAID SOLUTION THE AMOUNT OF ASCORBIC ACID BEING SUBSTANTIALLY EQUIMOLAR WITH RESPECT TO THE CHOLINE, TREATING THE RESULTING REACTION MASS WITH CARBON, FILTERING THE TREATED SOLUTION, AND DISTILLING METHANOL FROM SAID SOLUTION TO RECOVER CHOLINE ASCORBATE.
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) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |