US2864848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing l-alpha-glycerylphosphorylcholine
Assignee: National Research Council Canada
•
Filing: 1954-07-19
•
Granted: 1958-12-16
•
Expires: 1974-07-19
Abstract
No abstract record available.
Inventors
- 👤 Mcarthur Charles Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:04
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
IN THE PRODUCTION OF L-A-GLYCERYLPHOSPHORYLCHOLINE IN HIGH YIELD, THE METHOD WHICH COMPRISES INTIMATELY MIXING LECITHIN IN ONE OF A GROUP OF SOLVENTS CONSISTING OF WATER AND AQUEOUS ALCOHOL, ADDING THERETO A SOLUBLE MERCURIC SALT, HEATING THE MIXTURE AT THE BOILING POINT OF THE SOLVENT AND CONTINUING THE HEATING UNTIL THE FATTY ACIDS ARE LIBERATED.
Claim 2
Dependent Claim
54 words
IN THE PRODUCTION OF L-A-GLYCERYLPHOSPHORYLCHOLINE IN HIGH YIELD, THE METHOD WHICH COMPRISES INTIMATELY MIXING LECITHIN IN ONE OF A GROUP OF SOLVENTS CONSISTING OF WATER AND AQUEOUS ALCOHOL, ADDING THERETO A SOLUBLE MERCURIC SALT, HEATING THE MIXTURE AT THE BOILING POINT OF THE SOLVENT AND CONTINUING THE HEATING UNTIL THE FATTY ACIDS ARE LIBERATED.
References Cited (Backward Citations)
US1012923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |