US2558065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing solutions of gelatin in polyhydric alcohols
Assignee: Individual
•
Filing: 1949-05-03
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Granted: 1951-06-26
•
Expires: 1969-05-03
Abstract
No abstract record available.
Inventors
- 👤 Linwood F Tice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:06
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/02; A61K47/00; A61K47/06; A61K47/08; A61K47/10; A61K47/30; A61K47/42; C; C09; C09H; C09H5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
AN IMPROVED METHOD OF PREPARING SOLUTIONS OF GELATIN IN POLYHYDRIC ALCOHOLS COMPRISING ADDING A POLYHYDRIC ALCOHOL TO GRANULATED GELATIN AND SIMULTANEOUSLY THEREWITH EVACUATING THE AIR FROM BETWEEN THE PARTICLES OF GELATIN UNTIL THE GELATIN IS THOROUGHLY WETTED WITH THE POLYHYDRIC ALCOHOL, SUBSEQUENTLY HEATING THE RESULTING MIXTURE AT A TEMPERATURE IN THE RANGE OF 80-100* C. UNTIL THE MIXTURE BECOMES A CLEAR, HOMOGENEOUS LIQUID, AND THEREAFTER COOLING SAID LIQUID UNTIL A SOLID MASS IS OBTAINED.
Claim 2
Dependent Claim
74 words
AN IMPROVED METHOD OF PREPARING SOLUTIONS OF GELATIN IN POLYHYDRIC ALCOHOLS COMPRISING ADDING A POLYHYDRIC ALCOHOL TO GRANULATED GELATIN AND SIMULTANEOUSLY THEREWITH EVACUATING THE AIR FROM BETWEEN THE PARTICLES OF GELATIN UNTIL THE GELATIN IS THOROUGHLY WETTED WITH THE POLYHYDRIC ALCOHOL, SUBSEQUENTLY HEATING THE RESULTING MIXTURE AT A TEMPERATURE IN THE RANGE OF 80-100* C. UNTIL THE MIXTURE BECOMES A CLEAR, HOMOGENEOUS LIQUID, AND THEREAFTER COOLING SAID LIQUID UNTIL A SOLID MASS IS OBTAINED.
References Cited (Backward Citations)
GB439784A
Cited
US2166074A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |