Patent US4838288A successfully refreshed from Google Patents.
Patent US3876771A successfully refreshed from Google Patents.
US3876771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skin protective gel containing polyvinyl methylether or monoisopropyl ester of polyvinyl methylether maleic acid
Assignee: Hallister Inc
•
Filing: 1973-09-04
•
Granted: 1975-04-08
•
Expires: 1993-09-04
Abstract
Abstract The present invention provides a protective skin coating material in the form of a gel primarily intended for use in combination with ostomy appliances and the like. The gelatinous material is made up of a film-forming protective colloidal material in combination with a solvent and a gelling agent.
Inventors
- 👤 Wilhelm G Denner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:08
CPC Classifications
A; A61; A61L; A61L24/00; A61L24/04; A61L24/043; A61L2400/00; A61L2400/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A GELATINOUS MIXTURE FOR APPLICATION TO HUMAN SKIN, COMPRISING: 25 TO 90% BY WEIGHT OF ISOPRANOL, 0.1 TO 5% BY WEIGHT OF A PRESERVATIVE SELECTED FROM THE GROUP CONSISTING OS SORBIC ACID, BUTYL PARAHYDROXYBENZOATE AND METHYL PARA-HYDROXYBENZOATE, 0 TO 50% BY WEIGHT OF POLYVINYL PYRROLIDONE, 5 TO 50% BY WEIGHT OF A FILM FORMING AGENT SELECTED FROM THE GROUP CONSISTING OF MONOISOPROPYL ESTER OF POLYVINYL METHYLETHER AND POLYVINYL METHYLETHER, AND 1.5 TO 5% BY WEIGHT OF A GELLING AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROXYPROPYL CELLULOSE AND WATERSOLUBLE POLYACRYLIC ACID CROSSLINKED WITH 1% OF POLYALLYL SUCROSE HAVING AN AVERAGE OF ABOUT 5.8 ALLYL GROUPS FOR EACH SUCROSE MOLECULE.
Claim 2
Dependent Claim
109 words
A GELATINOUS MIXTURE FOR APPLICATION TO HUMAN SKIN, COMPRISING: 25 TO 90% BY WEIGHT OF ISOPRANOL, 0.1 TO 5% BY WEIGHT OF A PRESERVATIVE SELECTED FROM THE GROUP CONSISTING OS SORBIC ACID, BUTYL PARAHYDROXYBENZOATE AND METHYL PARA-HYDROXYBENZOATE, 0 TO 50% BY WEIGHT OF POLYVINYL PYRROLIDONE, 5 TO 50% BY WEIGHT OF A FILM FORMING AGENT SELECTED FROM THE GROUP CONSISTING OF MONOISOPROPYL ESTER OF POLYVINYL METHYLETHER AND POLYVINYL METHYLETHER, AND 1.5 TO 5% BY WEIGHT OF A GELLING AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROXYPROPYL CELLULOSE AND WATERSOLUBLE POLYACRYLIC ACID CROSSLINKED WITH 1% OF POLYALLYL SUCROSE HAVING AN AVERAGE OF ABOUT 5.8 ALLYL GROUPS FOR EACH SUCROSE MOLECULE.
References Cited (Backward Citations)
US2542897A
Cited
US3269903A
Cited
US3134720A
Cited
US3485915A
Cited
US3632547A
Cited
US3710779A
Cited
US3749773A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |