US3923740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions for use in prosthodontia
Assignee: SIH Stiftung and Co Industrie Holding KG
•
Filing: 1972-07-31
•
Granted: 1975-12-02
•
Expires: 1992-07-31
Abstract
Abstract Superior dental fillings, tooth replacement parts, bridges and repair parts, which exhibit high abrasion resistance, stability to moisture and which do not undergo volume changes, are obtained by polymerization of a compound of formula IN WHICH R is H or -CH3, X is an alkylidene or the -SO2- 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
2026-10-23 02:11
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/03; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; C07C67/14; C08; C08F; C08F120/00; C08F120/02; C08F120/10; C08F120/38; C08F20/00; C08F20/02; C08F20/10; C08F20/20; C08K; C08K3/00; C08K3/34; C08L; C08L33/00; C08L33/04; C08L33/06; C08L33/10; C08L33/12; C08L33/14; Y; Y10; Y10S; Y10S528/00; Y10S528/92
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
29 words
A METHOD OF PREPARING AN ARTIFICIAL DENTURE WHICH COMPRISES DISPOSING IN THE CONFIGURATION OF SAID ARTIFICIAL DENTURE AND THEN POLYMERIZING AT LEAST ONE ESSENTIALLY PURE COMPOUND OF THE FORMULA
Claim 2
Independent Claim
29 words
A METHOD OF PREPARING AN ARTIFICIAL DENTURE WHICH COMPRISES DISPOSING IN THE CONFIGURATION OF SAID ARTIFICIAL DENTURE AND THEN POLYMERIZING AT LEAST ONE ESSENTIALLY PURE COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
12 words
The method according to claim 1 wherein the compound being polymerized is
Claim 4
Dependent Claim
12 words
The method according to claim 1, wherein the compound being polymerized is
Claim 5
Dependent Claim
12 words
The method according to claim 1, wherein the compound being polymerized is
Claim 6
Dependent Claim
12 words
The method according to claim 1 wherein the compound being polymerized is
Claim 7
Dependent Claim
12 words
The method according to claim 1 wherein the compound being polymerized is
Claim 8
Dependent Claim
12 words
The method according to claim 1, wherein the compound being polymerized is
Claim 9
Dependent Claim
12 words
The method according to claim 1 wherein the compound being polymerized is
Claim 10
Dependent Claim
12 words
The method according to claim 1 wherein the compound being polymerized is
Claim 11
Dependent Claim
12 words
The method according to claim 1, in which x is the -SO2-group.
Claim 12
Dependent Claim
31 words
The method according to claim 1, in which the polymerization is conducted in the presence of a free radical initiator and at a temperature of from room temperature to about 160*C.
Claim 13
Dependent Claim
16 words
The method according to claim 1, wherein the compound is polymerized in admixture with a filler.
Claim 14
Dependent Claim
28 words
The method according to claim 12, in which the filler is a member selected from the group consisting of glass fibers, quartz fibers, quartz powder, alumina and silicates.
Claim 15
Independent Claim
28 words
A METHOD OF PREPARING A DENTAL FILLING WHICH COMPRISES DEPOSITING IN A CAVITY IN A TOOTH AND THEN POLYMERIZING AT LEAST ONE ESSENTIALLY PURE COMPOUND OF THE FORMULA
Claim 16
Independent Claim
28 words
A METHOD OF PREPARING A DENTAL FILLING WHICH COMPRISES DEPOSITING IN A CAVITY IN A TOOTH AND THEN POLYMERIZING AT LEAST ONE ESSENTIALLY PURE COMPOUND OF THE FORMULA
Claim 17
Dependent Claim
12 words
The method according to claim 14, wherein the compound being polymerized is
Claim 18
Dependent Claim
12 words
The method according to claim 14, wherein the compound being polymerized is
Claim 19
Dependent Claim
12 words
The method according to claim 14, wherein the compound being polymerized is
Claim 20
Dependent Claim
12 words
The method according to claim 14, wherein the compound being polymerized is
Claim 21
Dependent Claim
12 words
The method according to claim 14, wherein the compound being polymerized is
Claim 22
Dependent Claim
12 words
The method according to claim 14, wherein the compound being polymerized is
Claim 23
Dependent Claim
13 words
The method according to claim 14, in which X is the SO2 group.
Claim 24
Dependent Claim
16 words
The method according to claim 14, wherein the compound is polymerized in admixture with a filler.
Claim 25
Dependent Claim
28 words
The method according to claim 22, 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)
US3066112A
Cited
US3539533A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |