US4067853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions of bishydroxysubstitutedary di acrylates for prosthodontia
Assignee: SIH Stiftung and Co Industrie Holding KG
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Filing: 1975-08-01
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Granted: 1978-01-10
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Expires: 1995-08-01
Abstract
Abstract Superior artificial teeth, dentures, other dental replacement parts and dental prosthetic articles and devices, which exhibit high abrasion resistance, stability to moisture and which do not undergo volume changes, are obtained by polymerization of a compound of the formula ##STR1## in which R is H or -CH 3 , X is an alkylidene or the -SO 2 -group, Y is an oxyalkylene group having between 2 and 5 carbon atoms, or an alkylidene group having between 1 and 5 carbon atoms. In some instances, the polymerization is carried out in the presence of a filler.
Inventors
- 👤 Werner Schmitt
- 👤 Robert Purrmann
- 👤 Peter Jochum
- 👤 Wolf Dieter Zahler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:20
CPC Classifications
C; C08; C08F; C08F120/00; C08F120/02; C08F120/10; C08F120/38; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; C08F20/00; C08F20/02; C08F20/10; C08F20/20; Y; Y10; Y10S; Y10S528/00; Y10S528/92
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
58 words
An artificial denture prepared by disposing in the configuration of said artificial denture and then polymerizing at least one essentially pure compound of the formula ##STR5##wherein R is hydrogen of methyl, X is an ##STR6##or the -- SO 2 -- group, Y is an oxyalkylene group of 2-5 carbon atoms or an alkylidene group of 2-3 carbon atoms.
Claim 2
Dependent Claim
58 words
An artificial denture prepared by disposing in the configuration of said artificial denture and then polymerizing at least one essentially pure compound of the formula ##STR5##wherein R is hydrogen of methyl, X is an ##STR6##or the -- SO 2 -- group, Y is an oxyalkylene group of 2-5 carbon atoms or an alkylidene group of 2-3 carbon atoms.
Claim 3
Dependent Claim
14 words
An artificial denture according to claim 1, in which the compound polymerized is ##STR7##
Claim 4
Dependent Claim
13 words
An artificial denture according to claim 1, in which the compound polymerized is
Claim 5
Dependent Claim
14 words
An artificial denture according to claim 1, in which the compound polymerized is ##STR8##
Claim 6
Dependent Claim
13 words
An artificial denture according to claim 1, in which the compound polymerized is
Claim 7
Dependent Claim
13 words
An artificial denture according to claim 1, in which the compound polymerized is
Claim 8
Dependent Claim
13 words
An artificial denture according to claim 1, in which the compound polymerized is
Claim 9
Dependent Claim
14 words
An artificial denture according to claim 1, in which the compound polymerized is ##STR9##
Claim 10
Dependent Claim
13 words
An artificial denture according to claim 1, in which the compound polymerized is
Claim 11
Dependent Claim
15 words
An artificial denture according to claim 1, in which X is the SO 2 group.
Claim 12
Dependent Claim
18 words
An artificial denture according to claim 1, in which the compound is polymerized in admixture with a filler.
Claim 13
Dependent Claim
29 words
An artificial denture according to claim 1, in which the filler is a member selected from the group consisting of glass fibers, quartz fibers, quartz powder, alumina and silicates.
References Cited (Backward Citations)
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Cited
US2890202A
Cited
US2830078A
Cited
US3179623A
Cited
GB1089867A
Cited
US3538149A
Cited
US3810938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |