US2567979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental impression compositions
Assignee: Cosmos Dental Products Inc
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Filing: 1947-08-05
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Granted: 1951-09-18
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Expires: 1967-08-05
Abstract
No abstract record available.
Inventors
- 👤 Philander B Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:45
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0016; A; A61; A61K; A61K6/00; A61K6/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A DENTAL IMPRESSION MATERIAL FORMED BY THOROUGHLY MIXING TOGETHER AT ROOM TEMPERATURE AT THE TIME OF NEED FOR SAID MATERIAL, A POWDERED VINYL CHLORIDE-VINYL ACETATE COPOLYMER CONTAINING BETWEEN 86% AND 85% VINYL CHLORIDE AND 14% TO 5% VINYL ACETATE AND A PLASTICIZING LIQUID CONTAINING BETWEEN 20% AND 60% OF DIBUTYL PHTHALATE AND 80% TO 40% OF AN ORGANIC LIQUID MODIFYING AGENT CAPABLE OF PROMOTING THE ACTION OF THE PLASTICIZER ON THE COPOLYMER TO CAUSE SAID RESULTANT MATERIAL TO ATTAIN AN ELASTOMERIC STATE WITHIN A PRACTICABLE WORKING TIME RANGE, SAID MODIFYING AGENT COMPRISING CARBON TETRACHLORIDE AND AT LEAST ONE OF THE SOLVENTS SELECTED FROM THE GROUP CONSISTING OF ACETONE, ETHYL ACETATE AND CHLOROFORM, THE COPOLYMER AND THE PLASTICIZING LIQUID BEING USED IN THE RATIO OF APPROXIMATELY 6 GRAMS OF COPOLYMER TO 10 CC. OF LIQUID.
Claim 2
Dependent Claim
134 words
A DENTAL IMPRESSION MATERIAL FORMED BY THOROUGHLY MIXING TOGETHER AT ROOM TEMPERATURE AT THE TIME OF NEED FOR SAID MATERIAL, A POWDERED VINYL CHLORIDE-VINYL ACETATE COPOLYMER CONTAINING BETWEEN 86% AND 85% VINYL CHLORIDE AND 14% TO 5% VINYL ACETATE AND A PLASTICIZING LIQUID CONTAINING BETWEEN 20% AND 60% OF DIBUTYL PHTHALATE AND 80% TO 40% OF AN ORGANIC LIQUID MODIFYING AGENT CAPABLE OF PROMOTING THE ACTION OF THE PLASTICIZER ON THE COPOLYMER TO CAUSE SAID RESULTANT MATERIAL TO ATTAIN AN ELASTOMERIC STATE WITHIN A PRACTICABLE WORKING TIME RANGE, SAID MODIFYING AGENT COMPRISING CARBON TETRACHLORIDE AND AT LEAST ONE OF THE SOLVENTS SELECTED FROM THE GROUP CONSISTING OF ACETONE, ETHYL ACETATE AND CHLOROFORM, THE COPOLYMER AND THE PLASTICIZING LIQUID BEING USED IN THE RATIO OF APPROXIMATELY 6 GRAMS OF COPOLYMER TO 10 CC. OF LIQUID.
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) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |