Patents by Inventor Wataru Fujimatsu
Wataru Fujimatsu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4537824Abstract: A magnetic recording medium is described comprising a non-magnetic support layer, a magnetic layer and at least one layer of a high-molecular weight boron containing compound of the formula: ##STR1##Type: GrantFiled: March 9, 1984Date of Patent: August 27, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Asano, Wataru Fujimatsu, Kazumasa Matsumoto, Hideki Murata, Toshihiko Sato, Kenji Watanabe
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Patent number: 4490459Abstract: The invention relates to multi-layered color photosensitive materials having a support, a red photosensitive silver halide emulsion layer containing a non-diffusible cyan coupler, a green photosensitive silver halide emulsion layer containing a non-diffusible yellow coupler and a blue photosensitive silver halide emulsion layer containing a non-diffusible magenta coupler coated on a support in the order recited and wherein the green photosensitive emulsion layer contains a compound capable of reacting with an oxidized color developing agent to release a development inhibiting substance.Type: GrantFiled: May 12, 1983Date of Patent: December 25, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toshifumi Iijima, Kaoru Onodera, Wataru Fujimatsu
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Patent number: 4370410Abstract: A silver halide color material comprising red, green and blue photosensitive silver halide emulsion layers, each of which contains a coupler, and in which said green photosensitive layer is composed of at least two layers and between those of which said red photosensitive layer is arranged, and said green photosensitive layer contains an anti-diffusive yellow coupler.Type: GrantFiled: December 23, 1981Date of Patent: January 25, 1983Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toshifumi Iijima, Wataru Fujimatsu, Kaoru Onodera
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Patent number: 4368257Abstract: A method of forming a cyan dye image by development of an exposed silver halide photographic material with a developer containing a cyan coupler having one of the following formulae: ##STR1## wherein R.sub.1 is a hydrogen atom or alkyl having 1 to 20 carbon atoms; R.sub.2 is alkyl, aryl, or a hetero ring; R.sub.3 is hydrogen or halogen; X is arylene or alkylene; Z is a coupling off group; n is 1 or 2; ##STR2## wherein Cy, Cy' and Cy" are individually a cyclic aliphatic, aromatic or heterocyclic group; R, R' and R" are individually alkyl; A is hydrogen or a monovalent organic group, Y is a divalent organic group, K, l, m, m' m" are individually 0 or 1, provided that when m=0, Cy is a cyclic aliphatic or heterocyclic group.Type: GrantFiled: January 14, 1981Date of Patent: January 11, 1983Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Yasushi Usagawa, Wataru Fujimatsu, Osamu Sasaki, Katsumi Matsuura
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Patent number: 4362810Abstract: A method of forming a cyan dye image by development of an exposed silver halide photographic material with a developer containing a 2,5-diacylaminophenol cyan coupler containing a substituted alkylsulfonylamino terminal moiety or a substituted alkylaminosulfonyl terminal moiety in the 2- or 5- position.Type: GrantFiled: January 9, 1981Date of Patent: December 7, 1982Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Yasushi Usagawa, Wataru Fujimatsu, Osamu Sasaki, Katsumi Matsuura
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Patent number: 4314023Abstract: A photographic yellow coupler having a general formula selected from the group consisting of (I), (II) and (III) ##STR1## wherein A is a yellow coupler residue defined by removing one hydrogen atom of a active methylene group from a yellow coupler having the active methylene group; Q is a group having a formula selected from the group consisting of ##STR2## and ##STR3## (where X and Y are individually a hydrogen atom or an alkyl, acyl, aryl or aralkyl group; Z is a hydrogen atom or an alkyl, aryl or aralkyl group; and R.sub.1 and R.sub.2 are individually a hydrogen atom or an alkyl, aryl or aralkyl group or both of R.sub.1 and R.sub.2 together may form a benzylidene group or a cycloalkyl group); and Q' is a group of the formula --CH.sub.2 --CH.sub.2 -- or ##STR4## (wherein R.sub.3 is a hydrogen or halogen atom or an alkoxy group; R.sub.4 is a hydrogen or halogen atom, an amino, acylamino, ureido, lower alkyl, alkoxy or hydroxy group; and R.sub.4 and R.sub.5 are individually a lower alkyl group).Type: GrantFiled: November 24, 1980Date of Patent: February 2, 1982Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Tamotsu Kojima, Hiroyuki Imamura, Mitsuto Fujiwhara, Wataru Fujimatsu, Takaya Endo
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Patent number: 4304845Abstract: The present invention relates to a process for forming a yellow color image which requires contacting exposed silver halide grain with a developer in the presence of a particular yellow coupler.Type: GrantFiled: June 20, 1980Date of Patent: December 8, 1981Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Wataru Fujimatsu, Shui Sato, Tamotsu Kojima, Shigemasa Itoh, Takaya Endo
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Patent number: 4304844Abstract: A method for forming a cyan dye image by developing an exposed silver halide photographic material with a developer containing a color developing agent in the presence of a cyan coupler, wherein the coupler is a 2,5-diacylaminophenol in which each acylamino group has a substituent containing an oxycarbonyl, sulfonyloxy, oxysulfonyl, arylsulfonamide or arylsulfamoyl group or other organic group containing a sulfone group.Type: GrantFiled: May 1, 1980Date of Patent: December 8, 1981Inventors: Wataru Fujimatsu, Yasushi Usagawa, Osamu Sasaki, Katsumi Matsuura
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Patent number: 4299914Abstract: A method for forming a cyan dye image by development of an exposed silver halide photographic material with a developer containing a cyan coupler of the following formula: ##STR1## in which R represents hydrogen atom or an alkyl group having a carbon number of one to twenty; R.sub.1 represents an alkylsulfonamide or alkylsulfamoyl group; R.sub.2 represents an alkyl, aryl group or a 5 or 6-membered heterocyclic group containing a nitrogen, oxygen or sulfur atom; R.sub.3 represents a hydrogen or halogen atom; X represents an alkylene, metaphenylene or orthophenylene group; Z represents a hydrogen atom or a split-off radical; and n has an integral value of one or two.Type: GrantFiled: May 1, 1980Date of Patent: November 10, 1981Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Wataru Fujimatsu, Yasushi Usagawa, Osamu Sasaki, Katsumi Matsuura
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Patent number: 4012258Abstract: Process of forming dye images using color couplers containing a monohydro-polyfluoroalkyl group.Type: GrantFiled: April 14, 1975Date of Patent: March 15, 1977Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Tamotsu Kojima, Shui Sato, Wataru Fujimatsu, Hiroyuki Imamura, Takaya Endo
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Patent number: 4008086Abstract: An improved photographic system in which a new yellow coupler is employed. The yellow coupler has the formula, ##STR1## wherein X is a --N= or --CH= group; Cp is a residue formed by removing one hydrogen atom of the active methylene group of an acetanilide yellow coupler; n is an integer of 1 to 4; and R is a hydrogen or halogen atom, or an alkyl, alkoxy, alkylcarbonyl, aryl, arylcarbonyl, amino, acylamino, carboxyl, nitrile, aralkyl or aralkyloxy group, provided that in case n is 2 or more the R groups may be the same or different, and two adjacent R groups in combination may form a benzene ring.Type: GrantFiled: May 16, 1975Date of Patent: February 15, 1977Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Wataru Fujimatsu, Shui Sato, Tamotsu Kojima, Takaya Endo, Kazumi Minahara