US4748198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating materials for protecting the surfaces of teeth
Assignee: GC Corp
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Filing: 1987-04-17
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Granted: 1988-05-31
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Expires: 2007-04-17
Abstract
Abstract A coating material for protecting the surfaces of teeth is obtained by dissolving a resinous composition comprising 100 weight parts of a polystreyene resin or a high-impact polystyrene resin and 1 to 60 weight parts of rosin or a rosin derivative added thereto in an organic solvent. The resinous composition may further contain 1 to 100 weight parts of a chlorinated polymer and 1 to 100 weight parts of a coloring matter.
Inventors
- 👤 Masayuki Takahashi
- 👤 Ryoji Nakazato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:50
CPC Classifications
C; C08; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; A; A61; A61K; A61K6/00; A61K6/60; A61K6/65; A61K6/66; A61K6/70; A61K6/78; C08L93/00; C08L93/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
75 words
A coating material for protecting the surfaces of teeth, wherein a resinous composition comprising 100 weight parts of a polystyrene resin or a high-impact polystyrene resin and 1 to 60 weight parts of rosin or a rosin derivative selected from the group consisting of polymerized rosin, rosin-modified maleic acid resin, rosin-modified glycerin ester and rosin-modified pentaerythritol ester, and 1 to 100 weight parts of a chlorinated polymer added thereto is dissolved in an organic solvent.
Claim 2
Dependent Claim
75 words
A coating material for protecting the surfaces of teeth, wherein a resinous composition comprising 100 weight parts of a polystyrene resin or a high-impact polystyrene resin and 1 to 60 weight parts of rosin or a rosin derivative selected from the group consisting of polymerized rosin, rosin-modified maleic acid resin, rosin-modified glycerin ester and rosin-modified pentaerythritol ester, and 1 to 100 weight parts of a chlorinated polymer added thereto is dissolved in an organic solvent.
Claim 3
Dependent Claim
16 words
A coating material as claimed in claim 1, wherein said chlorinated polymer is a chlorinated polyolefin.
Claim 4
Dependent Claim
16 words
A coating material as claimed in claim 1, wherein said chlorinated polymer is a chlorinated rubber.
Claim 5
Dependent Claim
32 words
A coating material as claimed in any one of claims 1 to 3, wherein said resinous composition is dissolved at a concentration of 1 to 40 weight % in an organic solvent.
Claim 6
Dependent Claim
83 words
A coating material for protecting the surfaces of teeth, wherein a resinous composition comprising 100 weight parts of a polystyrene resin or a high-impact polystyrene resin and 1 to 60 weight parts of rosin or rosin derivative selected from the group consisting of polymerized rosin, rosin-modified maleic acid resin, rosin-modified glycerin ester and rosin-modified pentaerythritol ester, 1 to 100 weight parts of a chlorinated polymer and 1 to 100 weight parts of a coloring matter added thereto is dissolved in an organic solvent.
Claim 7
Dependent Claim
83 words
A coating material for protecting the surfaces of teeth, wherein a resinous composition comprising 100 weight parts of a polystyrene resin or a high-impact polystyrene resin and 1 to 60 weight parts of rosin or rosin derivative selected from the group consisting of polymerized rosin, rosin-modified maleic acid resin, rosin-modified glycerin ester and rosin-modified pentaerythritol ester, 1 to 100 weight parts of a chlorinated polymer and 1 to 100 weight parts of a coloring matter added thereto is dissolved in an organic solvent.
Claim 8
Dependent Claim
16 words
A coating material as claimed in claim 5, wherein said chlorinated polymer is a chlorinated polyolefin.
Claim 9
Dependent Claim
16 words
A coating material as claimed in claim 5, wherein said chlorinated polymer is a chlorinated rubber.
Claim 10
Dependent Claim
47 words
A coating material as claimed in any one of claims 5 to 7, wherein said coloring matter comprises a coloring matter of fluorescence or a color tone capable of clearly indicating the boundary between the surface portion to be protected and the cavity portion, and discriminating therebetween.
Claim 11
Dependent Claim
26 words
A coating material as claimed in claim 5, wherein said coloring matter comprises at least one of coloring matters coated with a styrene.rosin-modified maleic acid resin.
Claim 12
Dependent Claim
27 words
A coating material as claimed in claim 5, wherein said resinous composition is dissolved at a concentration of 1 to 40 weight % in an organic solvent.
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) | 1991-05-31 | 1991-11-30 | 1992-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-31 | 1995-11-30 | 1996-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-31 | 1999-11-30 | 2000-05-31 | $7700.00 | Window Closed / Lapsed |