US3679435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sausage casings of synthetic high-polymer thermoplastic material
Assignee: Kalle GmbH and Co KG
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Filing: 1968-09-25
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Granted: 1972-07-25
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Expires: 1988-09-25
Abstract
Abstract AT WHICH THE TUBE LOSSES ITS SHRINKABILITY WHILE MAINTAINING CONDITIONS PREVENTING SHRINKAGE. A PLASTIC SAUSAGE CASING MATERIAL WHICH IS CONVERTIBLE INTO AN ANNULAR CASING AND TO A PROCESS FOR THE MANUFACTURE OF SUCH A CASING IN WHICH PROCESS A TUBE OF SYNTHETIC HIGH-POLYMER THERMOPLASTIC MATERIAL, WHICH HAS BEEN LONGITUDINALLY STRETCHED AND THUS IS SHRINKABLE IN ITS LONGITUDINAL DIRECTION BY HEATING, IS FILLED WITH A GAS AND THE GAS-FILLED TUBE IS HEATED ON ONE LONGITUDINAL SIDE ONLY, WHILE PREVENTING LONGITUDINAL SHRINKAGE, TO A TEMPERATURE
Inventors
- 👤 Ludwig Klenk
- 👤 Hans Strutzel
- 👤 Richard Sobottka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:12
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/02; B29C61/025; A; A22; A22C; A22C13/00; A22C13/0013; B29C55/00; B29C55/28; B29L; B29L2023/00; B29L2023/001; B29L2023/002; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1324
Claims Analysis
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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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |