US4713512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave stable tableware
Assignee: WC HERAEUS A WEST GERMAN CORP GmbH
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Filing: 1986-08-18
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Granted: 1987-12-15
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Expires: 2006-08-18
Abstract
Abstract Microwave-resistant tableware of siliceous material. The tableware has a precious metal decoration which consists of a pattern of dots. The distance between two adjacent dots amounts to at least 0.2 mm, and the maximum breadth of a dot amounts to 5 mm.
Inventors
- 👤 Wolfgang Wild
- 👤 Joachim Straub
- 👤 Gunter Landgraf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:04
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; A; A47; A47G; A47G19/00; A47J; A47J36/00; A47J36/02; A47J36/027; B; B44; B44C; B44C1/00; B44C1/04; B44F; B44F1/00; B44F9/00; B44F9/10; C04B41/45; C04B41/4572; C04B41/80; C04B41/81; Y; Y10; Y10S; Y10S99/00; Y10S99/14
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
66 words
Microwave stable tableware comprising a body made of siliceous material and having applied thereto a precious metal decoration of a plurality of markings, wherein said markings are separated by a distance of at least 0.2 mm from each other and the maximum extension of each of said markings is about 5 mm, wherein said decorated tableware can be exposed to a microwave field without destructive arcing.
Claim 2
Dependent Claim
66 words
Microwave stable tableware comprising a body made of siliceous material and having applied thereto a precious metal decoration of a plurality of markings, wherein said markings are separated by a distance of at least 0.2 mm from each other and the maximum extension of each of said markings is about 5 mm, wherein said decorated tableware can be exposed to a microwave field without destructive arcing.
Claim 3
Dependent Claim
21 words
Tableware according to claim 1, characterized in that the extension of each marking is from about 0.3 to about 4 mm.
Claim 4
Dependent Claim
20 words
Tableware according to claim 1, characterized in that the precious metal decoration comprises markings which are substantially equal in shape.
Claim 5
Dependent Claim
14 words
Tableware according to claim 1, characterized in that said markings have rounded marginal areas.
Claim 6
Dependent Claim
20 words
Tableware according to claim 4, characterized in that said markings are in the form of a circular or elliptical disk.
Claim 7
Dependent Claim
45 words
Tableware according to claim 1, characterized in that said markings amount to up to about 60% of the total surface area of said decoration, said surface area defined by a boundary, said boundary determined by placement of said markings on the surface of said tableware.
Claim 8
Dependent Claim
19 words
Tableware according to claim 1, characterized in that the precious metal decoration comprises fired gold, platinum, or palladium-containing coating.
Claim 9
Dependent Claim
21 words
Tableware according to claim 7, characterized in that the thickness of said marking is from about 0.0001 to about 0.1 mm.
Claim 10
Dependent Claim
21 words
Tableware according to claim 8, characterized in that the thickness of said markings is from about 0.0001 to about 0.001 mm.
Claim 11
Dependent Claim
10 words
Tableware of claim 1, wherein said siliceous material is porcelain.
Claim 12
Dependent Claim
10 words
Tableware of claim 1, wherein said siliceous material is glass.
Claim 13
Dependent Claim
10 words
Tableware of claim 1, wherein said siliceous material is stoneware.
Claim 14
Dependent Claim
10 words
Tableware of claim 1, wherein said siliceous material is ceramic.
References Cited (Backward Citations)
USD266817S
Cited
US4486640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |