Plaster of paris composition
Abstract
Abstract A SETTABLE COMPOSITION AND A CAST-FORMING MATERIAL COMPRISING THE COMPOSITION BONDED TO A FLEXIBLE CARRIER ARE PROVIDED FOR MAKING ORTHOPEDIC CASTS. THE COMPOSITION AND THE MATERIAL, WHEN WETTED, EXHIBIT A SMOOTH AND CREAMY TEXTURE, AND AN ORTHOPEDIC CAST, FORMED BY APPLYING THE MATERIAL, EXHIBITS HIGH "GREEN STRENGTH" (AS MEASURED ONE HOUR AFTER CAST APPLICATION). THE SETTABLE COMPOSITION COMPRISES PLASTER OF PARIS AND A THERMOPLASTIC, WATER-SOLUBLE RESIN OR A MIXTURE OF RESINS OF EXTREMELY HIGH MOLECULAR WEIGHT AND HIGH DEGREE OF CRYSTALLINITY AND PREFERABLY RESINOUS MIXTURES OF POLY(ETHYLENE OXIDE) HAVING AVERAGE MOLECULAR WEIGHTS RANGING FROM ABOUT 100,000 TO ABOUT 4,000,000.
Inventors
- 👤 J Boricheski
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |