US3701665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of sulfur extraction from poly(arylene sulfide) coated cookware
Assignee: Phillips Petroleum Co
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Filing: 1970-12-10
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Granted: 1972-10-31
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Expires: 1990-12-10
Abstract
Abstract COOKWARE WHICH IS TO COME IN CONTACT WITH FOOD SUBSTANCES WHICH CAN EXTRACT ORGANIC SULFUR IS COATED WITH A COMPOSITION COMPRISING POLY(ARYLENE SULFIDE) AND 330 PARTS OF A FLUOROCARBON POLYMER PER 100 PARTS OF SAID POLY(ARYLENE SULFIDE). THE RESULTING COATING IS HIGHLY RESISTANT TO EXTRACTION OF ORGANIC SULFUR.
Inventors
- 👤 Monford D Grimes
- 👤 James T Edmonds Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:21
CPC Classifications
A; A47; A47J; A47J36/00; A47J36/02; C; C09; C09D; C09D181/00; C09D181/02
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |