Patent US2909462A successfully refreshed from Google Patents.
US2909462A
Expired / Lapsed
US
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Acrylic acid polymer laxative compositions
Assignee: Bristol Myers Co
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Filing: 1955-12-08
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Granted: 1959-10-20
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Expires: 1975-12-08
Abstract
No abstract record available.
Inventors
- 👤 Robert B Warfield
- 👤 Louis F Stumpf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:30
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/74; A61K31/765; A61K31/78
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A PHARMACEUTICAL LAXATIVE COMPOSITION FOR ORAL ADMINISTRATION COMPRISING A COLLOIDALLY WATER-SOLUBLE POLYMER OF ACRYLIC ACID CROSSLINKED WITH FROM ABOUT 0.75% TO 2.0% OF A CROSSLINKING AGENT SELECTED FROM THE CLASS CONSISTING OF POLYALLYL SUCROSE AND POLYALLYL PENTAERYTHRITOL SAID CROSS-LINKED ACRYLIC ACID POLYMER HAVING BEEN AGGLOMERATED BY THE ACTION OF STEAM AND DRIED.
Claim 2
Dependent Claim
52 words
A PHARMACEUTICAL LAXATIVE COMPOSITION FOR ORAL ADMINISTRATION COMPRISING A COLLOIDALLY WATER-SOLUBLE POLYMER OF ACRYLIC ACID CROSSLINKED WITH FROM ABOUT 0.75% TO 2.0% OF A CROSSLINKING AGENT SELECTED FROM THE CLASS CONSISTING OF POLYALLYL SUCROSE AND POLYALLYL PENTAERYTHRITOL SAID CROSS-LINKED ACRYLIC ACID POLYMER HAVING BEEN AGGLOMERATED BY THE ACTION OF STEAM AND DRIED.
References Cited (Backward Citations)
US2541142A
Cited
US2798053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |