Patents by Inventor Kimiaki Kinoshita

Kimiaki Kinoshita 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).

  • Fluoran compound and coloring recording material using it
    Patent number: 5017710
    Abstract: Fluoran compounds represented by the general formula (I) ##STR1## (where R is an alkyl group having 9 to 12 carbon atoms) and coloring recording materials containing the said compounds as coloring components, and benzoic acid derivatives represented by the general formula (II) ##STR2## (where R is an alkyl group having 9 to 12 carbon atoms).
    Type: Grant
    Filed: October 24, 1989
    Date of Patent: May 21, 1991
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Tetsuo Igaki, Akio Kaneko, Sumio Manaka, Kimiaki Kinoshita
  • Addition compound of fluoran compounds and ketone
    Patent number: 4695640
    Abstract: Addition compound of fluoran compound and ketone useful as color former for heat or pressure-sensitive color-developable recording material.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: September 22, 1987
    Assignee: Shin Nisso Kako Co., Ltd.
    Inventors: Masakichi Yahagi, Tetsuo Igaki, Shinji Yoshinaka, Kimiaki Kinoshita, Morikuni Saito, Toshiyuki Yamashita, Morio Nanbu
  • Fluoran compounds
    Patent number: 4687862
    Abstract: The fluoran compounds of the formula (I) are new red color forming chromogenic dyes. ##STR1## wherein R represents an isobutyl or isopentyl group, R.sub.1 represents a hydrogen or halogen atom or an alkyl group, R.sub.2 represents a hydrogen or halogen atom or an alkyl group, R.sub.3 represents a hydrogen atom, and R.sub.4 represents a hydrogen atom, or R.sub.4 and R.sub.1 as well as R.sub.2 and R.sub.3 taken together with the carbon atoms to which they are attached may form a benzene ring which may be substituted with a halogen atom. They are used, together with an acidic developer, in chromogenic recording materials for use in pressure sensitive copying paper, heat-sensitive recording paper and thermo-sensitive, reversible color changing composition.
    Type: Grant
    Filed: October 14, 1986
    Date of Patent: August 18, 1987
    Assignee: Shin Nisso Kako Co., Ltd.
    Inventors: Takeo Obitsu, Tetsuo Igaki, Kimiaki Kinoshita, Morio Nanbu, Shinichi Satoh
  • Chromogenic materials employing fluoran compounds
    Patent number: 4680598
    Abstract: The fluoran compounds of the formula (I) are new red color forming chromogenic dyes. ##STR1## wherein R represents an isobutyl or isopentyl group, R.sub.1 represents a hydrogen or halogen atom or an alkyl group, R.sub.2 represents a hydrogen or halogen atom or an alkyl group, R.sub.3 represents a hydrogen atom, and R.sub.4 represents a hydrogen atom, or R.sub.4 and R.sub.1 as well as R.sub.2 and R.sub.3 taken together with the carbon atoms to which they are attached may form a benzene ring which may be substituted with a halogen atom. They are used, together with an acidic developer, in chromogenic recording materials for use in pressure sensitive copying paper, heat-sensitive recording paper and thermo-sensitive, reversible color changing composition.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: July 14, 1987
    Assignee: Shin Nisso Kako Co., Ltd.
    Inventors: Takeo Obitsu, Tetsuo Igaki, Kimiaki Kinoshita, Morio Nanbu, Shinichi Satoh
  • Fluoran compound and color forming record materials using the same
    Patent number: 4668967
    Abstract: 3-N-isobutyl-ethylamino-7-phenylaminofluoran is a new green color former. It is used, together with an acidic substance, in color forming record materials for use in pressure sensitive copying paper, heat-sensitive recording paper and the like.
    Type: Grant
    Filed: May 28, 1986
    Date of Patent: May 26, 1987
    Assignee: Shin Nisso Kako Co., Ltd.
    Inventors: Masakichi Yahagi, Takeo Obitsu, Tetsuo Igaki, Kazuyuki Horisawa, Morio Nanbu, Kimiaki Kinoshita, Sumio Manaka
  • 3-N-isobutylethylamino-6-methyl-7-phenylaminofluoran
    Patent number: 4665199
    Abstract: 3-N-isobutylethylamino-6-methyl-7-phenylamino fluoran of formula (I) ##STR1## is described.
    Type: Grant
    Filed: December 23, 1985
    Date of Patent: May 12, 1987
    Assignee: Shin Nisso Kako Co., Ltd.
    Inventors: Masakichi Yahagi, Tetsuo Igaki, Sinzi Yoshinaka, Kousaku Morita, Morikuni Saito, Kimiaki Kinoshita
  • Chromogenic recording materials
    Patent number: 4642357
    Abstract: A compound of the formula (I) ##STR1## wherein R is methyl or ethyl, useful in chromogenic recording materials, is described.
    Type: Grant
    Filed: May 20, 1986
    Date of Patent: February 10, 1987
    Assignee: Shin Nisso Kako Cp., Ltd.
    Inventors: Masakichi Yahagi, Tetsuo Igaki, Sinzi Yosinaka, Kousaku Morita, Morikuni Saito, Kimiaki Kinoshita
  • 4-hydroxy-4'-isopropoxydiphenylsulfone and its use for color-developable recording material
    Patent number: 4616239
    Abstract: 4-Hydroxy-4'-isopropoxydiphenylsulfone useful as color developer for heat-sensitive color-developable recording material.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: October 7, 1986
    Assignee: Shin Nisso Kako Co., Ltd.
    Inventors: Masakichi Yahagi, Tetsuo Igaki, Shinji Yoshinaka, Kosaku Morita, Kimiaki Kinoshita, Masashi Enokiya, Akio Kaneko, Toshiyuki Yamashita
  • Chromogenic recording materials
    Patent number: 4613879
    Abstract: This invention relates to chromogenic recording materials comprising as a chromogenic substance 3-N-isobutylethylamino-6-methyl-7-phenylaminofluoran of the following formula (I) ##STR1##
    Type: Grant
    Filed: April 18, 1984
    Date of Patent: September 23, 1986
    Assignee: Shin Nisso Kako Co., Ltd.
    Inventors: Masakichi Yahagi, Tetsuo Igaki, Sinzi Yoshinaka, Kousaku Morita, Morikuni Saito, Kimiaki Kinoshita
  • Chromogenic recording materials
    Patent number: 4590498
    Abstract: Chromogenic recording materials which utilizes a fluoran compound of the formula ##STR1## wherein R is methyl or ethyl, is described.
    Type: Grant
    Filed: February 23, 1984
    Date of Patent: May 20, 1986
    Assignee: Shin Nisso Kako Co., Ltd.
    Inventors: Masakichi Yahagi, Tetsuo Igaki, Sinzi Yosinaka, Kousaku Morita, Morikuni Saito, Kimiaki Kinoshita
  • 4-Hydroxy-4'-isopropoxydiphenylsulfone and its use for color-developable recording material
    Patent number: 4568766
    Abstract: 4-Hydroxy-4'-isopropoxydiphenylsulfone useful as color developer for heat-sensitive color-developable recording material.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: February 4, 1986
    Assignee: Nippon Soda Company Limited
    Inventors: Masakichi Yahagi, Tetsuo Igaki, Shinji Yoshinaka, Kosaku Morita, Kimiaki Kinoshita, Masashi Enokiya, Akio Kaneko, Toshiyuki Yamashita
  • Heat-sensitive color-developing composition
    Patent number: 4503446
    Abstract: Dibenzyl terephthalate and isophthalate are known compounds. The present invention is concerned with the new use of such known compounds. In a color-developing system which comprises the combination of a color-developing dye and an organic acidic substance, a higher fatty acid amide has been used as a sensitizer for such system. Unexpectedly, we have found that dibenzyl terephthalate or isophthalate is specifically useful as a sensitizer in said system.
    Type: Grant
    Filed: December 3, 1982
    Date of Patent: March 5, 1985
    Assignee: Shin Nisso Kako Co., Ltd.
    Inventors: Masakichi Yahagi, Kimiaki Kinoshita, Masashi Enokiya