Patents by Inventor Takao Yamamoto

Takao Yamamoto 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: 5139573
    Abstract: An ink that includes a liquid medium and a dye represented by the following Formula (I): ##STR1## wherein M represents a cation selected from an alkali metal, ammonium, and an organic ammonium; R.sub.1 and R.sub.2 independently represent a group selected from a hydrogen atom, a methyl group, a methoxy group, an ethoxy group, and an acetylamino group; R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 independently represent a group selected from a hydrogen atom, a hydroxyl group, a sulfonic acid group, a methoxy group, and an ethoxy group; X represents a hydrogen atom, an acetyl group, a benzoyl group, --SO.sub.2 C.sub.6 H.sub.5, --SO.sub.2 C.sub.6 H.sub.4 CH.sub.3, or ##STR2## where R.sub.9 and R.sub.10 independently represent a hydrogen atom, or --C.sub.2 H.sub.4 OH; and the sulfonic acid group is present as a salt of the same cation as that represented by M.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: August 18, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takao Yamamoto, Tsuyoshi Eida, Katsuhiro Shirota, Megumi Saito
  • Patent number: 5135570
    Abstract: An ink comprises a dye and a liquid medium, wherein said dye is a dye represented by the following Formula: ##STR1## wherein R.sub.1 and R.sub.2 each represent hydrogen atom, a methyl group, a methoxy group or --SO.sub.3 M, R.sub.3 and R.sub.4 each represent a methyl group, methoxy group or an acetylamino group; X represents an acetyl group, a benzoyl group, --SO.sub.2 C.sub.6 H.sub.5, --SO.sub.2 C.sub.6 H.sub.4 --CH.sub.3, or --N.sub.3 C.sub.3 (NHR.sub.5)(NHR.sub.6), where R.sub.5 and R.sub.6 each represent a hydrogen atom, or --C.sub.2 H.sub.4 OH; and M represents an alkali metal, an ammonium group, or an organic ammonium group. An ink-jet recording process comprising applying the ink to a recording medium.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: August 4, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Eida, Megumi Saito, Katsuhiro Shirota, Takao Yamamoto
  • Patent number: 5130723
    Abstract: An ink-jet recording method and apparatus using ink including a recording agent and a liquid medium for dissolution or dispersion thereof, the recording agent being a compound represented by the general formula ##STR1## wherein R.sup.1 and R.sup.2 are respectively a radical selected from the group of lower alkyl, lower alkoxy, --NHCOCH.sub.3, --COOM, and --SO.sub.3 M; R.sup.3, R.sup.4, and R.sup.5 are respectively a radical selected from the group of hydrogen, hydroxyl, lower alkyl, lower alkoxy, amino, --SO.sub.3 M, and --COOM; A is ##STR2## R.sup.6 and R.sup.7 are respectively a radical selected from the group of hydrogen, hydroxyl, and lower alkoxy; m is 1 or 2; n is 0 or 1; and M is alkali metal or ammonium.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: July 14, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takao Yamamoto, Tsuyoshi Eida, Mayumi Yamamoto
  • Patent number: 5127946
    Abstract: Provided is an ink containing a recording agent and a liquid medium for dissolution or dispersion thereof, said ink comprising, as the recording agent, a compound represented by the general formula (A) ##STR1## where n is 0 or 1; R.sub.1, R.sub.2, and R.sub.3 are respectively a substituent selected from the group consisting of hydrogen, methyl, methoxy, hydroxy, amino, acetylamino, and sulfonic acid; and M is an alkali metal, ammonium, or an organic ammonium.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: July 7, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsuyoshi Eida, Takao Yamamoto, Mayumi Yamamoto
  • Patent number: 5123960
    Abstract: An ink in which a dye and a liquid carrier medium are present. The ink includes a dye comprising a compound represented by the following general formula (I): ##STR1## wherein Ph is a copper or nickel phthalocyanine residue, M is an alkali metal or ammonium, R.sub.1 and R.sub.2 are each H, --(CH.sub.2 CH.sub.2 O).sub.m --R.sub.3 or --(CH.sub.2 CHOH).sub.m --R.sub.3 in which R.sub.3 is H, CH.sub.3, C.sub.2 H.sub.5 or CH.sub.2 OH and in which m is a number from 0 to 4, a is a number from 0 to 2, X is a lower alkylene or phenylene group, C is a number from 2 to 3, and b is a number from 0 to 2 with the proviso that when b is 0, then Y and Z are respectively Cl, OH or OR.sub.4 is an alkyl group having 1 or 2 carbons or a hydroxyalkyl group, and when b is not 0, then Y is Cl, NR.sub.5 R.sub.6 or OR.sub.7 and Z is NR.sub.5 R.sub.6, OR.sub.7, a substituted or unsubstituted anilino group or a substituted or unsubstituted phenoxy group, wherein R.sub.5 and R.sub.
    Type: Grant
    Filed: September 18, 1990
    Date of Patent: June 23, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhiro Shirota, Tsuyoshi Eida, Takao Yamamoto, Mayumi Yamamoto
  • Patent number: 5110356
    Abstract: The present invention provides an ink comprising a dye and a liquid medium, wherein said dye is a dye of Formula (I): ##STR1## wherein R.sub.1 and R.sub.2 represent independently an alkyl group, an alkoxy group or an acetylamino group; R.sub.3 represents --SO.sub.3 M or a hydrogen atom; R.sub.4 represents a hydrogen atom, --SO.sub.3 M or --NHR.sub.5, where R.sub.5 represents a hydrogen atom, a phenyl group that may have a substituent, or a group of the formula ##STR2## where R.sub.6 and R.sub.7 represent independently a hydrogen atom or --C.sub.2 H.sub.4 OH; M represents an alkali metal, an ammonium group or an organic ammonium group; and 1, m and n represent independently an integer of 0 or 1.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: May 5, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhiro Shirota, Tsuyoshi Eida, Megumi Saito, Takao Yamamoto
  • Patent number: 5102775
    Abstract: A composition for visible light sensitive electrodeposition coating which comprises (A) a photocurable resin having light sensitive groups capable of being crosslinked or polymerized by light irradiation and ionic groups, (B) a sensitizer which is excited by absorption of visible light and has a property to interact with the resin (A), (C) a water-insoluble polymerization initiator, and optionally, (D) at least one specific nitrogen-containing compound; and an image-forming method which comprises (i) coating the surface of a conductor by electrodeposition with the aforesaid composition, (ii) exposing the resulting film by electrodeposition by partially irradiating the film with visible light, and then (iii) contacting the resulting film with a developing solution to remove the unexposed areas.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: April 7, 1992
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Motoko Okuhara, Ichiro Yoshihara, Yasuo Doi, Takao Yamamoto, Kenji Seko, Yutaka Yoshikawa, Naozumi Iwasawa
  • Patent number: 5082496
    Abstract: An ink including a recording agent and a liquid medium for dissolution or dispersion thereof, the recording agent being a compound represented by the general formula ##STR1## wherein R.sup.1 and R.sup.2 are respectively a radical selected from the group of lower alkyl, lower alkoxy, --NHCOCH.sub.3, --COOM, and --SO.sub.3 M; R.sup.3, R.sup.4, and R.sup.5 are respectively a radical selected from the group of hydrogen, hydroxyl, lower alkyl, lower alkoxy, amino, --SO.sub.3 M, and --COOM; A is ##STR2## R.sup.6 and R.sup.7 are respectively a radical selected from the group of hydrogen, hydroxyl, and lower alkoxy; m is 1 or 2; n is 0 or 1; and M is alkali metal or ammonium.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: January 21, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takao Yamamoto, Tsuyoshi Eida, Mayumi Yamamoto
  • Patent number: 5059246
    Abstract: A recording liquid comprising a coloring material and a liquid medium containing water and a water-soluble organic solvent having an ether bond, and a pH value of said recording liquid being from 3 to 9 and a peroxide concentration of the liquid medium being not more than 4 mmol/l in terms of iodine is provided. And also an ink-jet recording process that performs recording by ejecting the recording liquid in the form of droplets from a minute ejection orifice, to a recording medium by the action of heat energy, is provided.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: October 22, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takao Yamamoto, Katsuhiro Shirota
  • Patent number: 5045434
    Abstract: A visible radiation sensitive composition comprising:(A) a photosetting resin containing a photosensitive group capable of crosslinking or polymerizing by photoirradiation,(B) a sensitizer represented by the formula (i): ##STR1## wherein R.sub.1 and R.sub.2 are the same or different lower alkyl, and R.sub.3 is a hydrogen atom, lower alkyl group, alkoxyalkyl group, hydroxyalkoxyalkyl group or alkoxycarbonylalkyl group, and(C) a polymerization initiator.
    Type: Grant
    Filed: December 18, 1990
    Date of Patent: September 3, 1991
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Ichiro Yoshihara, Motoko Okuhara, Takao Yamamoto, Naozumi Iwasawa, Yasuo Doi, Tsukasa Ohyama, Kazuhiko Murayama, Yoriaki Matsuzaki, Susumu Kasamatsu, Keisuke Takuma, Kimitoshi Kato
  • Patent number: 5017227
    Abstract: A recording liquid comprising dyes and a liquid medium, wherein the dyes include a black dye and at least one water-soluble dye of a magenta dye and a yellow dye in combination. The black dye is selected from the group, C.I. Food Black 1, C.I. Acid Black 140 and C.I. Acid Black 187.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: May 21, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Koike, Tsuyoshi Eida, Takao Yamamoto
  • Patent number: 4972595
    Abstract: An inclination sensor is contemplated which includes case means having a cavity formed in the interior thereof, with this cavity having a longitudinal slope which is generally V-shaped in longitudinal profile, downwardly concave, and having a downwardly facing apex. A movable member is movable longitudinally along the slope within said cavity. A detecting means is operable to detect the inclination of a mounting body to which said case means is attached, in response to longitudinal movement of the movable member along the longitudinal generally V-shaped slope. A restricting means is provided by the apex and is operable to impede movement of the movable member out of the apex only until the case means undergoes a predetermined, longitudinal tilting movement.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: November 27, 1990
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Koichi Shimamura, Takao Yamamoto, Tetsuo Yamagata
  • Patent number: 4770913
    Abstract: Improved binders or binding seals are proposed which have a substrate of a flexible material. At one end of the substrate is provided an ordinary adhesive layer and at the other end is provided a peelable adhesive layer covered with an ordinary adhesive layer. The peelable adhesive layer allows the user to stick the end of the binder and peel it whenever desired. The binder may be formed with a hole or holes at one end to secure it to a file, and with a peelable adhesive layer at the other end so that a document can be stuck and peeled on and from it.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: September 13, 1988
    Inventor: Takao Yamamoto
  • Patent number: 4567326
    Abstract: A telephone apparatus having the standard ten digit keys and two special keys, and in the handset the conventional switchhook. By manual operation of the two special keys and the switchhook the apparatus can be operated in any one of a plurality of modes, at least some causing transmission of stored sequences of digits in response to entry of an abbreviated address or in causing redialing. In one mode data signals are produced and transmitted in response to not only the digit keys but also the special keys as well. A controller operates the apparatus and is connected to a dial sender which converts the data signals into a multi-frequency signal which is transmitted by a telephone network to a repeater station.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: January 28, 1986
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Yasuji Sato, Takao Yamamoto, Yoshikazu Sano, Yasunobu Nakayama
  • Patent number: 4553744
    Abstract: Herein disclosed is a damper device which is so constructed that a main sealed chamber is formed between one mounting member and the other mounting member by an elastic rubber member providing connection in between, that an auxiliary sealed chamber is formed at the opposite side of the other mounting member to the main sealed chamber by an elastic cover, that the main sealed chamber and at least a portion of the auxiliary sealed chamber are charged with a liquid, that the main sealed chamber and the auxiliary sealed chamber are partitioned by such a partition as is made movable in the direction jointing the two chambers and as is arranged to have its movable range restricted, and that a slot passage is formed between said partition and a wall surrounding the latter.
    Type: Grant
    Filed: October 27, 1980
    Date of Patent: November 19, 1985
    Assignee: Tokai Rubber Industries Ltd.
    Inventors: Keizo Konishi, Teruo Yonehama, Takao Yamamoto
  • Patent number: 4491304
    Abstract: An engine mount device comprises first and second base plate members; an elastic block securely interposed between the first and second base plate members and formed with a cavity; a partition plate member connected to one of the first and second base plate members and formed with an orifice; a diaphragm member connected to the one of the first and second base plate members and defining an auxiliary chamber between it and the partition plate member, the auxiliary chamber being in communication with the fluid chamber through the partition plate member orifice, at least a part of the fluid and auxiliary chambers being filled with a fluid; and a rigid ring disposed around the intermediate section of the elastic block thereby restricting the expansion of the elastic block; the elastic block and the rigid ring serving as a dynamic damper for damping vibration having predetermined frequencies, thereby rendering unnecessary installing the dynamic damper independent from the engine mount device.
    Type: Grant
    Filed: April 9, 1982
    Date of Patent: January 1, 1985
    Assignee: Nissan Motor Company, Limited
    Inventors: Toshihiko Kakimoto, Keizo Konishi, Teruo Yonehama, Takao Yamamoto
  • Patent number: 4353984
    Abstract: A composition and test piece or dipstick for measuring the glucose concentration in body fluids such as urine, spinal fluid and blood. The composition includes a glucose oxidase, a peroxidase a N,N'-tetramethyldiaminophenylmethane and guaiac.
    Type: Grant
    Filed: September 2, 1980
    Date of Patent: October 12, 1982
    Assignee: Kabushiki Kaisha Kyoto Daiichi Kagaku
    Inventors: Shigeki Yamada, Takao Yamamoto
  • Patent number: 4184054
    Abstract: A key telephone system is provided which comprises: a plurality of key telephones; a key service unit; a plurality of transmission paths each including a first transmission cable for transmitting a voice signal between the key telephone and key service unit, a second transmission cable for transmitting a first control signal from the key telephone to the key service unit, and a third transmission cable for transmitting a second control signal from the key service unit to the key telephone; first, second and third transformers of which the primary windings are connected to the key telephone and the secondary windings to the first, second and third transmission cables; and fourth, fifth and sixth transformers of which the primary windings are coupled with the first, second and third transmission cables, respectively, and the secondary windings to the key service unit.
    Type: Grant
    Filed: March 21, 1978
    Date of Patent: January 15, 1980
    Assignee: Tokyo Shibaura Electric Co., Ltd.
    Inventors: Shin-ichi Shibata, Yasuji Sato, Yoshikazu Sano, Takao Yamamoto