Patent US3662057A successfully refreshed from Google Patents.
US3662057A
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Method of forming an expanded polyethylene cast on a living body
Assignee: BXL Plastics Ltd
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Filing: 1969-10-21
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Granted: 1972-05-09
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Expires: 1989-10-21
Abstract
Abstract METHOD OF FORMING A CAST FOR A LIVING BODY FROM A SHEET OF PARTIALLY CROSS-LINKED NITROGEN EXPANDED LOW DENSITY POLYETHYLENE HAVING A THICKNESS OF BETWEEN ABOUT 0.3 CENTIMETERS AND ABOUT 2.5 CENTIMETERS. THE METHOD COMPRISES HEATING THE SHEET TO A TEMPERATURE BETWEEN 130*C. AND 150*C. TO RENDER IT PLIABLE, THEN BRINGING THE SHEET INTO CONTACT WITH A PORTION OF A LIVING BODY, SHAPING IT SO AS TO COMPLEMENT THE PORTION OF THE LIVING BODY AND COOLING THE SHEET TO CAUSE IT TO RESUME ITS ORGINAL RIGIDITY.
Inventors
- 👤 Joseph George Webster
- 👤 William Henry Tuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:48
CPC Classifications
B; B32; B32B; B32B27/00; A; A61; A61F; A61F13/00; A61F13/04; A61L; A61L15/00; A61L15/07; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1204; B29C44/34; B29C44/56; B29C44/5627; B29C44/5636; B29L; B29L2031/00; B29L2031/753
Claims Analysis
Total Claims: 0
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |