US4421795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying a coating of polyarylene sulphide to a cooking utensil
Assignee: Federal Mogul Engineering Ltd
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Filing: 1981-07-02
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Granted: 1983-12-20
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Expires: 2001-07-02
Abstract
Abstract A method of applying a coating of polyarylene sulphide to a cooking utensil in which an intimate mixture of a polyarylene sulphide with an aryl ester of an aryl alcohol is applied to the surface of the utensil and subsequently heated to evaporate the ester and cure the coating. The mixture can be a dry powder mixture, a wet powder mixture, a paste, a suspension a liquid solution or a solid solution. The preferred mixture comprises polyphenylene sulphide and benzyl benzoate.
Inventors
- 👤 Glyndwr J. Davies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:32
CPC Classifications
B; B05; B05D; B05D5/00; B05D5/08; A; A47; A47J; A47J36/00; A47J36/02; C; C09; C09D; C09D181/00; C09D181/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
54 words
A method of applying a coating of polyarylene sulphide to a cooking utensil which comprises: applying a mixture of polyarylene sulphide and an aryl ester of an aryl alcohol to the surface of a backing for forming a cooking utensil; and subsequently heating said mixture to evaporate said ester and to cure said coating.
Claim 2
Independent Claim
54 words
A method of applying a coating of polyarylene sulphide to a cooking utensil which comprises: applying a mixture of polyarylene sulphide and an aryl ester of an aryl alcohol to the surface of a backing for forming a cooking utensil; and subsequently heating said mixture to evaporate said ester and to cure said coating.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein said polyarylene sulphide is polyphenylene sulphide.
Claim 4
Dependent Claim
11 words
The method of claim 1 wherein said ester is benzyl benzoate.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein said mixture is a dry powder mixture.
Claim 6
Dependent Claim
15 words
The method of claim 1 wherein said mixture is in the form of a paste.
Claim 7
Dependent Claim
22 words
The method of claim 1 wherein said polyarylene sulphide is in suspension in said ester; said ester being in the liquid phase.
Claim 8
Dependent Claim
14 words
The method of claim 1 wherein said polyarylene sulphide is dissolved in said ester.
Claim 9
Dependent Claim
16 words
The method of claim 1 wherein said ester is in solid solution in said polyarylene sulphide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |