US4756047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for removing organic substance from substrate
Assignee: Dainippon Screen Manufacturing Co Ltd
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Filing: 1986-10-15
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Granted: 1988-07-12
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Expires: 2006-10-15
Abstract
Abstract An apparatus for removing organic substances from a substrate, including ultraviolet lamps provided above a horizontal hot plate on which a substrate is placed; an ozone blow-off pipe which blows ozone downward, provided at a position appropriately distant from the surface of the hot plate on which the substrate is placed, the ozone blow-off pipe being so arranged as to be reciprocated relative and parallel to the surface of the hot plate.
Inventors
- 👤 Noriyuki Hayashi
- 👤 Hiromi Murayama
- 👤 Yukihiko Ishino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:50
CPC Classifications
H; H10; H10P; H10P72/00; H10P72/04; H10P72/0402; H10P72/0406; B; B08; B08B; B08B7/00; B08B7/0035; B08B7/0057; B08B7/04; G; G03; G03F; G03F7/00; G03F7/26; G03F7/42; H10P50/00; H10P50/20; H10P50/28; H10P50/286; H10P50/287
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
78 words
An apparatus for removing organic substances from a substrate, comprising a hot plate defining a support surface for receiving the substrate and heating that substrate to a desired temperature; ultraviolet lamps fixedly arranged above said hot plate and disposed in parallel with said surface of said hot plate; and an ozone blow-off pipe provided with downwardly directed toward said surface openings; said ozone blow-off pipe being reciprocatable relative to and parallel with said surface of said hot plate.
Claim 2
Independent Claim
78 words
An apparatus for removing organic substances from a substrate, comprising a hot plate defining a support surface for receiving the substrate and heating that substrate to a desired temperature; ultraviolet lamps fixedly arranged above said hot plate and disposed in parallel with said surface of said hot plate; and an ozone blow-off pipe provided with downwardly directed toward said surface openings; said ozone blow-off pipe being reciprocatable relative to and parallel with said surface of said hot plate.
Claim 3
Dependent Claim
123 words
The apparatus according to claim 1, wherein a pair of grooves are formed in said surface of said hot plate along a direction in which said substrate is transported; a pair of walking beams are provided such that they can be located in or raised above said grooves and can be reciprocated in the direction in which the substrate is transported to convey the substrate in its direction of transport when raised above said grooves; and said ozone blow-off pipe is mounted on said walking beams such that said pipe extends traversely of the direction in which said substrate is transported and that said pipe is disposed over the substrate placed on the hot plate when said walking beams are in said grooves.
Claim 4
Dependent Claim
26 words
The apparatus according to claim 2, wherein ozone gas is sprayed from the ozone blow-off pipe while the walking beams are reciprocated while in the grooves.
Claim 5
Dependent Claim
50 words
The apparatus according to claim 2 or 3, wherein a plurality of hot plates are arranged along the direction in which the substrate is transported; a pair of said walking beams are common to said hot plates; and each of said hot plates is associated with a ozone blow-off pipe.
Claim 6
Dependent Claim
54 words
The apparatus according to claim 2, wherein a pair of beams parallel to said pair of the walking beams are fitted to arms extending from the respective ends of said walking beams toward the outer side of the hot plates; and said ozone blow-off pipe is installed on and across said pair of beams.
Claim 7
Dependent Claim
39 words
The apparatus according to claim 1, wherein an ultraviolet-transmissive plate member, substantially parallel to said hot plate surface is attached to the ozone blow-off pipe forward and backward in the direction of substrate transport with respect to the pipe.
Claim 8
Dependent Claim
15 words
The apparatus according to claim 6, wherein said ultraviolet-transmissive plate member is made of quartz.
Claim 9
Dependent Claim
28 words
The apparatus according to claim 1, wherein a suction opening in a suction chamber for exhaustion of the gas is provided at the periphery of the hot plate.
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) | 1991-07-12 | 1992-01-11 | 1992-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-12 | 1996-01-11 | 1996-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-12 | 2000-01-11 | 2000-07-12 | $7700.00 | Window Closed / Lapsed |