Patent US3867249A successfully refreshed from Google Patents.
US3867249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic cooking film
Assignee: Colgate Palmolive Co
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Filing: 1972-09-25
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Granted: 1975-02-18
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Expires: 1992-09-25
Abstract
Abstract Cooking films and methods for prodcuing same, having the characteristic of eliminating or substantially reducing the incidence of ''''bumping.'''' Plastic film material suitable for cooking foods at temperatures between 325* F. is surface roughened by methods including embossing, scoring, and the addition of particulate matter to the film.
Inventors
- 👤 Peter T Vitale
- 👤 Leonel M Paixao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:28
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457; Y10T428/24595; Y10T428/31504; Y10T428/31786
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
116 words
A WRAPPING MATERIAL FOR SURROUNDING A FOOD ARTICLE DURING OVEN COOKING SAID WRAPPING MATERIAL COMPRISING A PLASTIC HEAT RESISTANT, FILM MATERIAL HAVING A THICKNESS FROM ABOUT 0.25 TO ABOUT 1.0 MIL, MEANS FOR MAINTAINING SAID FILM MATERIAL IN CLOSE PROXIMITY TO SAID FOOD ARTICLE, SAID FILM AMTERIAL HAVING AN INNER SURFACE AND AN OUTER SURFACE, SAID INNER SURFACE INCLUDING A PATTERN OF IRREGULARITIES HAVING A DENSITY FROM ABOUT 100 TO 1,000 PER SQUARE INCH AND INCLUDING ROUNDED PREJECTIONS EXTENDING FROM SAID INNER SURFACE FROM ABOUT 20 TO ABOUT 100 MILS WHEREBY SAID WRAPPING MATERIALS RESISTANT TO BUMPING WHEN A LIQUID OIL-WATER COMPONENT IS PRESENT IN A RATIO OF OIL TO WATER FROM ABOUT 1:4 TO 40:1.
Claim 2
Dependent Claim
116 words
A WRAPPING MATERIAL FOR SURROUNDING A FOOD ARTICLE DURING OVEN COOKING SAID WRAPPING MATERIAL COMPRISING A PLASTIC HEAT RESISTANT, FILM MATERIAL HAVING A THICKNESS FROM ABOUT 0.25 TO ABOUT 1.0 MIL, MEANS FOR MAINTAINING SAID FILM MATERIAL IN CLOSE PROXIMITY TO SAID FOOD ARTICLE, SAID FILM AMTERIAL HAVING AN INNER SURFACE AND AN OUTER SURFACE, SAID INNER SURFACE INCLUDING A PATTERN OF IRREGULARITIES HAVING A DENSITY FROM ABOUT 100 TO 1,000 PER SQUARE INCH AND INCLUDING ROUNDED PREJECTIONS EXTENDING FROM SAID INNER SURFACE FROM ABOUT 20 TO ABOUT 100 MILS WHEREBY SAID WRAPPING MATERIALS RESISTANT TO BUMPING WHEN A LIQUID OIL-WATER COMPONENT IS PRESENT IN A RATIO OF OIL TO WATER FROM ABOUT 1:4 TO 40:1.
Claim 3
Dependent Claim
21 words
The wrapping material of claim 1, wherein said plastic film is selected from the group consisting of nylon and polyester films.
Claim 4
Dependent Claim
13 words
The wrapping material of claim 2, wherein said plastic film is polyethylene terephthalate.
Claim 5
Dependent Claim
16 words
The wrapping material of claim 1, wherein said surface irregularities include a regular pattern of embossments.
Claim 6
Dependent Claim
21 words
The wrapping material of claim 1, wherein said plastic film is in the form of a flat unsupported single ply sheet.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |