Patent US4863547A successfully refreshed from Google Patents.
US4863547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Equipment for heating and cooling substrates for coating photo resist thereto
Assignee: Tazmo Co Ltd
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Filing: 1988-05-24
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Granted: 1989-09-05
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Expires: 2008-05-24
Abstract
Abstract Equipment for cooling semi-conductor substrates and printed circuit boards after coating photo resist thereon including heating the substrate for treatment. A heating block furnished with a heating plate is provided in a holding frame device on which the substrate is placed and is so mounted that the heating block can be elevated and lowered vertically therein. The heating block further includes a cooling block having a cooling plate which can be reciprocated from one open side of the holding frame device to the interior thereof, the cooling plate being vertically elevated and lowered in the holding frame equipment when the cooling block is in the holding frame device.
Inventors
- 👤 Hitoshi Shidahara
- 👤 Syozi Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:37
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/16; G03F7/168
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
A heat treatment equipment for substrates comprising: (a) a holding frame for holding substrates in a horizontal plane; (b) heating means disposed beneath said holding frame, said heating means including a temperature elevating member and means to reciprocally move said temperature elevating member toward and away from said holding frame in a vertical direction; and (c) cooling means disposed beneath said holding frame, said cooling means including a temperature lowering member, means to reciprocally move said temperature lowering member toward and away from said holding frame in a direction parallel to said horizontal plane and normal to said first predetermined direction and means to reciprocally move said temperature lowering member toward and away from said holding frame in a vertical direction.
Claim 2
Dependent Claim
121 words
A heat treatment equipment for substrates comprising: (a) a holding frame for holding substrates in a horizontal plane; (b) heating means disposed beneath said holding frame, said heating means including a temperature elevating member and means to reciprocally move said temperature elevating member toward and away from said holding frame in a vertical direction; and (c) cooling means disposed beneath said holding frame, said cooling means including a temperature lowering member, means to reciprocally move said temperature lowering member toward and away from said holding frame in a direction parallel to said horizontal plane and normal to said first predetermined direction and means to reciprocally move said temperature lowering member toward and away from said holding frame in a vertical direction.
Claim 3
Dependent Claim
20 words
A heat treatment equipment as set forth in claim 1 further including a spherical bushing supporting said heat producing member.
Claim 4
Dependent Claim
20 words
A heat treatment equipment as set forth in claim 1 further including a spherical bushing supporting said temperature lowering member.
Claim 5
Dependent Claim
26 words
A heat treatment equipment as set forth in claim 1 wherein said holding frame includes plural support columns supporting said holding frame in a fixed position.
Claim 6
Dependent Claim
57 words
A heat treatment equipment as set forth in claim 4 wherein said cooling means comprises a guide rail for guiding said temperature lowering member and said means to reciprocally move said temperature lowering member is a screw shaft, said cooling means further including a shutter as its underside to prevent heat radiation thereto from said heating means.
References Cited (Backward Citations)
US4717645A
Cited
US4543147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |