Patent US4280936A successfully refreshed from Google Patents.
US4280936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Denture adhesive of sodium carboxymethylcellulose, poly(ethylene oxide) homopolymer and mineral oil
Assignee: Richardson Vicks Inc
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Filing: 1980-04-17
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Granted: 1981-07-28
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Expires: 2000-04-17
Abstract
Abstract An improved denture adhesive contains a particular amount of a specified ratio of sodium carboxymethylcellulose and poly(ethylene oxide) in a mineral oil base.
Inventors
- 👤 Dadi J. Dhabhar
- 👤 Allen Heyd
- 👤 Nicholas F. Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:03
CPC Classifications
C; C09; C09J; C09J101/00; C09J101/08; C09J101/26; C09J101/28; C09J101/286; C08; C08L; C08L2666/00; C08L2666/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
45 words
An anhydrous denture adhesive liquid composition consisting essentially of sodium carboxymethylcellulose, poly(ethylene oxide) homopolymer and mineral oil wherein the sodium carboxymethylcellulose and poly(ethylene oxide) homopolymer are present in a weight ratio of about 3:1 and together comprise about 45 weight percent of the total composition.
Claim 2
Dependent Claim
45 words
An anhydrous denture adhesive liquid composition consisting essentially of sodium carboxymethylcellulose, poly(ethylene oxide) homopolymer and mineral oil wherein the sodium carboxymethylcellulose and poly(ethylene oxide) homopolymer are present in a weight ratio of about 3:1 and together comprise about 45 weight percent of the total composition.
Claim 3
Dependent Claim
33 words
A composition of claim 1 having present in the composition from about 1 to about 4 weight percent of low molecular weight polyethylene having a molecular weight of about 1,100 to about 5,000.
Claim 4
Dependent Claim
34 words
A composition of claim 2 comprising about 33.75 weight percent of sodium carboxymethylcellulose, about 11.25 weight percent of poly(ethylene oxide) homopolymer, about 2.5 weight percent polyethylene and about 52.185 weight percent of mineral oil.
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) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |