Patent US3829973A successfully refreshed from Google Patents.
US3829973A
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Dental and surgical bonding-filling material
Assignee: Mochida Pharmaceutical Co Ltd
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Filing: 1973-04-23
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Granted: 1974-08-20
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Expires: 1993-04-23
Abstract
Abstract Dental and surgical bonding and filling material characterized by the fact that it comprises at least one polymerizable acrylic acid or methacrylic acid derivative, a vinyl polymer in powder form, and a hardening agent which is a product of the reaction between a trialkylboron and 0.3 - 0.9 mol of oxygen.
Inventors
- 👤 E Masuhara
- 👤 M Baba
- 👤 S Tanaka
- 👤 N Tarumi
- 👤 N Nakabayashi
- 👤 E Mochida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:02
CPC Classifications
C; C08; C08F; C08F291/00; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
31 words
Material as claimed in claim 1 in which trialkylboron is selected from trialkylboron expressed by the general formula R3B, wherein R represents an alkyl group having two to eight carbon atoms.
Claim 2
Dependent Claim
35 words
Material as claimed in claim 1 in which said vinyl polymer is in powdered form and selected from the group consisting of styrene, vinyl chloride, and homopolymers and copolymers of acrylic acid and methacrylic acid.
Claim 3
Dependent Claim
15 words
Material as claimed in claim 1 which also comprises at least one granular inorganic filler.
Claim 4
Independent Claim
50 words
The method of making a dental and surgical bonding and filling material which comprises the step of polymerizing a product selected from the group consisting of acrylic acid and methacrylic acid derivative, using the reaction product of trialkylboron with from 0.3 to 0.9 mol of oxygen as the hardening agent.
Claim 5
Independent Claim
38 words
The method of making a dental and surgical bonding and filling material which comprises the steps of reacting a trialkylboron with from 0.3 to 0.9 mol of oxygen while maintaining the temperature of trialkylboron below its ignition point.
Claim 6
Independent Claim
67 words
The method of bonding a piece of synthetic resin to bone or tooth material which comprises the step of first coating the surface of said material with an Alpha -methacryloxy-propyltrimethoxysilane solution, then coating said surface with the reaction product of an acrylic or methacrylic acid with 0.3 to 0.9 mol of oxygen, and finally pressing said piece of resin against said surface until said reaction product hardens.
Claim 7
Dependent Claim
23 words
The method claimed in claim 7 which comprises the step of etching said surface with phosphoric acid before being coated with said solution.
References Cited (Backward Citations)
US3469317A
Cited
US3462839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |