Patent US4115067A successfully refreshed from Google Patents.
Patent US4530942A successfully refreshed from Google Patents.
US4530942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
CMC/PEG containing hydrophilic denture adhesive
Assignee: Richardson Vicks Inc
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Filing: 1984-04-12
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Granted: 1985-07-23
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Expires: 2004-04-12
Abstract
Abstract An improved denture adhesive containing sodium carboxymethylcellulose (CMC) as the sole adhesive component in a hydrophilic vehicle comprising certain polyethylene glycols (PEG) and, as an optional component in certain forms of the subject adhesives, glycerin, for enhancing pharmaceutical elegance of the final product.
Inventors
- 👤 Dadi J. Dhabhar
- 👤 Nicholas F. Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:59
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/30; A61K6/35
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
76 words
A denture adhesive composition consisting essentially of a substantially anhydrous mixture of from about 25 to about 50 percent w/w sodium carboxymethycellulose as the sole adhesive component and from about 50 to about 75 percent w/w of a polyethylene glycol fraction comprising one or more polyethylene glycols each having an average molecular weight of from 200 to 20,000 and said fraction having a viscosity of from about 44 to about 25,600 centipoises at about 60° C.
Claim 2
Dependent Claim
76 words
A denture adhesive composition consisting essentially of a substantially anhydrous mixture of from about 25 to about 50 percent w/w sodium carboxymethycellulose as the sole adhesive component and from about 50 to about 75 percent w/w of a polyethylene glycol fraction comprising one or more polyethylene glycols each having an average molecular weight of from 200 to 20,000 and said fraction having a viscosity of from about 44 to about 25,600 centipoises at about 60° C.
Claim 3
Dependent Claim
77 words
A denture adhesive composition consisting essentially of a substantially anhydrous mixture of from about 35 to about 45 percent w/w sodium carboxymethylcellulose as the sole adhesive component and from about 55 to about 65 percent w/w of a polyethylene glycol fraction comprising one or more polyethylene glycols each having an average molecular weight of from about 200 to 20,000 and said fraction having a viscosity of from about 44 to about 2,500 centipoises at about 60° C.
Claim 4
Dependent Claim
77 words
A denture adhesive composition consisting essentially of a substantially anhydrous mixture of from about 35 to about 45 percent w/w sodium carboxymethylcellulose as the sole adhesive component and from about 55 to about 65 percent w/w of a polyethylene glycol fraction comprising one or more polyethylene glycols each having an average molecular weight of from about 200 to 20,000 and said fraction having a viscosity of from about 44 to about 2,500 centipoises at about 60° C.
Claim 5
Dependent Claim
77 words
A denture adhesive composition consisting essentially of a substantially anhydrous mixture of from about 25 to about 50 percent w/w sodium carboxymethylcellulose as the sole adhesive component and from about 50 to about 75 percent w/w of a polyethylene glycol fraction comprising one or more polyethylene glycols each having an average molecular weight of from 200 to about 20,000 and said fraction having a viscosity of from about 44 to about 300 centipoises at about 60° C.
Claim 6
Dependent Claim
77 words
A denture adhesive composition consisting essentially of a substantially anhydrous mixture of from about 25 to about 50 percent w/w sodium carboxymethylcellulose as the sole adhesive component and from about 50 to about 75 percent w/w of a polyethylene glycol fraction comprising one or more polyethylene glycols each having an average molecular weight of from 200 to about 20,000 and said fraction having a viscosity of from about 44 to about 300 centipoises at about 60° C.
Claim 7
Dependent Claim
31 words
The composition of claim 3 wherein said polyethylene glycol fraction comprises a mixture of PEG 400 and PEG 8000 in a weight ratio of from about 9:1 to about 33:1, respectively.
Claim 8
Dependent Claim
31 words
The composition of claim 3 wherein said polyethylene glycol fraction comprises a mixture of PEG 600 and PEG 8000 in a weight ratio of from about 9:1 to about 33:1, respectively.
Claim 9
Dependent Claim
20 words
The composition of claim 3 wherein up to about one half of said polyethylene glycol fraction is substituted with glycerin.
Claim 10
Dependent Claim
80 words
A denture adhesive composition consisting essentially of a substantially anhydrous mixture of from about 25 to about 50 percent w/w of sodium carboxymethylcellulose as the sole adhesive component, up to about 25 percent w/w of glycerin, and substantially the remainder of a polyethylene glycol fraction comprising one or more polyethylene glycols each having an average molecular weight of from 200 to 20,000 and said fraction having a viscosity of from about 44 to about 300 centipoises at about 60° C.
Claim 11
Dependent Claim
80 words
A denture adhesive composition consisting essentially of a substantially anhydrous mixture of from about 25 to about 50 percent w/w of sodium carboxymethylcellulose as the sole adhesive component, up to about 25 percent w/w of glycerin, and substantially the remainder of a polyethylene glycol fraction comprising one or more polyethylene glycols each having an average molecular weight of from 200 to 20,000 and said fraction having a viscosity of from about 44 to about 300 centipoises at about 60° C.
Claim 12
Dependent Claim
31 words
The composition of claim 7 wherein said polyethylene glycol fraction comprises a mixture of PEG 400 and PEG 8000 in a weight ratio of from about 9:1 to about 33:1, respectively.
Claim 13
Dependent Claim
30 words
The composition of claim 7 wherein said polyethylene glycol fraction comprises a mixture PEG 600 and PEG 8000 in a weight ratio of from a 9:1 to about 33:1, respectively.
References Cited (Backward Citations)
US2720726A
Cited
US2716615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-22 | 1989-01-21 | 1989-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-22 | 1993-01-21 | 1993-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-22 | 1997-01-21 | 1997-07-23 | $7700.00 | Window Closed / Lapsed |