Patents by Inventor Hidetoshi Hamamoto

Hidetoshi Hamamoto 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).

  • Publication number: 20100029704
    Abstract: The invention provides a salt, particularly an ionic liquid, of a non-steroidal anti-inflammatory drug (NSAID) comprising a carboxylic acid and an organic amine compound, as well as a method of producing such a salt.
    Type: Application
    Filed: January 29, 2008
    Publication date: February 4, 2010
    Applicant: MEDRX CO., LTD.
    Inventors: Noritaka Hanma, Yasushi Miwa, Hidetoshi Hamamoto
  • Patent number: 7655687
    Abstract: An objective of the present invention is to provide an anti-inflammatory analgesic for external use comprising etodolac as NSAID. The anti-inflammatory analgesic for external use is excellent not only in skin permeability but also in penetratability and diffusivity into tissues present in portions deeper than the skin, can act directly on the muscles or joint tissues with inflammation or pain, and is a little irritant to the skin. The anti-inflammatory analgesic for external use of the present invention is characterized by comprising etodolac and a local anesthetic.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: February 2, 2010
    Assignee: Medrx Co., Ltd.
    Inventors: Hidetoshi Hamamoto, Masaki Ishibashi, Sueko Matsumura, Keiko Yamasaki
  • Publication number: 20100004608
    Abstract: The invention provides a method of producing a microneedle. A jig is heated to a temperature above the level at which a temperature-sensitive material that exhibits thermoplastic deformation becomes viscoplastic, the jig is brought into contact with the temperature-sensitive material, and then the jig is pulled part from the temperature-sensitive material to elongate the portion of the temperature-sensitive material in contact with the jig, whereby acicular projections are formed.
    Type: Application
    Filed: January 29, 2008
    Publication date: January 7, 2010
    Applicant: MEDRX CO., LTD.
    Inventors: Hidetoshi Hamamoto, Masaki Ishibashi, Katsunori Kobayashi
  • Publication number: 20090264664
    Abstract: Mast cell degranulation inhibitors having a carboxyl group have not been developed as external preparations due to the low transdermal permeability thereof. By formulating external preparations thereof, side effects on the internal organs by oral administration can be avoided. Some of the mast cell degranulation inhibitors show drastically inferior photostability, which is also one cause of suppressed development of the drug as an external preparation. The present invention aims at improving the transdermal permeability and photostability of mast cell degranulation inhibitors by forming a salt of the mast cell degranulation inhibitor with an organic amine. Consequently, an external preparation of a mast cell degranulation inhibitor can be provided and the photostability of the mast cell degranulation inhibitor itself, and a preparation containing same can be improved.
    Type: Application
    Filed: October 20, 2006
    Publication date: October 22, 2009
    Applicant: MEDRX CO., LTD.
    Inventors: Mitsuru Endo, Hidetoshi Hamamoto, Keiko Yamasaki, Sueko Matsumura
  • Patent number: 7592371
    Abstract: It is an object of the present invention to provide an external preparation having enhanced transdermal penetration of a mast cell degranulation inhibitor. It is also an object of the present invention to provide a method for improving the photostability of a preparation containing a mast cell degranulation inhibitor. The present invention provides an external preparation containing a mast cell degranulation inhibitor and a topical anesthetic. Further, the method for enhancing the photostability of a preparation containing a mast cell degranulation inhibitor according to the present invention includes adding a topical anesthetic thereto.
    Type: Grant
    Filed: August 1, 2005
    Date of Patent: September 22, 2009
    Assignee: Medrx Co., Ltd.
    Inventors: Mitsuru Endo, Keiko Yamasaki, Hidetoshi Hamamoto, Sueko Matsumura, Masaki Ishibashi
  • Publication number: 20080161364
    Abstract: An object of the present invention is to provide a composition having both of enteric property and dosing property that a conventional composition has not had. The present invention, which can achieve the above object, relates to an enteric medicinal composition, comprising a drug ingredient, pectin, alginic acid or derivative thereof, and water. According to the present invention, it becomes easier to take an enteric composition which has been conventionally difficult to be swallowed.
    Type: Application
    Filed: November 4, 2005
    Publication date: July 3, 2008
    Inventors: Noboru Tatsumi, Hidetoshi Hamamoto, Masaki Ishibashi, Kanako Shiota, Sueko Matsumura, Keiko Yamasaki
  • Publication number: 20080108700
    Abstract: It is an object of the present invention to provide an external preparation having enhanced transdermal penetration of a mast cell degranulation inhibitor. It is also an object of the present invention to provide a method for improving the photostability of a preparation containing a mast cell degranulation inhibitor. The present invention provides an external preparation containing a mast cell degranulation inhibitor and a topical anesthetic. Further, the method for enhancing the photostability of a preparation containing a mast cell degranulation inhibitor according to the present invention includes adding a topical anesthetic thereto.
    Type: Application
    Filed: August 1, 2005
    Publication date: May 8, 2008
    Inventors: Mitsuru Endo, Keiko Yamasaki, Hidetoshi Hamamoto, Sueko Matsumura, Masaki Ishibashi
  • Patent number: 7347835
    Abstract: The present invention provides a production process for obtaining a pad base for endermism capable of administering a drug in the skin without vibration. One side end of a thin metal wire is immersed in a solution containing a synthetic resin raw material in a lengthwise direction, the synthetic resin raw material solution adheres to a periphery of the thin metal wire, the synthetic resin raw material solution is hardened and then the thin metal wire is pulled out. The resulting minute needle is a hollow tubular body and the outer wall thereof is thickened toward the bottom. The minute needle is installed upright on the skin side of a patch base, and a drug in the hollow portion of the minute needle is injected in the skin and can be provided for endermism.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: March 25, 2008
    Assignee: Medrx Co., Ltd.
    Inventors: Shinya Maenosono, Yasushi Suzuki, Hiroshi Akitomo, Hidetoshi Hamamoto, Masaki Ishibashi
  • Patent number: 7291337
    Abstract: The peptide in this invention is a peptide having affinity to gp120 represented by Formula (1): H-A1-A2-A3-A4-A5-R(SEQ ID No. 1) (in the formula, H means hydrogen, A1 is aspartic acid, lysine, valine, glutamic acid, glycine, asparagine, or tyrosine residue, A2 is valine, aspartic acid, tryptophan, lysine, phenylalanine, isoleucine, leucine, or tyrosine residue, A3 is lysine, valine, aspartic acid, arginine, alanine, or tryptophan residue, A4 is alanine, tryptophan, or glycine residue, A5 is glycine, alanine, valine, leucine, isoleucine, serine, threonine, methionine, asparagine, glutamine, histidine, lysine, arginine, phenylalanine, tryptophan, proline, or tyrosine residue, R is OH derived from carboxyl group or NH2 derived from acid amide group). The above peptide has an affinity to gp120 of the HIV envelope protein and is superior in stability.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: November 6, 2007
    Assignee: Aspion Co., Ltd.
    Inventors: Takeru Fujii, Hideakira Yokoyama, Hidetoshi Hamamoto
  • Patent number: 7235257
    Abstract: This invention relates to external drugs for dermal application which have a migraine-alleviating effect, in more detail ointments and patches comprising in mixing l-menthol and an essential oil into a base containing a hydrophilic high-molecular weight compound, a polyhydric alcohol and water.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: June 26, 2007
    Assignees: Rohto Pharmaceutical Co., Ltd., Teikoku Seiyaku Co., Ltd.
    Inventors: Hideakira Yokoyama, Hidetoshi Hamamoto
  • Publication number: 20070054952
    Abstract: An objective of the present invention is to provide an anti-inflammatory analgesic for external use comprising etodolac as NSAID. The anti-inflammatory analgesic for external use is excellent not only in skin permeability but also in penetratability and diffusivity into tissues present in portions deeper than the skin, can act directly on the muscles or joint tissues with inflammation or pain, and is a little irritant to the skin. The anti-inflammatory analgesic for external use of the present invention is characterized by comprising etodolac and a local anesthetic.
    Type: Application
    Filed: January 27, 2005
    Publication date: March 8, 2007
    Inventors: Hidetoshi Hamamoto, Masaki Ishibashi, Sueko Matsumura, Keiko Yamasaki
  • Publication number: 20070053939
    Abstract: The invention provides a biguanide drug-containing jelly preparation of which discomfort upon administration is decreased by the control of its harshness or bitterness. In addition, the preparation has stability and excellent ability for releasing a drug in the digestive tract. The biguanide drug-containing jelly preparation of the invention is characterized by comprising a biguanide drug, an inorganic acid, and a water-soluble polymer. The jelly preparation of the invention is excellent in both stability and ability for releasing a drug, which are usually incompatible characters, particularly by the action of the inorganic acid.
    Type: Application
    Filed: October 15, 2004
    Publication date: March 8, 2007
    Inventors: Hideakira Yokoyama, Akihiko Hirata, Hidetoshi Hamamoto, Masaki Ishibashi, Keiko Yamasaki, Takeru Fujii
  • Patent number: 7087238
    Abstract: A sheet-like pack effective for prevention and improvement of small wrinkles on skin, comprising a water soluble high molecular weight compound, water and ubiquinone 10 as an active ingredient, which are contained in a base.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: August 8, 2006
    Assignees: Teikoku Seiyaku Co., LTD, Beirsdorf Aktiengesellschaft
    Inventors: Hidetoshi Hamamoto, Yasuko Abe, Sven H. Gohla, Heiner Max, Thorsten Cassier
  • Publication number: 20060163215
    Abstract: According to a conventional MicroPatch method, a drug is administrated by stinging the skin with a solid-core needle, and broadening a gap between the needle and the skin by vibration with a vibrator. Consequently, the object of the present invention is to provide a pad base for endermism capable of administrating a drug in the skin without vibration, and to provide a production process capable of easily obtaining the pad base. One side end of the thin metal wire is immersed in a solution containing a synthetic resin raw material in a lengthwise direction, the synthetic resin raw material solution adheres to a periphery of the thin metal wire, the synthetic resin raw material solution is hardened and then the thin metal wire is pulled out. There is obtained the minute needle 1 which is installed upright on the skin side of a patch base 2, wherein the minute needle is a hollow tubular body and the outer wall thereof is thickened toward the bottom.
    Type: Application
    Filed: June 10, 2004
    Publication date: July 27, 2006
    Inventors: Shinya Maenosono, Yasushi Suzuki, Hiroshi Akitomo, Hidetoshi Hamamoto, Masaki Ishibashi
  • Publication number: 20060159632
    Abstract: Provided is a drug formulation for mouth or pharynx to be used for medical care or treatment for serious stomatitis caused by a side effect of an anti-tumor agent or the like, and for anesthesia in the pharynx, with remarkably suppressed discomfort due to bitter taste although it contains a local anesthetic as a main efficacious component. The drug formulation of the present invention comprises a local anesthetic as an efficacious component, and a weak acid, its pharmaceutically acceptable salt or a mixture thereof, wherein the mixing ratio of the weak acid to the local anesthetic is 1:1 or more by mole ratio.
    Type: Application
    Filed: January 13, 2006
    Publication date: July 20, 2006
    Applicant: MEDRX CO., LTD.
    Inventors: Masaki Ishibashi, Hidetoshi Hamamoto, Keiko Yamasaki
  • Publication number: 20060127465
    Abstract: The object of the present invention is to provide a pad base for endermism which hardly causes bad influence on organism even if a needle fractures in the skin and remains in the MicroPatch method. It is the pad base for endermism in which a minute needle 1 is installed upright on the skin side of a patch base 2 for skin. The minute needle 1 is formed from a biodegradable resin and is composed so as to be able to be injected an administering drug in a hollow center of an axle portion (a hollow portion 3). Even if the injection needle fractures and remains in the skin, the minute needle 1 is decomposed in vivo because it is made of a biodegradable resin; therefore, there is little bad influence is to organism.
    Type: Application
    Filed: June 10, 2004
    Publication date: June 15, 2006
    Inventors: Shinya Maenosono, Yasushi Suzuki, Hiroshi Akitomo, Hidetoshi Hamamoto, Masaki Ishibashi
  • Publication number: 20050118269
    Abstract: There is provided an external preparation for wounds which has novel usability in treating skin damages accompanied by a large amount of exudation such as bedsores, skin ulcers, and burns, and yet has such advantages as observed in conventional medicines having been employed in treating these wounds. The external preparation for wounds comprises a water-soluble polymer and a crosslinking agent, and has powdery/granular or ointment form. After absorbing an exudation, the preparation undergoes phase transition from a sol to a gel by the action of ingredient of the preparation, and thus exhibits actions of adsorbing and eliminating necrotic tissues, and protecting the wounded parts. Subsequently, it can continuously absorb the exudation. After being used, it can be easily separated substantially as a mass, thereby exhibiting high therapeutic effects and usability.
    Type: Application
    Filed: March 12, 2003
    Publication date: June 2, 2005
    Inventors: Hidetoshi Hamamoto, Keiko Yamasaki, Hideakira Yokoyama, Akihiro Hirata, Takeru Fujii
  • Publication number: 20050089577
    Abstract: It is intended to provide a liquid matrix for medicinal use in which medicine can be easily solubilized, dispersed or suspended and which can be easily swallowed because of being liquid, has favorable working properties in sterilization and so on and a high stability, also exhibits an effect of masking bitterness, and gels in vivo so as to control the release speed of the medicine, and liquid oral preparations using the same. Namely, a liquid matrix which is a liquid assistant for facilitating swallowing medicine characterized in comprising a water-soluble polymer gelling under acidic conditions, and the breaking stress of the gel is about 3.00×103 N/m2 or more. Liquid oral preparations have favorable slow release properties even though being a liquid.
    Type: Application
    Filed: March 3, 2003
    Publication date: April 28, 2005
    Inventors: Hideakira Yokoyama, Akihiko Hirata, Hidetoshi Hamamoto, Keiko Yamasaki, Takeru Fujii
  • Publication number: 20050004040
    Abstract: The peptide in this invention is a peptide having affinity to gp120 represented by Formula (1): H-A1-A2-A3-A4-A5-R (in the formula, H means hydrogen, A1 is aspartic acid, lysine, valine, glutamic acid, glycine, asparagine, or tyrosine residue, A2 is valine, aspartic acid, tryptophan, lysine, phenylalanine, isoleucine, leucine, or tyrosine residue, A3 is lysine, valine, aspartic acid, arginine, alanine, or tryptophan residue, A4 is alanine, tryptophan, or glycine residue, A5 is glycine, alanine, valine, leucine, isoleucine, serine, threonine, methionine, asparagine, glutamine, histidine, lysine, arginine, phenylalanine, tryptophan, proline, or tyrosine residue, R is OH derived from carboxyl group or NH2 derived from acid amide group). The above peptide has an affinity to gp120 of the HIV envelope protein and is superior in stability.
    Type: Application
    Filed: August 3, 2004
    Publication date: January 6, 2005
    Inventors: Takeru Fujii, Hideakira Yokoyama, Hidetoshi Hamamoto
  • Patent number: 6827939
    Abstract: The peptide in this invention is a peptide having affinity to gp120 represented by H-A1-A2-A3-A4-A5-R (SEQ ID No. 1)  Formula (1) (in the formula, H means hydrogen, A1 is aspartic acid, lysine, valine, glutamic acid, glycine, asparagine, or tyrosine residue, A2 is valine, aspartic acid, tryptophan, lysine, phenylalanine, isoleucine, leucine, or tyrosine residue, A3 is lysine, valine, aspartic acid, arginine, alanine, or tryptophan residue, A4 is alanine, tryptophan, or glycine residue, A5 is glycine, alanine, valine, leucine, isoleucine, serine, threonine, methionine, asparagine, glutamine, histidine, lysine, arginine, phenylalanine, tryptophan, proline, or tyrosine residue, R is OH derived from carboxyl group or NH2 derived from acid amide group).
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: December 7, 2004
    Assignee: MedRx Co., Ltd.
    Inventors: Takeru Fujii, Hideakira Yokoyama, Hidetoshi Hamamoto