US2558139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental material and method
Assignee: L D CAULK Co
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Filing: 1947-08-26
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Granted: 1951-06-26
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Expires: 1967-08-26
Abstract
No abstract record available.
Inventors
- 👤 Frances E Knock
- 👤 John F Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:37
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/90; A61K6/80; A61K6/884; A61K6/887; Y; Y10; Y10S; Y10S528/00; Y10S528/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A DENTAL MATERIAL FOR MAKING DENTAL RESTORATIONS WHICH COMPRISES A MONOMER COMPONENT CONTAINING A TERTIARY PHENYL ETHANOL AMINE AND A POLYMERIZABLE LIQUID MONOMER COMPRISING METHYL METHACRYLATE, AND A SECOND COMPONENT FOR ADMIXTURE WITH SAID MONOMER COMPONENT AND CONTAINING A POLYMERIZATION CATALYST SELECTED FROM THE GROUP CONSISITNG OF THE PEROXIDE AND PERSULFATE CATALYSTS.
Claim 2
Dependent Claim
52 words
A DENTAL MATERIAL FOR MAKING DENTAL RESTORATIONS WHICH COMPRISES A MONOMER COMPONENT CONTAINING A TERTIARY PHENYL ETHANOL AMINE AND A POLYMERIZABLE LIQUID MONOMER COMPRISING METHYL METHACRYLATE, AND A SECOND COMPONENT FOR ADMIXTURE WITH SAID MONOMER COMPONENT AND CONTAINING A POLYMERIZATION CATALYST SELECTED FROM THE GROUP CONSISITNG OF THE PEROXIDE AND PERSULFATE CATALYSTS.
References Cited (Backward Citations)
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Cited
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US2452669A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |