Patent US5104591A successfully refreshed from Google Patents.
US5104591A
Expired / Lapsed
US
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Method for light curing of dental light-curing resins
Assignee: Japan Institute of Advanced Dentistry
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Filing: 1990-01-22
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Granted: 1992-04-14
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Expires: 2010-01-22
Abstract
Abstract Dental light-curing resins are cured with light and under pressure by placing the uncured resin on a cast or mold or dental appliance to be prepared then covered with a transparent or translucent flexible membrane or sheet. In a chamber gas pressure is applied to the sheet and, in turn, to all parts of the underlying resin and, while pressurized, the resin is exposed to light to cure it.
Inventors
- 👤 Eiichi Masuhara
- 👤 Shigeo Komiya
- 👤 Shin Makino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:06
CPC Classifications
A; A61; A61C; A61C19/00; A61C19/003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
95 words
A method for light curing of dental light-curing resins under pressure in a closed system, comprising the steps of: (a) placing the light-curing resin on a stone cast, (b) covering the resin with a transparent or translucent flexible membrane having an outside surface, (c) applying gas pressure in a range between 2 and 20 kg/cm 2 to the outside surface of the flexible membrane thereby uniformly transmitting the gas pressure onto all parts of the resin underlying the flexible membrane, and, while applying pressure, (d) exposing the resin to light to thereby cure the resin.
Claim 2
Independent Claim
95 words
A method for light curing of dental light-curing resins under pressure in a closed system, comprising the steps of: (a) placing the light-curing resin on a stone cast, (b) covering the resin with a transparent or translucent flexible membrane having an outside surface, (c) applying gas pressure in a range between 2 and 20 kg/cm 2 to the outside surface of the flexible membrane thereby uniformly transmitting the gas pressure onto all parts of the resin underlying the flexible membrane, and, while applying pressure, (d) exposing the resin to light to thereby cure the resin.
Claim 3
Dependent Claim
19 words
The method according to claim 1, wherein the transparent or translucent flexible membrane is made of a thermoplastic resin.
Claim 4
Dependent Claim
17 words
The method according to claim 2, wherein the thermoplastic resin is polyvinyl chloride or ethylene-vinyl acetate copolymer.
Claim 5
Dependent Claim
26 words
The method according to claim 2, further comprising the step of heating the membrane to make it more flexible and conformable before applying the gas pressure.
Claim 6
Dependent Claim
15 words
The method according to claim 4, wherein the heating is maintained during the light curing.
Claim 7
Dependent Claim
20 words
The method according to claim 1, 2, 3, 4 or 5 wherein visible light is used to cure the resin.
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) | 1995-04-14 | 1995-10-14 | 1996-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-14 | 1999-10-14 | 2000-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-14 | 2003-10-14 | 2004-04-14 | $7700.00 | Window Closed / Lapsed |