US2997399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Denture adhesive composition
Assignee: Polymed Laboratories Inc
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Filing: 1958-06-20
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Granted: 1961-08-22
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Expires: 1978-06-20
Abstract
No abstract record available.
Inventors
- 👤 Genevieve B Eberhard
- 👤 Frank T Friedl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
A; A61; A61C; A61C13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A METHOD OF SECURING A DENTURE IN PLACE IN THE MOUTH WHICH COMPRISES APPLYING TO THE FACE OF THE DENTURE HAVING CONTACT WITH ORAL SURFACES AN ADHESIVE COMPOSITION WHEREIN THE ADHESIVE COMPONENT THEREOF CONSISTS ESSENTIALLY BY WEIGHT OF 20-100% OF HYDROXYETHYL CELLULOSE HAVING AN AVERAGE DEGREE OF SUBSTITUTION OF ETHYLENE OXIDE GROUPS PER ANHYDRO-GLUCOSE UNIT OF ABOUT 0.4-4.5; 0-75% OF AN ALKYL CELLULOSE SELECTED FROM GROUPS CONSISTING OF METHYL CELLULOSE HAVING N AVERAGE DEGREE OF SUBSTITUTION OF ABOUT 1.4-2.6, ETHYL CELLULOSE HAVING AN AVERAGE DEGREE OF SUBSTITUTION OF ABOUT 0.8-1.9, AND A HYDROXYALKYL METHYL CELLULOSE HAVING 2-3 CORBON ATOMS IN THE ALKYL GROUP AND AN AVERAGE DEGREE OF SUBSTITUTION FOR HYDROXYALKYL GROUPS OF ABOUT 0.1-0.5 AND FOR METHYL GROUPS OF ABOUT 1.0-2.5; AND 0-20% OF POLYACRYLAMIDE.
Claim 2
Independent Claim
126 words
A METHOD OF SECURING A DENTURE IN PLACE IN THE MOUTH WHICH COMPRISES APPLYING TO THE FACE OF THE DENTURE HAVING CONTACT WITH ORAL SURFACES AN ADHESIVE COMPOSITION WHEREIN THE ADHESIVE COMPONENT THEREOF CONSISTS ESSENTIALLY BY WEIGHT OF 20-100% OF HYDROXYETHYL CELLULOSE HAVING AN AVERAGE DEGREE OF SUBSTITUTION OF ETHYLENE OXIDE GROUPS PER ANHYDRO-GLUCOSE UNIT OF ABOUT 0.4-4.5; 0-75% OF AN ALKYL CELLULOSE SELECTED FROM GROUPS CONSISTING OF METHYL CELLULOSE HAVING N AVERAGE DEGREE OF SUBSTITUTION OF ABOUT 1.4-2.6, ETHYL CELLULOSE HAVING AN AVERAGE DEGREE OF SUBSTITUTION OF ABOUT 0.8-1.9, AND A HYDROXYALKYL METHYL CELLULOSE HAVING 2-3 CORBON ATOMS IN THE ALKYL GROUP AND AN AVERAGE DEGREE OF SUBSTITUTION FOR HYDROXYALKYL GROUPS OF ABOUT 0.1-0.5 AND FOR METHYL GROUPS OF ABOUT 1.0-2.5; AND 0-20% OF POLYACRYLAMIDE.
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) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |