US2553806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enteric composition and method of making same
Assignee: Parke Davis and Co LLC
•
Filing: 1950-07-12
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Granted: 1951-05-22
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Expires: 1970-07-12
Abstract
No abstract record available.
Inventors
- 👤 Herman H Bogin
- 👤 Ernest R Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:49
CPC Classifications
A; A61; A61K; A61K47/00; A61K47/30; A61K47/36; A61K47/38; A61K9/00; A61K9/14; A61K9/141; A61K9/146; A61K9/20; A61K9/2095; Y; Y10; Y10S; Y10S411/00; Y10S411/915
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PROCESS WHICH COMPRISES EMULSIFYING A WATER-INSOLUBLE THERAPEUTIC LIQUID WITH AN ALKALI METAL CARBOXYLATE SALT OF A PARTIAL ESTER OF A POLYCARBOXYLIC ACID AND A CELLULOSE ESTER OF A LOWER ALIPHATIC MONOCARBOXYLIC ACID AND DRYING THE RESULTING PRODUCT WHEREBY A STABLE POWDER HAVING ENTERIC PROPERTIES IS FORMED.
Claim 2
Dependent Claim
47 words
A PROCESS WHICH COMPRISES EMULSIFYING A WATER-INSOLUBLE THERAPEUTIC LIQUID WITH AN ALKALI METAL CARBOXYLATE SALT OF A PARTIAL ESTER OF A POLYCARBOXYLIC ACID AND A CELLULOSE ESTER OF A LOWER ALIPHATIC MONOCARBOXYLIC ACID AND DRYING THE RESULTING PRODUCT WHEREBY A STABLE POWDER HAVING ENTERIC PROPERTIES IS FORMED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |