US4965434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Far-infrared heater
Assignee: Parker Kako Co Ltd
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Filing: 1989-04-04
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Granted: 1990-10-23
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Expires: 2009-04-04
Abstract
Abstract (1) a composition for forming a far-infrared-emitting layer, the composition comprising (i) a liquid composition which contains a ceramics-forming material and which is capable of forming a ceramics layer by gelation induced by polymerization and (ii) at least one pigment capable of emitting far-infrared radiation; and (2) a far-infrared heater comprising a heat source, and a protective means which has a far-infrared-emitting layer formed thereon by applying thereto the composition as defined above in (1) to cause gelation of the coating layer by polymerization.
Inventors
- 👤 Shoichi Nomura
- 👤 Akira Kitagawa
- 👤 Hidekata Kawanishi
- 👤 Tsuneo Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:41
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; H05B3/40; H05B3/42; H05B3/44; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/229; C03C2217/23; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/113
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A far-infrared heater comprising a heat source and a protective means which has a far-infrared-emitting layer of 3 to 150 μm in thickness formed thereon by applying thereto a coating composition to cause gelation of the coating layer by polymerization, the coating composition comprising (i) a liquid composition which contains a ceramics-forming material and which is capable of forming a ceramics layer by gelation induced by polymerization and (ii) at least one pigment capable of emitting far-infrared radiation.
Claim 2
Dependent Claim
78 words
A far-infrared heater comprising a heat source and a protective means which has a far-infrared-emitting layer of 3 to 150 μm in thickness formed thereon by applying thereto a coating composition to cause gelation of the coating layer by polymerization, the coating composition comprising (i) a liquid composition which contains a ceramics-forming material and which is capable of forming a ceramics layer by gelation induced by polymerization and (ii) at least one pigment capable of emitting far-infrared radiation.
References Cited (Backward Citations)
JPS5723394A
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JPS5410438A
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US4426570A
Cited
US4377618A
Cited
US4419115A
Cited
JPS6096533A
Cited
JPS6086036A
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US4680045A
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JPS61146756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |