Patent US3845009A successfully refreshed from Google Patents.
US3845009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cement compositions employing novel methacrylate monomer
Assignee: Johnson and Johnson
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Filing: 1973-10-29
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Granted: 1974-10-29
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Expires: 1993-10-29
Abstract
Abstract 1. IN A DIRECT DENTAL FILLING SYSTEM UTILIZING A BINDER ND FINELY DIVIDED SOLID FILLER HAVING AN AVERAGE PARTICLE SIZE OF SUBMICRON TO ABOUT 25 MICRONS WITH THE AVERAGE PARTICLE SIZE BEING WITHIN THE RANGE OF ABOUT 15-30 MICRONS, AN INTIMATE MIX OF MONOMER BINDER AND FINELY DIVIDED INORGANIC FILLER WITH THE FILLER BEING PRESENT IN AN AMOUNT IN EXCESS OF 50% BY WEIGHT OF SAID MIX AND AT LEAST 10% BY WEIGHT OF SAID MONOMER BINDER CONSISTING OF THE MONOMER 1,3-BIS(2,3-DI(METHACRYLOXY)-PROPOXY)= BENZENE.
Inventors
- 👤 R Gander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:02
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/20; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887; C07; C07C; C07C67/00; C07C67/14; C07C67/24; C07C67/26; C08F20/26; C08F20/30; C08K; C08K3/00; C08K3/01; C08K3/013; C08K3/34; C08K3/36; C08K5/00; C08K5/0008; C08K5/0025; C09; C09J; C09J4/00; Y; Y10; Y10S; Y10S528/00; Y10S528/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A DIRECT DENTAL FILLING SYSTEM UTILIZING A BINDER ND FINELY DIVIDED SOLID FILLER HAVING AN AVERAGE PARTICLE SIZE OF SUBMICRON TO ABOUT 25 MICRONS WITH THE AVERAGE PARTICLE SIZE BEING WITHIN THE RANGE OF ABOUT 15-30 MICRONS, AN INTIMATE MIX OF MONOMER BINDER AND FINELY DIVIDED INORGANIC FILLER WITH THE FILLER BEING PRESENT IN AN AMOUNT IN EXCESS OF 50% BY WEIGHT OF SAID MIX AND AT LEAST 10% BY WEIGHT OF SAID MONOMER BINDER CONSISTING OF THE MONOMER 1,3-BIS(2,3-DI(METHACRYLOXY)-PROPOXY)= BENZENE.
Claim 2
Dependent Claim
82 words
IN A DIRECT DENTAL FILLING SYSTEM UTILIZING A BINDER ND FINELY DIVIDED SOLID FILLER HAVING AN AVERAGE PARTICLE SIZE OF SUBMICRON TO ABOUT 25 MICRONS WITH THE AVERAGE PARTICLE SIZE BEING WITHIN THE RANGE OF ABOUT 15-30 MICRONS, AN INTIMATE MIX OF MONOMER BINDER AND FINELY DIVIDED INORGANIC FILLER WITH THE FILLER BEING PRESENT IN AN AMOUNT IN EXCESS OF 50% BY WEIGHT OF SAID MIX AND AT LEAST 10% BY WEIGHT OF SAID MONOMER BINDER CONSISTING OF THE MONOMER 1,3-BIS(2,3-DI(METHACRYLOXY)-PROPOXY)= BENZENE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |