Patent US4369346A successfully refreshed from Google Patents.
US4369346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave baking utensil
Assignee: White Consolidated Industries Inc
•
Filing: 1979-06-20
•
Granted: 1983-01-18
•
Expires: 1999-06-20
Abstract
Abstract A microwave baking utensil comprises a unitary body of a porous ceramic material having a cooking surface on its upper side, and pattern of a compound of a Group III, IV or V material ion implanted in its lower support surface. The ion implanted material has an n-type impurity, and a p-type impurity therein.
Inventors
- 👤 Bill J. Hart
- 👤 Billy E. Smith
- 👤 Maverine H. Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:51
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/647; H05B6/6491; H05B6/6494; A; A47; A47J; A47J36/00; A47J36/02; A47J36/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
110 words
A utensil for microwave baking comprising a unitary body of a porous ceramic material having an upper cooking surface and an underside support surface, and an open pattern of a compound of an inorganic solid carrier and being ion implanted on said underside support surface, said carrier being a material selected from the group consisting of Groups III, IV and V of the periodic table, said material having an n-type impurity that can exist in a valence state higher than the carrier and a p-type impurity that can exist at a valence state lower than said carrier, said compound penetrating the molecules of said ceramic material at said underside surface.
Claim 2
Dependent Claim
110 words
A utensil for microwave baking comprising a unitary body of a porous ceramic material having an upper cooking surface and an underside support surface, and an open pattern of a compound of an inorganic solid carrier and being ion implanted on said underside support surface, said carrier being a material selected from the group consisting of Groups III, IV and V of the periodic table, said material having an n-type impurity that can exist in a valence state higher than the carrier and a p-type impurity that can exist at a valence state lower than said carrier, said compound penetrating the molecules of said ceramic material at said underside surface.
Claim 3
Dependent Claim
16 words
The utensil of claim 1 wherein said upper cooking surface is flat substantially throughout its extent.
Claim 4
Dependent Claim
17 words
The utensil of claim 1 wherein the underside of said body is provided with raised support ridges.
Claim 5
Dependent Claim
14 words
The utensil of claim 1 wherein said pattern has a plurality of concentric circles.
Claim 6
Dependent Claim
20 words
The utensil of claim 4 wherein said concentric circles are joined by radially extending sections of said ion implanted compound.
Claim 7
Dependent Claim
18 words
The utensil of claim 1 wherein said pattern is comprised of a plurality of separate and discrete areas.
Claim 8
Dependent Claim
14 words
The utensil of claim 1 wherein said pattern is free of external conductive connections.
Claim 9
Dependent Claim
18 words
The utensil of claim 1 wherein said pattern has a thickness of from about 0.1 to 5 microns.
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) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |