US3754110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A susceptor having grooves
Assignee: US Philips Corp
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Filing: 1972-02-16
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Granted: 1973-08-21
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Expires: 1992-02-16
Abstract
Abstract The invention relates to a susceptor for heating bodies by means of high frequency energy. The lower side of the susceptor comprises a profile which consists of longitudinal grooves present near the side surfaces. By means of said grooves on the lower side, a homogeneous temperature distribution is obtained on the upper side transversely over the susceptor.
Inventors
- 👤 Dongen C Van
- 👤 J Hofsteede
- 👤 J Terburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:31
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/10; H05B6/105; C; C30; C30B; C30B25/00; C30B25/02; C30B25/12; C30B31/00; C30B31/06; C30B31/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
96 words
A susceptor for uniformly heating in a high frequency field a substance in contact therewith comprising a body having two opposed major surfaces, one major surface having two opposed edges and two grooves, each groove being substantially coextensive with and respectively spaced adjacent to said opposed edges, whereby when said body is in a high frequency field, said grooves effectively increase the heat generated by said field in said body in the region of said grooves resulting in a more substantially homogeneous heat distribution at the other major surface and in a substance in contact therewith.
Claim 2
Dependent Claim
96 words
A susceptor for uniformly heating in a high frequency field a substance in contact therewith comprising a body having two opposed major surfaces, one major surface having two opposed edges and two grooves, each groove being substantially coextensive with and respectively spaced adjacent to said opposed edges, whereby when said body is in a high frequency field, said grooves effectively increase the heat generated by said field in said body in the region of said grooves resulting in a more substantially homogeneous heat distribution at the other major surface and in a substance in contact therewith.
Claim 3
Dependent Claim
17 words
A susceptor as set forth in claim 1 wherein said opposed major surfaces are flat parallel planes.
Claim 4
Dependent Claim
41 words
A susceptor as set forth in claim 1 wherein said body is rectangularly shaped and said grooves are parallel with said opposed edges and respectively spaced from said edges by a distance less than the distance between said opposed major surfaces.
Claim 5
Dependent Claim
39 words
A susceptor as set forth in claim 3 wherein said grooves are rectangularly shaped with a width less than the distance between said opposed major surfaces and a depth less than half the distance between said opposed major surfaces.
Claim 6
Dependent Claim
15 words
A susceptor as set forth in claim 1 wherein said body is composed of graphite.
Claim 7
Dependent Claim
25 words
A susceptor as set forth in claim 1 adapted to be placed in cOntact with a semiconductive body for homogeneous heating of said semiconductive body.
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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |