US3604413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of stiff supporting bandages containing a thermoplastic moulding composition
Assignee: Hoechst AG
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Filing: 1969-05-15
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Granted: 1971-09-14
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Expires: 1989-05-15
Abstract
Abstract Copolymers of trioxane with determined cyclic formals are used for making stiff supporting bandages. The thermoplastic-moulding compositions are applied in the plasticized state without a carrier material or together with a fabric to the part of the body to be treated and then allowed to solidify.
Inventors
- 👤 Karlheinz Burg
- 👤 Harald Cherdron
- 👤 Johannes Brandrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:20
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/07; A61F; A61F13/00; A61F13/04; C; C08; C08G; C08G2/00; C08G2/18; C08G2/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
In a process for making a stiff supporting bandage which comprises coating a thermoplastic material onto a fabric, heating the thermoplastic material to a plastic state, applying the heated, coated fabric to the part of the body to be supported and protected, and allowing it to solidify to a rigid state, the improvement wherein the thermoplastic material is a copolymer of 1,3,5-trioxane and cyclic formal having the formula
References Cited (Backward Citations)
US3490444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |