US4114591A
Expired / Lapsed
US
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Exothermic metallic composition
Assignee: Individual
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Filing: 1977-01-10
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Granted: 1978-09-19
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Expires: 1997-01-10
Abstract
Abstract An exothermic metallic composition for a body warmer comprising (1) one or more members selected from the group comprising iron, aluminum and magnesium in the form of fine particle and (2) an oxidation agent comprising one or more members selected from the group comprising ferrosoferric oxide, plumboblumbic oxide, trimanganese tetroxide, black copper oxide and manganese dioxide in the form of fine particle, water and particulate oxidation assistants such as sodium chloride and active carbon.
Inventors
- 👤 Hiroshi Nakagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:21
CPC Classifications
F; F24; F24V; F24V30/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
163 words
A body warmer comprising: an exothermic composition which comprises a principal metallic member selected from the group consisting of iron, aluminum and magnesium in particulate form; and an oxidation agent in an amount stoichiometrically equal to said principal metallic member comprising water of 20 - 50 parts by weight; sodium chloride of 5 - 10 parts by weight; an oxide member selected from the group consisting of ferrosoferric oxide, trimanganese tetraoxide, manganese dioxide and mixtures thereof in particulate form of 10 - 60 parts by weight; and active carbon in particulate form of 20 - 50 parts by weight; a first container containing said principal metallic member; a second container containing said oxidation agent; and a porous bag means for containing the mixture of the contents of said first container and said second container, said first and second containers being kept separate and apart from each other until it is desired to mix the contents of the same in said porous bag means.
Claim 2
Dependent Claim
163 words
A body warmer comprising: an exothermic composition which comprises a principal metallic member selected from the group consisting of iron, aluminum and magnesium in particulate form; and an oxidation agent in an amount stoichiometrically equal to said principal metallic member comprising water of 20 - 50 parts by weight; sodium chloride of 5 - 10 parts by weight; an oxide member selected from the group consisting of ferrosoferric oxide, trimanganese tetraoxide, manganese dioxide and mixtures thereof in particulate form of 10 - 60 parts by weight; and active carbon in particulate form of 20 - 50 parts by weight; a first container containing said principal metallic member; a second container containing said oxidation agent; and a porous bag means for containing the mixture of the contents of said first container and said second container, said first and second containers being kept separate and apart from each other until it is desired to mix the contents of the same in said porous bag means.
Claim 3
Dependent Claim
50 words
The body warmer as set forth in claim 1, wherein said oxidation agent comprises ferrosoferric oxide of 20 - 50 parts by weight, sodium chloride of 5 - 10 parts by weight, active carbon of 20 - 50 parts by weight and water of 20 - 50 parts by weight.
Claim 4
Dependent Claim
59 words
The body warmer as set forth in claim 1, wherein said oxidation agent comprises ferrosoferric oxide of 10 - 30 parts by weight, manganese dioxide of 10 - 30 parts by weight, sodium chloride of 5 - 10 parts by weight, active carbon of 20 - 50 parts by weight and water of 20 - 50 parts by weight.
Claim 5
Dependent Claim
145 words
A body warmer comprising: an exothermic composition which comprises a principal metallic member selected from the group consisting of iron, aluminum, and magnesium in particulate form; and a stoichiometrically equivalent amount of an oxidation agent comprising water of 20 - 50 parts by weight; an oxide member comprising manganese dioxide of 5 - 30 parts by weight and black copper oxide of 5 - 30 parts by weight; and active carbon in particulate form of 20 - 50 parts by weight; a first container containing said principal metallic member; a second container containing said oxidation agent; and a porous bag means for containing the mixture of the contents of said first container and said second container, said first and second containers being kept separate and apart from each other until it is desired to mix the contents of the same in said porous bag means.
Claim 6
Dependent Claim
145 words
A body warmer comprising: an exothermic composition which comprises a principal metallic member selected from the group consisting of iron, aluminum, and magnesium in particulate form; and a stoichiometrically equivalent amount of an oxidation agent comprising water of 20 - 50 parts by weight; an oxide member comprising manganese dioxide of 5 - 30 parts by weight and black copper oxide of 5 - 30 parts by weight; and active carbon in particulate form of 20 - 50 parts by weight; a first container containing said principal metallic member; a second container containing said oxidation agent; and a porous bag means for containing the mixture of the contents of said first container and said second container, said first and second containers being kept separate and apart from each other until it is desired to mix the contents of the same in said porous bag means.
Claim 7
Dependent Claim
163 words
A body warmer comprising: an exothermic composition which comprises a principal metallic member selected from the group consisting of iron, aluminum, and magnesium in particulate form; and a stoichiometrically equivalent amount of an oxidation agent comprising water of 20 - 50 parts by weight; sodium chloride of 5 - 10 parts by weight; an oxide member comprising ferrosoferric oxide of 5 - 30 parts by weight, manganese dioxide of 5 - 30 parts by weight and black copper oxide of 5 - 30 parts by weight; and active carbon in particulate form of 20 - 50 parts by weight; a first container containing said principal metallic member; a second container containing said oxidation agent; and a porous bag means for containing the mixture of the contents of said first container and said second container, said first and second containers being kept separate and apart from each other until it is desired to mix the contents of the same in said porous bag means.
Claim 8
Dependent Claim
163 words
A body warmer comprising: an exothermic composition which comprises a principal metallic member selected from the group consisting of iron, aluminum, and magnesium in particulate form; and a stoichiometrically equivalent amount of an oxidation agent comprising water of 20 - 50 parts by weight; sodium chloride of 5 - 10 parts by weight; an oxide member comprising ferrosoferric oxide of 5 - 30 parts by weight, manganese dioxide of 5 - 30 parts by weight and black copper oxide of 5 - 30 parts by weight; and active carbon in particulate form of 20 - 50 parts by weight; a first container containing said principal metallic member; a second container containing said oxidation agent; and a porous bag means for containing the mixture of the contents of said first container and said second container, said first and second containers being kept separate and apart from each other until it is desired to mix the contents of the same in said porous bag means.
Claim 9
Dependent Claim
141 words
A body warmer comprising: an exothermic composition which comprises a principal metallic member selected from the group consisting of iron, aluminum, and magnesium in particulate form; and a stoichiometrically equivalent amount of an oxidation agent comprising water of 30 parts by weight; sodium chloride of 10 parts by weight; an oxide member comprising ferrosoferric oxide of 30 parts by weight; graphite of 5 parts by weight; and active carbon in particulate form of 25 parts by weight; a first container containing said principal metallic member; a second container containing said oxidation agent; and a porous bag means for containing the mixture of the contents of said first container and said second container, said first and second containers being kept separate and apart from each other until it is desired to mix the contents of the same in said porous bag means.
Claim 10
Dependent Claim
141 words
A body warmer comprising: an exothermic composition which comprises a principal metallic member selected from the group consisting of iron, aluminum, and magnesium in particulate form; and a stoichiometrically equivalent amount of an oxidation agent comprising water of 30 parts by weight; sodium chloride of 10 parts by weight; an oxide member comprising ferrosoferric oxide of 30 parts by weight; graphite of 5 parts by weight; and active carbon in particulate form of 25 parts by weight; a first container containing said principal metallic member; a second container containing said oxidation agent; and a porous bag means for containing the mixture of the contents of said first container and said second container, said first and second containers being kept separate and apart from each other until it is desired to mix the contents of the same in said porous bag means.
Claim 11
Dependent Claim
58 words
The body warmer as set forth in claim 1, wherein said oxidation agent comprises manganese dioxide of 5 - 30 parts by weight, trimanganese tetraoxide of 5 - 30 parts by weight, sodium chloride of 5 - 10 parts by weight, active carbon of 20 - 50 parts by weight and water of 20 50 parts by weight.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |