Patents by Inventor Masato Tanabe

Masato Tanabe 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: 8059986
    Abstract: In a state where a gear is resting on a side cover, the gear and a shaft of a developing roller are made to engage with each other.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: November 15, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Tanabe, Kazunari Murayama, Hideki Maeshima
  • Publication number: 20110206412
    Abstract: A process cartridge detachably is mountable to a main assembly of the apparatus of an image forming apparatus including an urging member and a positioning portion. The cartridge includes a photosensitive drum; a positionable portion positioning the cartridge by engaging the positioning portion when the cartridge is mounted to the apparatus; first and second urgable portions being urged respectively, by first and second urging portions of the urging member to urge the positionable portion to the positioning portion during cartridge mounting; and an electrical contact, provided between the first and second urgable portions with respect to a horizontal direction crossing an axis of the drum, for connecting electrically to an electrical contact portion in the urging member, when the cartridge is mounted to the apparatus.
    Type: Application
    Filed: April 27, 2011
    Publication date: August 25, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masato Tanabe, Susumu Nittani, Shinjiro Toba, Tomio Noguchi
  • Patent number: 7953340
    Abstract: A process cartridge detachably is mountable to a main assembly of the apparatus of an image forming apparatus including an urging member and a positioning portion. The cartridge includes a photosensitive drum; a positionable portion positioning the cartridge by engaging the positioning portion when the cartridge is mounted to the apparatus; first and second urgable portions being urged respectively, by first and second urging portions of the urging member to urge the positionable portion to the positioning portion during cartridge mounting; and an electrical contact, provided between the first and second urgable portions with respect to a horizontal direction crossing an axis of the drum, for connecting electrically to an electrical contact portion in the urging member, when the cartridge is mounted to the apparatus.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: May 31, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Tanabe, Susumu Nittani, Shinjiro Toba, Tomio Noguchi
  • Patent number: 7894733
    Abstract: A process cartridge detachably is mountable to a main assembly of the apparatus of an image forming apparatus including an urging member and a positioning portion. The cartridge includes a photosensitive drum; a positionable portion positioning the cartridge by engaging the positioning portion when the cartridge is mounted to the apparatus; first and second urgable portions being urged respectively, by first and second urging portions of the urging member to urge the positionable portion to the positioning portion during cartridge mounting; and an electrical contact, provided between the first and second urgable portions with respect to a horizontal direction crossing an axis of the drum, for connecting electrically to an electrical contact portion in the urging member, when the cartridge is mounted to the apparatus.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: February 22, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Tanabe, Susumu Nittani, Shinjiro Toba, Tomio Noguchi
  • Patent number: 7813671
    Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a drum unit having an electrophotographic photosensitive drum; and a developing unit rotatably connected with the drum unit at a center of rotation. The developing unit includes a developing roller for developing an electrostatic latent image formed on the electrophotographic photosensitive drum with a developer, a developer accommodating portion accommodating the developer, and a supply opening, extending in an axial direction of the developing roller, for supplying the developer to the developing roller from the developer accommodating portion. The rotation axis is within a width of the sealing member as seen in a direction perpendicular to a surface of the sealing member.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: October 12, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Susumu Nittani, Hideki Maeshima, Masato Tanabe, Isao Koishi
  • Patent number: 7772218
    Abstract: Syntheses of steroids such as 3-hydroxy-7?-methyl-21-[2?-methoxy-4?-(diethylaminomethyl)-phenoxy]-19-norpregna-1,3,5(10)triene citrate (“SR 16234”) and analogs thereof are provided, wherein 21-hydroxy-19-norpregna-4-en-3-one serves as a starting material or intermediate. The latter compound may be readily prepared from estrone-3-methyl ether. Certain intermediates in these syntheses also have value as therapeutic agents, for example in the treatment of prostate disorders such as prostatic cancer.
    Type: Grant
    Filed: August 9, 2004
    Date of Patent: August 10, 2010
    Assignee: SRI International
    Inventors: Richard H. Peters, Jyanwei Liu, John G. Johansson, Kenneth J. Ryan, Wan-Ru Chao, Masato Tanabe
  • Publication number: 20100158563
    Abstract: A process cartridge detachably is mountable to a main assembly of the apparatus of an image forming apparatus including an urging member and a positioning portion. The cartridge includes a photosensitive drum; a positionable portion positioning the cartridge by engaging the positioning portion when the cartridge is mounted to the apparatus; first and second urgable portions being urged respectively, by first and second urging portions of the urging member to urge the positionable portion to the positioning portion during cartridge mounting; and an electrical contact, provided between the first and second urgable portions with respect to a horizontal direction crossing an axis of the drum, for connecting electrically to an electrical contact portion in the urging member, when the cartridge is mounted to the apparatus.
    Type: Application
    Filed: February 18, 2010
    Publication date: June 24, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masato Tanabe, Susumu Nittani, Shinjiro Toba, Tomio Noguchi
  • Publication number: 20100142996
    Abstract: A process cartridge detachably is mountable to a main assembly of the apparatus of an image forming apparatus including an urging member and a positioning portion. The cartridge includes a photosensitive drum; a positionable portion positioning the cartridge by engaging the positioning portion when the cartridge is mounted to the apparatus; first and second urgable portions being urged respectively, by first and second urging portions of the urging member to urge the positionable portion to the positioning portion during cartridge mounting; and an electrical contact, provided between the first and second urgable portions with respect to a horizontal direction crossing an axis of the drum, for connecting electrically to an electrical contact portion in the urging member, when the cartridge is mounted to the apparatus.
    Type: Application
    Filed: February 18, 2010
    Publication date: June 10, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masato Tanabe, Susumu Nittani, Shinjiro Toba, Tomio Noguchi
  • Patent number: 7715746
    Abstract: A process cartridge detachably is mountable to a main assembly of the apparatus of an image forming apparatus including an urging member and a positioning portion. The cartridge includes a photosensitive drum; a positionable portion positioning the cartridge by engaging the positioning portion when the cartridge is mounted to the apparatus; first and second urgable portions being urged respectively, by first and second urging portions of the urging member to urge the positionable portion to the positioning portion during cartridge mounting; and an electrical contact, provided between the first and second urgable portions with respect to a horizontal direction crossing an axis of the drum, for connecting electrically to an electrical contact portion in the urging member, when the cartridge is mounted to the apparatus.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: May 11, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Tanabe, Susumu Nittani, Shinjiro Toba, Tomio Noguchi
  • Publication number: 20090245857
    Abstract: In a state where a gear is resting on a side cover, the gear and a shaft of a developing roller are made to engage with each other.
    Type: Application
    Filed: March 27, 2009
    Publication date: October 1, 2009
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masato Tanabe, Kazunari Murayama, Hideki Maeshima
  • Publication number: 20080253803
    Abstract: A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, includes a drum unit having an electrophotographic photosensitive drum; and a developing unit rotatably connected with the drum unit at a center of rotation, the developing unit including a developing roller for developing an electrostatic latent image formed on the electrophotographic photosensitive drum with a developer, a developer accommodating portion accommodating the developer, a supply opening, extending in an axial direction of the developing roller, for supplying the developer to the developing roller from the developer accommodating portion; wherein the rotation axis is within a width of the sealing member as seen in a direction perpendicular to a surface of the sealing member.
    Type: Application
    Filed: April 8, 2008
    Publication date: October 16, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Susumu Nittani, Hideki Maeshima, Masato Tanabe, Isao Koishi
  • Publication number: 20080159774
    Abstract: A process cartridge detachably mountable to a main assembly of the apparatus of an image forming apparatus, the image forming apparatus including a main assembly urging member and a main assembly positioning portion, the cartridge includes a photosensitive drum; a portion-to-be-positioned for positioning the cartridge by engaging with the main assembly positioning portion when the cartridge is mounted to the main assembly of the apparatus; a first portion-to-be-urged for being urged to a first urging portion of the main assembly urging member to urge the portion-to-be-positioned to the main assembly positioning portion when the cartridge is mounted to the main assembly of the apparatus; a second portion-to-be-urged for being urged to a second urging portion of the main assembly urging member to urge the portion-to-be-positioned to the main assembly positioning portion when the cartridge is mounted to the main assembly of the apparatus; a cartridge electrical contact, provided between the first portion-to-be-u
    Type: Application
    Filed: January 22, 2007
    Publication date: July 3, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Masato Tanabe, Susumu Nittani, Shinjiro Toba, Tomio Noguchi
  • Publication number: 20060264413
    Abstract: A method is provided for treating a patient with a medical condition that involves angiogenesis or HIF-1 overexpression with a compound having the structure of formula (I) wherein Z, x, y, and R1 through R11 are as defined herein.
    Type: Application
    Filed: April 17, 2006
    Publication date: November 23, 2006
    Applicant: SRI International
    Inventors: Keith Laderoute, Joy Calaoagan, Wan-Ru Chao, Richard Peters, Peter Hobbs, Masato Tanabe, Khalid Amin
  • Publication number: 20050009801
    Abstract: Syntheses of steroids such as 3-hydroxy-7?-methyl-21-[2?-methoxy-4?-(diethylaminomethyl)-phenoxy]-19-norpregna-1,3,5(10)triene citrate (“SR 16234”) and analogs thereof are provided, wherein 21-hydroxy-19-norpregna-4-en-3-one serves as a starting material or intermediate. The latter compound may be readily prepared from estrone-3-methyl ether. Certain intermediates in these syntheses also have value as therapeutic agents, for example in the treatment of prostate disorders such as prostatic cancer.
    Type: Application
    Filed: August 9, 2004
    Publication date: January 13, 2005
    Inventors: Richard Peters, Jyanwei Liu, John Johansson, Kenneth Ryan, Wan-Ru Chao, Masato Tanabe
  • Patent number: 6784170
    Abstract: Syntheses of steroids such as 3-hydroxy-7&agr;-methyl-21-[2′-methoxy-4′-(diethylaminomethyl)-phenoxy]-19-norpregna-1,3,5(10)triene citrate (“SR 16234”) and analogs thereof are provided, wherein 21-hydroxy-19-norpregna-4-en-3-one serves as a starting material or intermediate. The latter compound may be readily prepared from estrone-3-methyl ether. Certain intermediates in these syntheses also have value as therapeutic agents, for example in the treatment of prostate disorders such as prostatic cancer.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: August 31, 2004
    Assignee: SRI International
    Inventors: Richard H. Peters, Jyanwei Liu, John G. Johansson, Kenneth J. Ryan, Wan-Ru Chao, Masato Tanabe
  • Patent number: 6747018
    Abstract: Novel anti-estrogenic compounds are provided which are useful to treat a variety of disorders, particularly estrogen-dependent disorders. Preferred compounds have a 1,3,5-estratriene nucleus, and are substituted at the C-17 or C-11 position with a molecular moiety which renders the compounds effective to competitively block the binding of estrogen to its receptor. Particularly preferred compounds are 17-desoxy-1,3,5-estratrienes. Therapeutic methods and pharmaceutical compositions are provided as well.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: June 8, 2004
    Assignee: SRI International
    Inventors: Masato Tanabe, Richard H. Peters, Wan-Ru Chao, Ling Jong
  • Publication number: 20030153543
    Abstract: Novel anti-estrogenic compounds are provided which are useful to treat a variety of disorders, particularly estrogen-dependent disorders. Preferred compounds have a 1,3,5-estratriene nucleus, and are substituted at the C-17 or C-11 position with a molecular moiety which renders the compounds effective to competitively block the binding of estrogen to its receptor. Particularly preferred compounds are 17-desoxy-1,3,5-estratrienes. Therapeutic methods and pharmaceutical compositions are provided as well.
    Type: Application
    Filed: December 19, 2002
    Publication date: August 14, 2003
    Inventors: Masato Tanabe, Richard H. Peters, Wan-Ru Chao, Ling Jong
  • Patent number: 6548491
    Abstract: Novel anti-estrogenic compounds are provided which are useful to treat a variety of disorders, particularly estrogen-dependent disorders. Preferred compounds have a 1,3,5(10)-estratriene nucleus, and are substituted at the C-17 or C-11 position with a molecular moiety which renders the compounds effective to competitively block the binding of estrogen to its receptor. Particularly preferred compounds are 17-desoxy-1,3,5(10)-estratrienes. Therapeutic methods and pharmaceutical compositions are provided as well.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: April 15, 2003
    Assignee: SRI International
    Inventors: Masato Tanabe, Richard H. Peters, Wan-Ru Chao, Ling Jong
  • Patent number: 6503896
    Abstract: Novel anti-estrogenic compounds are provided which are useful to treat a variety of disorders, particularly estrogen-dependent disorders. Preferred compounds have a 1,3,5-estratriene nucleus, and are substituted at the C-17 or C-11 position with a molecular moiety which renders the compounds effective to competitively block the binding of estrogen to its receptor. Particularly preferred compounds are 17-desoxy-1,3,5-estratrienes. Therapeutic methods and pharmaceutical compositions are provided as well.
    Type: Grant
    Filed: May 31, 2001
    Date of Patent: January 7, 2003
    Assignee: SRI International
    Inventors: Masato Tanabe, Richard H. Peters, Wan-Ru Chao, Ling Jong
  • Patent number: D587304
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: February 24, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunari Murayama, Hideki Maeshima, Masato Tanabe, Isao Koishi