US3148679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of forming casts
Assignee: Individual
•
Filing: 1962-06-14
•
Granted: 1964-09-15
•
Expires: 1982-06-14
Abstract
No abstract record available.
Inventors
- 👤 Harold L Witcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/07; A61F; A61F13/00; A61F13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN A PROCESS FOR FORMING A RELATIVELY RIGID SURGICAL CASE, THE STEPS OF (1) HOLDING A CLOTH AND A LOOSE AGGREGATE OF GROUND EXPANDED POLYSTYRENE IN CONTACT, (2) PLACING SAID CLOTH AND POLYSTYRENE IN INTIMATE CONTACT WITH AN AGENT ADAPTED TO REDUCE SAID POLYSTYRENE TO A READILY FORMABLE PLASTIC STATE, WHEREBY A PLIABLE COMPOSITE SHEET IS FORMED THEREFROM, (3) SHAPING SAID COMPOSITE SHEET INTO THE DESIRED FORM, AND (4) EVAPORATING SAID AGENT UNTIL SAID COMPOSITE SHEET WILL RETAIN THE DESIRED SHAPE.
Claim 2
Dependent Claim
81 words
IN A PROCESS FOR FORMING A RELATIVELY RIGID SURGICAL CASE, THE STEPS OF (1) HOLDING A CLOTH AND A LOOSE AGGREGATE OF GROUND EXPANDED POLYSTYRENE IN CONTACT, (2) PLACING SAID CLOTH AND POLYSTYRENE IN INTIMATE CONTACT WITH AN AGENT ADAPTED TO REDUCE SAID POLYSTYRENE TO A READILY FORMABLE PLASTIC STATE, WHEREBY A PLIABLE COMPOSITE SHEET IS FORMED THEREFROM, (3) SHAPING SAID COMPOSITE SHEET INTO THE DESIRED FORM, AND (4) EVAPORATING SAID AGENT UNTIL SAID COMPOSITE SHEET WILL RETAIN THE DESIRED SHAPE.
References Cited (Backward Citations)
US2489252A
Cited
US2744291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |