US3836624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing three-dimensional foam plastic forms
Assignee: Individual
•
Filing: 1972-11-06
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Granted: 1974-09-17
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Expires: 1992-11-06
Abstract
Abstract A METHOD FOR PRODUCING THREE-DIMENSIONAL FORMS OF FOAM PLASTIC WHEREIN A HEAT-RESISTANT MASK IS APPLIED TO A SURFACE OF A HEAT-COLLAPSIBLE FOAM BODY, AND THE MASKBEARING BODY IS EXPOSED TO A SPACED SOURCE OF HEAT ENERGY FOR A TIME SUFFICIENT TO COLLAPSE THE UNMASKED AREAS OF THE FOAM.
Inventors
- 👤 B Ferris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:39
CPC Classifications
B; B44; B44C; B44C3/00; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/5627; B29C44/5636; B41; B41M; B41M1/00; B41M1/26; B41M1/30; B41M5/00; B41M5/26; B41M5/36; B41M7/00; B44C3/04; B44C3/044; G; G09; G09F; G09F7/00; G09F7/16; G09F7/165
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |