Patents by Inventor Chika Negishi
Chika Negishi 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).
-
Patent number: 7709832Abstract: A fluoranthene compound has 6 fused rings. An organic light-emitting element uses the fluoranthene compound.Type: GrantFiled: April 18, 2007Date of Patent: May 4, 2010Assignee: Canon Kabushiki KaishaInventors: Chika Negishi, Takao Takiguchi, Satoshi Igawa, Jun Kamatani, Naoki Yamada
-
Patent number: 7691491Abstract: Novel monoaminofluorene compounds are provided, and organic light-emitting devices which exhibit good luminescence hue of extremely high purity and have optical output with high luminescence efficiency, high luminance and longer operating life are provided using the compounds.Type: GrantFiled: August 12, 2003Date of Patent: April 6, 2010Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Mizuho Hiraoka, Koichi Suzuki, Akihiro Senoo, Hiroshi Tanabe, Naoki Yamada, Chika Negishi
-
Publication number: 20100033081Abstract: To provide a compound excellent in light emitting properties and an organic light emitting device having the compound.Type: ApplicationFiled: December 15, 2006Publication date: February 11, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Naoki Yamada, Chika Negishi, Keiji Okinaka, Minako Nakasu
-
Publication number: 20100026171Abstract: Provided are a condensed ring aromatic compound for an organic light-emitting device, and an organic light-emitting device having optical output with high efficiency and high luminescence and having durability. An organic light-emitting device including an anode and a cathode, and a layer made of an organic compound interposed between the anode and the cathode, wherein at least one layer of the layers made of the organic compound contains a condensed ring aromatic compound shown in the following general formula [1]: wherein R1 to R16 each independently represent a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, and may be the same or different.Type: ApplicationFiled: March 27, 2008Publication date: February 4, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Chika Negishi, Akihito Saitoh, Hiroki Ohrui, Hironobu Iwawaki, Masanori Muratsubaki
-
Patent number: 7632577Abstract: To provide an organic light-emitting device that exhibits the hue of light emission having extremely high purity and has a light output having high luminance and long life with a high degree of efficiency. The organic light-emitting device comprises at least a pair of electrodes consisting of an anode and a cathode and one or more organic compound-containing layers sandwiched between the pair of electrodes, wherein at least one of the above described organic compound-containing layers contains at least one compound selected from the group consisting of the compounds represented by the following general formula [1] and at least one compound selected from the group consisting of the compounds represented by the following general formula [2].Type: GrantFiled: August 26, 2003Date of Patent: December 15, 2009Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Mizuho Hiraoka, Koichi Suzuki, Akihiro Senoo, Hiroshi Tanabe, Naoki Yamada, Chika Negishi
-
Publication number: 20090278118Abstract: There are provided a novel benzofluoranthene compound and an organic light-emitting device which uses the benzofluoranthene compound, gives a blue emission hue with extremely good purity, and has an optical output with a high efficiency, a high luminance, and a long life. Specifically, there are provided a benzofluoranthene compound represented by the general formula shown below and an organic light-emitting device including a pair of electrodes including an anode and a cathode one of which is a transparent or translucent electrode material, and an organic compound layer disposed between the pair of electrodes and including a material for an organic light-emitting device containing the benzofluoranthene compound. In the general formula (1), one of X1, X2, X3, X4, X5, and X6 represents a substituted or unsubstituted fused heterocyclic group having four or less rings, and the others of X1, X2, X3, X4, X5, and X6 each represent a hydrogen atom.Type: ApplicationFiled: December 12, 2007Publication date: November 12, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Hiroki Ohrui, Akihito Saitoh, Chika Negishi, Hironobu Iwawaki, Masanori Muratsubaki, Hiroyuki Tomono, Tetsuya Kosuge, Akihiro Senoo
-
Publication number: 20090278447Abstract: An organic luminescent device having organic-compound layers is provided which takes on luminous hues with very good purity and has optical power with high efficiency, high luminance and a long life. At least one of the organic-compound layers contains a benzo[k]fluoranthene compound represented by the following general formula (1): wherein R1 is a group selected from the group consisting of alkyl, aralkyl and a heterocyclic group which may be substituted, and R1 's may be the same or different; R10 to R20 are each independently a group selected from the group consisting of hydrogen, halogen, alkyl, aralkyl, phenyl, a condensed bicyclic aromatic group and a heterocyclic group which may be substituted; and a is an integer of 0 or more to 9 or less.Type: ApplicationFiled: July 18, 2007Publication date: November 12, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Akihito Saitoh, Masanori Muratsubaki, Satoshi Igawa, Hiroki Ohrui, Chika Negishi, Masashi Hashimoto, Takao Takiguchi, Akihiro Senoo, Shinjiro Okada
-
Publication number: 20090184630Abstract: There are provided a condensed ring aromatic compound and an organic light-emitting device having an optical output with high efficiency and high luminance, and durability. An organic light-emitting device including: a pair of electrodes comprising an anode and a cathode of which at least one is transparent or translucent; and an organic compound layer disposed between the pair of electrodes, wherein the organic compound layer contains the condensed ring aromatic compound represented by the following formula [1].Type: ApplicationFiled: March 27, 2008Publication date: July 23, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Chika Negishi, Akihito Saitoh, Hiroki Ohrui, Hironobu Iwawaki, Masanori Muratsubaki
-
Publication number: 20090091244Abstract: To realize extremely high luminous efficiency and to provide an organic light-emitting device having a optical output with a long lifetime. Provided is an amine compound represented by the general formula (1).Type: ApplicationFiled: December 13, 2006Publication date: April 9, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Chika Negishi, Naoki Yamada, Keiji Okinaka, Minako Nakasu
-
Patent number: 7510781Abstract: Provided are a novel spiro compound, and an organic luminescence device using the spiro compound and having an optical output with an extremely high efficiency and a high luminance, and an extremely high durability. The Spiro compound is represented by the following general formula [I]: (wherein R1, R2, R3, and R4 represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted amino group, a cyano group, or a halogen atom, and R1, R2, R3, and R4 may be identical or different from each other; and Ar1 and Ar2 represent a substituted or unsubstituted condensed polycyclic aromatic group or a substituted or unsubstituted condensed polycyclic heterocyclic group, which may be identical or different from each other.Type: GrantFiled: August 12, 2003Date of Patent: March 31, 2009Assignee: Canon Kabushiki KaishaInventors: Koichi Suzuki, Mizuho Hiraoki, Akihiro Senoo, Naoki Yamada, Chika Negishi, Akihito Saito
-
Patent number: 7387845Abstract: A novel monoamino compound is provided. Using the monoamino compound, an organic luminescence device is provided, which exhibits a luminescence hue with extremely high purity, and having an optical output of a high luminance with a high efficiency and a long life time.Type: GrantFiled: August 25, 2003Date of Patent: June 17, 2008Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Mizuho Hiraoka, Akihiro Senoo, Hiroshi Tanabe, Naoki Yamada, Chika Negishi
-
Publication number: 20080124573Abstract: The present invention provides an amine compound useful for an organic light-emitting device capable of realizing extremely high luminous efficiency and having a light output with a long lifetime can be formed. The amine compound is represented by the following general formula (1): wherein Ar1 to Ar8 each represent an aryl group or a heterocyclic group, R1 to R6 each represent a hydrogen atom, a halogen atom, an alkyl group, or the like, and X represents a biphenylene group, a fluorenylene group, or the like.Type: ApplicationFiled: November 16, 2007Publication date: May 29, 2008Applicant: CANON KABUSHIKI KAISHAInventor: Chika Negishi
-
Publication number: 20080124577Abstract: A novel organic compound and a high-performance organic light-emitting element containing the same. The organic light-emitting element contains a novel compound having a fluoranthene structure.Type: ApplicationFiled: April 18, 2007Publication date: May 29, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Akihito Saitoh, Keiji Okinaka, Satoshi Igawa, Naoki Yamada, Chika Negishi, Takao Takiguchi, Shinjiro Okada
-
Publication number: 20070252141Abstract: A fluoranthene compound has 6 fused rings. An organic light-emitting element uses the fluoranthene compound.Type: ApplicationFiled: April 18, 2007Publication date: November 1, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Chika Negishi, Takao Takiguchi, Satoshi Igawa, Jun Kamatani, Naoki Yamada
-
Publication number: 20070249878Abstract: A high-performance organic light-emitting element and a novel organic compound realizing the above element are provided. A fluoranthene compound having a specific structure and an organic light-emitting element using the same are provided.Type: ApplicationFiled: April 20, 2007Publication date: October 25, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Hironobu Iwawaki, Chika Negishi, Shinjiro Okada, Takao Takiguchi, Akihiro Senoo, Masashi Hashimoto
-
Publication number: 20070228941Abstract: An amino compound for an organic light-emitting device of general formula [1]: wherein X1 is bonded to the pair of fluorenyl groups at meta-positions to each other and is substituted or unsubstituted aromatic ring, fused polycyclic ring, or heterocyclic ring; Y1 and Y2 are each substituted or unsubstituted alkyl, aryl, or heterocyclic and are the same or different; Z1 to Z4 are each hydrogen, halogen, or substituted or unsubstituted alkyl, aralkyl, alkenyl, alkynyl, alkoxy, aryl, or heterocyclic and are the same or different; R1 to R4 are each hydrogen, halogen, or substituted or unsubstituted alkyl, aryl, or heterocyclic and are the same or different; a and d are each 1 to 4; and b and c are each 1 to 3.Type: ApplicationFiled: March 23, 2007Publication date: October 4, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Shigemoto Abe, Akihiro Senoo, Naoki Yamada, Chika Negishi
-
Patent number: 7241513Abstract: A fluorene compound represented by the following general formula [I]: is used to provide an organic luminescent device. Such a device has an optical output exhibiting a high luminance with an extremely high efficiency, and has an extremely high durability.Type: GrantFiled: August 12, 2003Date of Patent: July 10, 2007Assignee: Canon Kabushiki KaishaInventors: Koichi Suzuki, Mizuho Hiraoka, Akihiro Senoo, Naoki Yamada, Chika Negishi, Akihito Saitoh, Daisaku Tanaka, Ryoji Yashiro
-
Patent number: 7229702Abstract: The present invention provides an oligofluorenylene compound represented by the general formula below, which enables production of an organic light-emitting device that exhibits an extremely pure luminescent hue and has a light emission of high efficiency, high brightness, and long lifetime.Type: GrantFiled: March 25, 2003Date of Patent: June 12, 2007Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Mizuho Hiraoka, Koichi Suzuki, Akihiro Senoo, Hiroshi Tanabe, Naoki Yamada, Chika Negishi, Maki Okajima
-
Publication number: 20060286408Abstract: Provided a novel 1,8-naphthyridine compound represented by the following general formula [I]: wherein R1 to R6 each represent one selected from the group consisting of a hydrogen atom; an alkyl group, an aralkyl group, an aryl group, a heterocyclic group, a condensed polycyclic aromatic group, a condensed polycyclic heterocyclic group and an aryloxy group which may be substituted; a substituted amino group; a halogen atom; a trifluromethyl group; and a cyano group, and may be the same as or different from one another, provided that at least two of R1 to R6 each represent one selected from the group consisting of an aralkyl group, an aryl group, a heterocyclic group, a condensed polycyclic aromatic group, a condensed polycyclic heterocyclic group and an aryloxy group which may be substituted; and a substituted amino group.Type: ApplicationFiled: June 20, 2006Publication date: December 21, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Koichi Suzuki, Hiroshi Tanabe, Chika Negishi, Taiki Watanabe, Akihiro Senoo, Kazunori Ueno
-
Publication number: 20060166034Abstract: Novel monoaminofluorene compounds are provided, and organic light-emitting devices which exhibit good luminescence hue of extremely high purity and have optical output with high luminescence efficiency, high luminance and longer operating life are provided using the compounds.Type: ApplicationFiled: August 12, 2003Publication date: July 27, 2006Applicant: Canon Kabushiki KaishaInventors: Akihito Saitoh, Mizuho Hiraoka, Koichi Suzuki, Akihiro Senoo, Hiroshi Tanabe, Naoki Yamada, Chika Negishi