Patents by Inventor Kazuhiro Tagawa
Kazuhiro Tagawa 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: 7715869Abstract: The semiconductor integrated circuit (RF IC) for a mobile telephone capable of transmitting/receiving the signals of plural bands reduces the DC offsets of the amplifiers located in the following stages of the mixers that demodulate or down-convert the reception signals. The invention scrambles the signal lines to transmit the outputs of the plural mixers that demodulate or down-convert the reception signals of different bands, so as to avoid the adjacent signal lines from making the same combination from the starting ends to the finishing ends.Type: GrantFiled: September 4, 2003Date of Patent: May 11, 2010Assignees: Hitachi, Ltd., Akita Electronics Systems Co., Ltd.Inventors: Satoru Takahashi, Ikuya Ohno, Norio Hayashi, Masachika Ohno, Kazuhiro Tagawa
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Patent number: 7050779Abstract: The thermal interference due to the self heating of transistors constituting a gilbert cell circuit is reduced, thereby largely improving the receiving sensitivity to signals. A mixer circuit composed of a gilbert cell circuit comprises transistors T1 to T6. Each of the transistors T1 to T4 is con figured so that four transistors may be connected in parallel. In a layout on a semiconductor chip, four transistors T1a to T1d and T2a to T2d respectively constituting the transistors T1 and T2 are respectively separated into two pairs, and the respective two pairs are laid out in a crisscross shape so that they are crossed with each other. Similarly, four transistors T3a to T3d and T4a to T4d respectively constituting the transistors T3 and T4 are respectively separated into two pairs, and the respective two pairs are laid out in a crisscross shape so that they are crossed with each other. Thus, the thermal influence applied on the transistors T1 to T4 is uniformed.Type: GrantFiled: March 31, 2003Date of Patent: May 23, 2006Assignees: Hitachi, Ltd., Akita Electronics Systems Co., Ltd.Inventors: Ikuya Ono, Kazuhiro Tagawa, Satoru Takahashi
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Publication number: 20040180643Abstract: The thermal interference due to the self heating of transistors constituting a gilbert cell circuit is reduced, thereby largely improving the receiving sensitivity to signals. A mixer circuit composed of a gilbert cell circuit comprises transistors T1 to T6. Each of the transistors T1 to T4 is configured so that four transistors may be connected in parallel. In a layout on a semiconductor chip, four transistors T1a to T1d and T2a to T2d respectively constituting the transistors T1 and T2 are respectively separated into two pairs, and the respective two pairs are laid out in a crisscross shape so that they are crossed with each other. Similarly, four transistors T3a to T3d and T4a to T4d respectively constituting the transistors T3 and T4 are respectively separated into two pairs, and the respective two pairs are laid out in a crisscross shape so that they are crossed with each other. Thus, the thermal influence applied on the transistors T1 to T4 is uniformed.Type: ApplicationFiled: March 31, 2003Publication date: September 16, 2004Inventors: Ikuya Ono, Kazuhiro Tagawa, Satoru Takahashi
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Publication number: 20040051122Abstract: The semiconductor integrated circuit (RF IC) for a mobile telephone capable of transmitting/receiving the signals of plural bands reduces the DC offsets of the amplifiers located in the following stages of the mixers that demodulate or down-convert the reception signals. The invention scrambles the signal lines to transmit the outputs of the plural mixers that demodulate or down-convert the reception signals of different bands, so as to avoid the adjacent signal lines from making the same combination from the starting ends to the finishing ends.Type: ApplicationFiled: September 4, 2003Publication date: March 18, 2004Inventors: Satoru Takahashi, Ikuya Ohno, Norio Hayashi, Masachika Ohno, Kazuhiro Tagawa
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Patent number: 6394991Abstract: A shorts type absorbent article comprising a liquid-permeable topsheet 2, a liquid-impermeable antileakage sheet and a liquid-retentive absorbent core 4, opposing left and right side edge portions of a stomach-side zone A and opposing left and right side edge portions of a back-side zone B being joined together to thereby form one pair of joined-sections 9, wherein the joined sections 9 include securely joined sections which are joined by being pressed substantially from both a surface on the side of the stomach-side zone A and a surface on the side of the back-side zone B, moderately joined sections which are joined by being pressed substantially from either the surface on the side of the stomach-side zone A or the surface on the side of the back-side zone B and non-joined sections which are not substantially pressed from either the surface on the side of the stomach-side zone A or the surface on the side of the back-side zone B, the joined sections having three or more stages of thickness in section.Type: GrantFiled: July 31, 2000Date of Patent: May 28, 2002Assignee: Kao CorporationInventors: Shinobu Takei, Kazuhiro Tagawa
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Patent number: 6270935Abstract: An exposed film package for preserving one strip of exposed photographic film includes a film sheath, which has plural pockets. Plural film pieces are formed by cutting the one strip of the exposed film, and contained respectively in the pockets in the film sheath. An index photograph is constituted of photographic paper, on which positive images of frames from the one strip of the exposed film are printed. The photographic paper has a size substantially equal to the film pieces. The positive images are formed in reducing a size of the frames, and grouped in association with the film pieces. Groups of the positive images are arranged in consideration of an order of exposure of the frames. The index photograph is contained in one of the pockets in association with the film pieces constituting the one strip.Type: GrantFiled: January 16, 2001Date of Patent: August 7, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Setsuji Tatsumi, Kazuhiro Tagawa, Toru Kurokawa, Katsumi Otake, Masashi Horiguchi, Toru Tsuji
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Patent number: 6270932Abstract: An exposed film package for preserving one strip of exposed photographic film includes a film sheath, which has plural pockets. Plural film pieces are formed by cutting the one strip of the exposed film, and contained respectively in the pockets in the film sheath. An index photograph is constituted of photographic paper, on which positive images of frames from the one strip of the exposed film are printed. The photographic paper has a size substantially equal to the film pieces. The positive images are formed in reducing a size of the frames, and grouped in association with the film pieces. Groups of the positive images are arranged in consideration of an order of exposure of the frames. The index photograph is contained in one of the pockets in association with the film pieces constituting the one strip.Type: GrantFiled: January 16, 2001Date of Patent: August 7, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Setsuji Tatsumi, Kazuhiro Tagawa, Toru Kurokawa, Katsumi Otake, Masashi Horiguchi, Toru Tsuji
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Publication number: 20010001695Abstract: An exposed film package for preserving one strip of exposed photographic film includes a film sheath, which has plural pockets. Plural film pieces are formed by cutting the one strip of the exposed film, and contained respectively in the pockets in the film sheath. An index photograph is constituted of photographic paper, on which positive images of frames from the one strip of the exposed film are printed. The photographic paper has a size substantially equal to the film pieces. The positive images are formed in reducing a size of the frames, and grouped in association with the film pieces. Groups of the positive images are arranged in consideration of an order of exposure of the frames. The index photograph is contained in one of the pockets in association with the film pieces constituting the one strip.Type: ApplicationFiled: January 16, 2001Publication date: May 24, 2001Inventors: Setsuji Tatsumi, Kazuhiro Tagawa, Toru Kurokawa, Katsumi Otake, Masashi Horiguchi, Toru Tsuji
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Publication number: 20010001289Abstract: An exposed film package for preserving one strip of exposed photographic film includes a film sheath, which has plural pockets. Plural film pieces are formed by cutting the one strip of the exposed film, and contained respectively in the pockets in the film sheath. An index photograph is constituted of photographic paper, on which positive images of frames from the one strip of the exposed film are printed. The photographic paper has a size substantially equal to the film pieces. The positive images are formed in reducing a size of the frames, and grouped in association with the film pieces. Groups of the positive images are arranged in consideration of an order of exposure of the frames. The index photograph is contained in one of the pockets in association with the film pieces constituting the one strip.Type: ApplicationFiled: January 16, 2001Publication date: May 17, 2001Inventors: Setsuji Tatsumi, Kazuhiro Tagawa, Toru Kurokawa, Katsumi Otake, Masashi Horiguchi, Toru Tsuji
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Patent number: 5836931Abstract: A shorts type disposable diaper includes an absorptive body having a liquid permeable topsheet, a liquid impermeable backsheet, and an absorber interposed between the topsheet and the backsheet. The absorptive body is divided into a stomach side portion, an under-crotch portion, and a back side portion, substantially continuous elastically expansible members being disposed over entire peripheral edge portions of a waist opening and a pair of leg openings which are formed by fixedly connecting confronting opposite side portions between the stomach side portion and the back side portion. The absorber is 8 mm or less in thickness and 100 mm or more in width in the under-crotch portion, and the distance from a side edge of the under-crotch portion of the absorber to the elastically expansible members disposed in the leg opening is 15 mm or more.Type: GrantFiled: September 10, 1996Date of Patent: November 17, 1998Assignee: Kao CorporationInventors: Harumitsu Toyoda, Kazuhiro Tagawa, Yoshinobu Machida, Kenji Ando, Haruko Kawaguchi