Patent US7682200B2 successfully refreshed from Google Patents.
Patent US4134847A successfully refreshed from Google Patents.
US4134847A
Expired / Lapsed
US
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Method for the production of a color developer and the obtained color developer
Assignee: New Oji Paper Co Ltd
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Filing: 1977-05-27
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Granted: 1979-01-16
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Expires: 1997-05-27
Abstract
Abstract A color developer is obtained by the process which comprises heating a mixture of at least one aromatic carboxylic acid, at least one water-insoluble organic polymer and at least one oxide or carbonate of polyvalent metal to melt at least one of aromatic carboxylic acid and said polymer to form a homogeneous mass. The color developer may be pulverized to form finely divided particles.
Inventors
- 👤 Shin-ichi Oda
- 👤 Tosaku Okamoto
- 👤 Akira Nakanishi
- 👤 Takio Kuroda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:57
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
67 words
A method for the production of a color developer which comprises the steps of preparing a mixture of at least one aromatic carboxylic acid, at least one water-in-soluble organic polymer and at least one oxide or carbonate of polyvalent metal and water and heating said mixture to melt at least one of aromatic carboxylic acid and said polymer and to make said mixture into a homogeneous mass.
Claim 2
Independent Claim
67 words
A method for the production of a color developer which comprises the steps of preparing a mixture of at least one aromatic carboxylic acid, at least one water-in-soluble organic polymer and at least one oxide or carbonate of polyvalent metal and water and heating said mixture to melt at least one of aromatic carboxylic acid and said polymer and to make said mixture into a homogeneous mass.
Claim 3
Dependent Claim
38 words
A method for the production of a color developer as defined in claim 1, wherein said mixture is heated in the presence of more than 4% by weight of water on the total dry basis of said mixture.
Claim 4
Dependent Claim
42 words
A method for the production of a color developer as defined in claim 2, wherein said mixture is heated in the presence of within the range of 5 to 40% by weight of water on the total dry basis of said mixture.
Claim 5
Dependent Claim
33 words
A method for the production of a color developer as defined in claim 1, wherein the water content of said color developer is less than 2.5% by weight on the total dry basis.
Claim 6
Dependent Claim
33 words
A method for the production of a color developer as defined in claim 4, wherein the water content of said color developer is less than 2.0% by weight on the total dry basis.
Claim 7
Dependent Claim
51 words
A method for the production of a color developer as defined in claim 1, wherein said mixture comprises one part by dry weight of said aromatic carboxylic acid, 0.05-5 parts by dry weight of said water-insoluble organic polymer and 0.01-50 parts by dry weight of oxide or carbonate of polyvalent metal.
Claim 8
Dependent Claim
34 words
A method for the production of a color developer as defined in claim 1, wherein said aromatic carboxylic acid has a hydroxyl group on the benzene ring at the ortho-position to the carboxyl group.
Claim 9
Dependent Claim
25 words
A method for the production of a color developer as defined in claim 1, wherein said aromatic carboxylic acid has 17 or more carbon atoms.
Claim 10
Dependent Claim
38 words
A method for the production of a color developer as defined in claim 1, wherein the said water-insoluble organic polymer is at least one selected from the group consisting of polystyrene styrene copolymer, α-methylstyrene polymer and α-methylstyrene copolymer.
Claim 11
Dependent Claim
30 words
A method for the production of a color developer as defined in claim 1, wherein said polyvalent metal is selected from the group consisting of zinc, magnesium, aluminum and calcium.
Claim 12
Independent Claim
73 words
A method for the production of a color developer which comprises heating a mixture of at least one aromatic carboxylic acid, at least one water insoluble organic polymer and at least one oxide or carbonate of polyvalent metal in the presence of water to melt at least one of aromatic carboxylic acid and said polymer and to make said mixture into a homogeneous mass, and pulverizing said mass to form finely divided particles.
Claim 13
Independent Claim
73 words
A method for the production of a color developer which comprises heating a mixture of at least one aromatic carboxylic acid, at least one water insoluble organic polymer and at least one oxide or carbonate of polyvalent metal in the presence of water to melt at least one of aromatic carboxylic acid and said polymer and to make said mixture into a homogeneous mass, and pulverizing said mass to form finely divided particles.
Claim 14
Dependent Claim
38 words
A method for the production of a color developer as defined in claim 11, wherein said mixture is heated in the presence of more than 4% by weight of water on the total dry basis of said mixture.
Claim 15
Dependent Claim
42 words
A method for the production of a color developer as defined in claim 12, wherein said mixture is heated in the presence of within the range of 5 to 40% by weight of water on the total dry basis of said mixture.
Claim 16
Dependent Claim
33 words
A method for the production of a color developer as defined in claim 11, wherein the water content of said color developer is less than 2.5% by weight on the total dry basis.
Claim 17
Dependent Claim
33 words
A method for the production of a color developer as defined in claim 14, wherein the water content of said color developer is less than 2.0% by weight on the total dry basis.
Claim 18
Dependent Claim
51 words
A method for the production of a color developer as defined in claim 11, wherein said mixture comprises one part by dry weight of said aromatic carboxylic acid, 0.05-5 parts by dry weight of said water-insoluble organic polymer and 0.01-50 parts by dry weight of oxide or carbonate of polyvalent metal.
Claim 19
Dependent Claim
34 words
A method for the production of a color developer as defined in claim 11, wherein said aromatic carboxylic acid has a hydroxyl group on the benzene ring at the ortho-position to the carboxyl group.
Claim 20
Dependent Claim
25 words
A method for the production of a color developer as defined in claim 11, wherein said aromatic carboxylic acid has 17 or more carbon atoms.
Claim 21
Dependent Claim
37 words
A method for the production of a color developer as defined in claim 11, wherein said water-insoluble organic polymer is at least one selected from the group consisting of polystyrene, styrene copolymer, α-methylstyrene polymer and α-methylstyrene copolymer.
Claim 22
Dependent Claim
30 words
A method for the production of a color developer as defined in claim 11, wherein said polyvalent metal is selected from the group consisting of zinc, magnesium, aluminum and calcium.
Claim 23
Dependent Claim
64 words
A color developer obtained by the process comprising the steps of preparing a mixture of at least one aromatic carboxylic acid, at least one water-insoluble organic polymer and at least one oxide or carbonate of polyvalent metal and water and heating said mixture to melt at least one of aromatic carboxylic acid and said polymer and to make said mixture into a homogeneous mass.
Claim 24
Dependent Claim
64 words
A color developer obtained by the process comprising the steps of preparing a mixture of at least one aromatic carboxylic acid, at least one water-insoluble organic polymer and at least one oxide or carbonate of polyvalent metal and water and heating said mixture to melt at least one of aromatic carboxylic acid and said polymer and to make said mixture into a homogeneous mass.
Claim 25
Dependent Claim
32 words
A color developer as defined in claim 21, wherein said mixture is heated in the presence of more than 4% by weight of water on the total dry basis of said mixture.
Claim 26
Dependent Claim
36 words
A color developer as defined in claim 22, wherein said mixture is heated in the presence of within the range of 5 to 40% by weight of water on the total dry basis of said mixture.
Claim 27
Dependent Claim
27 words
A color developer as defined in claim 21, wherein the water content of said color developer is less than 2.5% by weight of the total dry basis.
Claim 28
Dependent Claim
27 words
A color developer as defined in claim 24, wherein the water content of said color developer is less than 2.0% by weight on the total dry basis.
Claim 29
Dependent Claim
45 words
A color developer as defined in claim 21, wherein said mixture comprises one part by dry weight of said aromatic carboxylic acid, 0.05-5 parts by dry weight of said water-insoluble organic polymer and 0.01-50 parts by dry weight of oxide or carbonate of polyvalent metal.
Claim 30
Dependent Claim
28 words
A color developer as defined in claim 21, wherein said aromatic carboxylic acid has a hydroxyl group on the benzene ring at the ortho-position to the carboxyl group.
Claim 31
Dependent Claim
19 words
A color developer as defined in claim 21, wherein said aromatic carboxylic acid has 17 or more carbon atoms.
Claim 32
Dependent Claim
32 words
A color developer as defined in claim 21, wherein said water-insoluble organic polymer is at least one selected from the group consisting of polystyrene, styrene copolymer, α-methylstyrene polymer and α methylstyrene copolymer.
Claim 33
Dependent Claim
24 words
A color developer as defined in claim 21, wherein said polyvalent metal is selected from the group consisting of zinc, magnesium, aluminum and calcium.
Claim 34
Dependent Claim
70 words
A color developer obtained by the process comprising of heating a mixture of at least one aromatic carboxylic acid, at least one water-insoluble organic polymer and at least one oxide or carbonate of polyvalent metal in the presence of water to melt at least one of aromatic carboxylic acid and said polymer and to make said mixture into a homogeneous mass and pulverizing said mass to form finely divided particles.
Claim 35
Dependent Claim
70 words
A color developer obtained by the process comprising of heating a mixture of at least one aromatic carboxylic acid, at least one water-insoluble organic polymer and at least one oxide or carbonate of polyvalent metal in the presence of water to melt at least one of aromatic carboxylic acid and said polymer and to make said mixture into a homogeneous mass and pulverizing said mass to form finely divided particles.
Claim 36
Dependent Claim
32 words
A color developer as defined in claim 31, wherein said mixture is heated in the presence of more than 4% by weight of water on the total dry basis of said mixture.
Claim 37
Dependent Claim
36 words
A color developer as defined in claim 32, wherein said mixture is heated in the presence of within the range of 5 to 40% by weight of water on the total dry basis of said mixture.
Claim 38
Dependent Claim
27 words
A color developer as defined in claim 31, wherein the water content of said color developer is less than 2.5% by weight on the total dry basis.
Claim 39
Dependent Claim
27 words
A color developer as defined in claim 34, wherein the water content of said color developer is less than 2.0% by weight on the total dry basis.
Claim 40
Dependent Claim
45 words
A color developer as defined in claim 31, wherein said mixture comprises one part by dry weight of said aromatic carboxylic acid, 0.05-5 parts by dry weight of said water-insoluble organic polymer and 0.01-50 parts by dry weight of oxide or carbonate of polyvalent metal.
Claim 41
Dependent Claim
28 words
A color developer as defined in claim 31, wherein said aromatic carboxylic acid has a hydroxyl group on the benzene ring at the ortho-position to the carboxyl group.
Claim 42
Dependent Claim
19 words
A color developer as defined in claim 31, wherein said aromatic carboxylic acid has 17 or more carbon atoms.
Claim 43
Dependent Claim
31 words
A color developer as defined in claim 31, wherein said water-insoluble organic polymer is at least one selected from the group consisting of polystyrene, styrene copolymer, α-methylstyrene polymer and α-methylstyrene copolymer.
Claim 44
Dependent Claim
24 words
A color developer as defined in claim 31, wherein said polyvalent metal is selected from the group consisting of zinc, magnesium, aluminum and calcium.
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) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |