Patent US3813256A successfully refreshed from Google Patents.
US3813256A
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US
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Method of making a heat resistant,vapor free cooking utensil
Assignee: Cryplex Ind Inc
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Filing: 1971-06-24
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Granted: 1974-05-28
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Expires: 1991-06-24
Abstract
Abstract A FOOD-HEATING UTENSIL IS FORMED OF A HEAT RESPONSIVE GAS OR VAPOR RELEASING MATERIAL SUCH AS PAPER OR A THERMOSET CROSS-LINKED POLYESTER SUBSTRATE COATED OR ENCAPSULATED WITH A POLYSULFONE RESIN, AND IS CHARACTERIZED BY THE SUBSTANTIAL ABSENCE OF ANY GAS VAPOR RELEASE AT HIGH TEMPERATURES AND EXCELLENT SURFACE RELEASE PROPERTIES.
Inventors
- 👤 R Feinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:49
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/22; A; A47; A47J; A47J36/00; A47J36/02; A47J36/022
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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |