US4886972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Far infrared ray emitting body of a core material coated with an ultrafine powder
Assignee: O K Trading Co Ltd
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Filing: 1989-01-12
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Granted: 1989-12-12
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Expires: 2009-01-12
Abstract
Abstract A far infrared ray emitting body is disclosed. The body comprises a core material having an ultrafine powder of one or more compounds selected from alumina hydrate, silica hydrate, alumina, silica, and silicate adhered on said core material. This material as itself or combined with other substances can provide far infrared radiation to various objects to effect excitation vibration of water molecules in the objects.
Inventors
- 👤 Hirotaka Nakai
- 👤 Setsuji Edagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:40
CPC Classifications
C; C09; C09K; C09K9/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
53 words
A far infrared ray emitting body, comprising: a core material having adhered thereto an ultrafine powder of a particle size below 500 Å of one or more compounds selected from the group consisting of alumina hydrate, silica hydrate, and mixtures thereof which is chemically produced in an aqueous dispersion of said core material.
Claim 2
Dependent Claim
53 words
A far infrared ray emitting body, comprising: a core material having adhered thereto an ultrafine powder of a particle size below 500 Å of one or more compounds selected from the group consisting of alumina hydrate, silica hydrate, and mixtures thereof which is chemically produced in an aqueous dispersion of said core material.
Claim 3
Dependent Claim
35 words
The far infrared ray emitting body according to claim 1, wherein said core material is a material selected from the group consisting of naturally occurring clay minerals, synthetic inorganic compounds, synthetic pigments, and organic materials.
Claim 4
Dependent Claim
23 words
The far infrared ray emitting body according to claim 1, wherein said ultrafine powder has a particle size of 200 Å or below.
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) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |