US2955982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous process for internally reinforcing salt tablets
Assignee: Parmelee Pharmaceutical Co
•
Filing: 1957-10-22
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Granted: 1960-10-11
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Expires: 1977-10-22
Abstract
No abstract record available.
Inventors
- 👤 William C Moeller
- 👤 Louise R Smith
- 👤 Jr Ludwig A Smith
- 👤 Frances D Smith
- 👤 Margaret L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:54
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2022; A61K9/205; A61K9/2054; A61K9/2095; Y; Y10; Y10S; Y10S424/00; Y10S424/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A METHOD OF PREPARING AN INTERNALLY REINFORCED, SLOWLY SOLUBLE SALT TABLET WHEREIN A MULTIPLICITY OF GROUPS OF SALT PARTICLES ARE EACH SURROUNDED BY A MEMBRANE COMPOSED OF A CELLULOSIC DERIVATIVE, THE STEPS OF COMPRESSING PARTICLES OF SALT INTO A SELF-SUBSTAINING, HIGHLY POROUS TABLET, SUBMERGING THE TABLET IN A LUQIUD COMPOSITION CONSISTING ESSENTIALLY OF A FILM FORMING CELLULOSE DERIVATIVE AND A SOLVENT THEREFOR, MAINTAINING THE TEMPERATURE OF THE LIQUID COMPOSITION LOWER THAN THE TEMPERATURE OF THE TABLET AT THE MOMENT THE LATTER IS SUBMERGED IN THE LIQUID COMPOSITION, REMOVING THE TABLET FROM THE LIQUID COMPOSITION, ALLOWING THE EXCESS OF LIQUID TO DRAIN FROM THE TABLE, AND THEREAFTER DRYING THE TABLET.
Claim 2
Dependent Claim
110 words
IN A METHOD OF PREPARING AN INTERNALLY REINFORCED, SLOWLY SOLUBLE SALT TABLET WHEREIN A MULTIPLICITY OF GROUPS OF SALT PARTICLES ARE EACH SURROUNDED BY A MEMBRANE COMPOSED OF A CELLULOSIC DERIVATIVE, THE STEPS OF COMPRESSING PARTICLES OF SALT INTO A SELF-SUBSTAINING, HIGHLY POROUS TABLET, SUBMERGING THE TABLET IN A LUQIUD COMPOSITION CONSISTING ESSENTIALLY OF A FILM FORMING CELLULOSE DERIVATIVE AND A SOLVENT THEREFOR, MAINTAINING THE TEMPERATURE OF THE LIQUID COMPOSITION LOWER THAN THE TEMPERATURE OF THE TABLET AT THE MOMENT THE LATTER IS SUBMERGED IN THE LIQUID COMPOSITION, REMOVING THE TABLET FROM THE LIQUID COMPOSITION, ALLOWING THE EXCESS OF LIQUID TO DRAIN FROM THE TABLE, AND THEREAFTER DRYING THE TABLET.
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) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |