Patents by Inventor Takakazu Morita
Takakazu Morita 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: 5292926Abstract: This invention relates to cysteine derivatives of the formula[I] and salts thereof. ##STR1## The compounds of this invention are useful for immunomodulator and treatment of liver disorder.Type: GrantFiled: April 8, 1993Date of Patent: March 8, 1994Assignee: Santen Pharmaceutical Co., Ltd.Inventors: Takakazu Morita, Tadashi Iso, Shiro Mita, Yoichi Kawashima
-
Patent number: 5290774Abstract: This invention relates to a photostabilizing method for ophthalmic solutions and the resulting ophthalmic solutions therefrom. The stabilization is attained by adding polyhydric alcohol and boric acid, and/or sodium borate to ophthalmic solutions which contain a drug substance unstable against light.Type: GrantFiled: July 31, 1992Date of Patent: March 1, 1994Assignees: Eisai Co., Ltd., Santen Pharmaceutical Co., Ltd.Inventors: Takakazu Morita, Shiro Mita, Yoichi Kawashima
-
Patent number: 5265869Abstract: A paper conveying apparatus having follower rollers arranged in opposition to and in contact with the rotationally driven conveying rollers and a second guide plate arranged to form a predetermined space between the second guide plate and a stationary first guide plate. The follower rollers and the second guide plate are supported on an openable/closable support plate independently of each other. The guide rollers are urged toward the conveying rollers and the second guide plate is urged toward the first guide plate independently of each other. In the above arrangement, the openable/closable support plate can be locked and unlocked easily to facilitate closing and opening.Type: GrantFiled: November 30, 1992Date of Patent: November 30, 1993Assignee: Mita Industrial Co., Ltd.Inventor: Takakazu Morita
-
Patent number: 5256655Abstract: Compounds of the formula [I] and salts thereof, which are useful for treatment of liver disorders, ##STR1## wherein X is oxygen or sulfur; andA is straight C.sub.3 -C.sub.4 alkylene which can be substituted by one or more lower alkyl groups.Type: GrantFiled: October 30, 1992Date of Patent: October 26, 1993Assignee: Santen Pharmaceutical Co., Ltd.Inventors: Takakazu Morita, Shiro Mita, Yoichi Kawashima
-
Patent number: 5214181Abstract: This invention relates to novel compounds of the formula [I], which are useful for treatment of various diseases such as immunodeficiency and autoimmune diseases caused by immune disorders, processes for preparing the compounds and compositions containing the compounds as active ingredients.Type: GrantFiled: July 12, 1991Date of Patent: May 25, 1993Assignee: Santen Pharmaceutical Co., Ltd.Inventors: Takakazu Morita, Shiro Mita, Yoichi Kawashima
-
Patent number: 5202342Abstract: This invention relates to the compounds of the formula [I] and salts thereof, which are useful for treatment of liver disorders, ##STR1## wherein X is oxygen or sulfur;R.sup.1 is lower alkyl which can be substituted by hydroxy, carboxy or lower alkoxycarbonyl;R.sup.2 is hydrogen, lower alkanoyl, phenyl lower alkanoyl or phenyl lower alkyl, and said phenyl ring of phenyl lower alkanoyl or phenyl lower alkyl can be substituted by lower alkyl or lower alkoxy; andA is straight or branched C.sub.1 -C.sub.6 alkylene.Type: GrantFiled: July 3, 1991Date of Patent: April 13, 1993Assignee: Santen Pharmaceutical Co., Ltd.Inventors: Takakazu Morita, Shiro Mita, Yoichi Kawashima
-
Patent number: 5183816Abstract: This invention relates to the compounds of the formula [I] and salts thereof, which are useful for treatment of liver disorders, ##STR1## wherein X is oxygen or sulfur; andA is straight C.sub.2 alkylene which can be substituted by one or more lower alkyl.Type: GrantFiled: June 20, 1991Date of Patent: February 2, 1993Assignee: Santen Pharmaceutical Co., Ltd.Inventors: Takakazu Morita, Shiro Mita, Yoichi Kawashima
-
Patent number: 5156388Abstract: In a paper supplying device in an image forming apparatus, a circular groove is formed at one position of a roller shaft of a paper supplying roller. An engaging-connecting portion is releasably engaged in such circular groove and is formed in a member to be pressed by a paper supplying cassette. The member thus is connected to the paper supplying roller but is rotatable relative thereto.Type: GrantFiled: September 30, 1991Date of Patent: October 20, 1992Assignee: Mita Industrial Co., Ltd.Inventor: Takakazu Morita
-
Patent number: 5153198Abstract: A compound of the formula [II] or pharmaceutically acceptable salt thereof, ##STR1## wherein R.sup.1 is hydrogen or fluorine;R.sup.2 is hydrogen or fluorine;R.sup.3 is hydrogen, lower alkyl, lower alkoxy, halogen or lower alkylenedioxy;A is straight or branched lower alkylene having 1 to 6 carbon atoms; and n is 0 or 1,provided that at least one of R.sup.1 or R.sup.2 is fluorine. Such compound is useful for treatment of disorders of the cerebro-neural transmission system.Type: GrantFiled: October 23, 1991Date of Patent: October 6, 1992Assignee: Santen Pharmaceutical Co., Ltd.Inventors: Takakazu Morita, Tadashi Iso, Hideyasu Yamauchi
-
Patent number: 5139252Abstract: A paper-supplying device in an image-forming apparatus includes a paper-supplying portion to be charged with a paper-housing vessel by moving the latter in a direction of a rotary axis of a shaft of a paper-supplying roller. The vessel is provided with paper-separating clicks for pressing paper at opposite corners thereof on a downstream side thereof in a paper-supplying direction of the paper and an energizing structure for lifting a carrier plate supporting the paper thereon upwardly toward the paper-separating clicks. The roller is movable in the direction of the rotary axis of the shaft thereof. Transfer structure lifts the vessel in an upwardly inclined direction to press the paper against the roller when the paper-supplying portion is charged with the vessel. A member, brought into contact with the vessel before a surface of the paper is brought into contact with the roller and moved in the direction of charging the vessel, is connected with the roller in a relatively rotatable manner.Type: GrantFiled: July 12, 1990Date of Patent: August 18, 1992Assignee: Mita Industrial Co., Ltd.Inventors: Takakazu Morita, Satoshi Yano
-
Patent number: 5128467Abstract: This invention relates to cyclic sulfur-containing compounds of the formula [I] and salts thereof which are useful for immunomodulator and treatment of liver diseases.Type: GrantFiled: June 25, 1991Date of Patent: July 7, 1992Assignee: Santen Pharmaceutical Co., Ltd.Inventors: Takakazu Morita, Tadashi Iso, Shiro Mita, Youichi Kawashima
-
Patent number: 5087627Abstract: A method for treatment of disorders of the cerebro-neural transmission system which comprises administering a compound of the formula (I) or a pharmaceutically acceptable salt thereof in a therapeutically effective amount, either alone or in admixture with one or more pharmaceutically acceptable excipients, ##STR1## wherein Ar or Ar' is unsubstituted or substituted phenyl or pyridyl; R is hydrogen, lower alkyl, lower alkoxy, halogen or lower alkylenedioxy; A is C.sub.1 -C.sub.6 alkylene; and n is 0 or 1. A compound of the formula (II) or a pharmaceutically acceptable salt thereof, ##STR2## wherein R.sup.1 is hydrogen or fluorine; R.sup.2 is hydrogen or fluorine; R.sup.3 is hydrogen, lower alkyl, lower alkoxy, halogen or lower alkylenedioxy; A is lower C.sub.1 -C.sub.6 alkylene, and n is 0 or 1, provided that at least one of R.sup.1 or R.sup.2 is fluorine.Type: GrantFiled: February 28, 1990Date of Patent: February 11, 1992Assignee: Santen Pharmaceutical Co., Ltd.Inventors: Takakazu Morita, Tadashi Iso, Hideyasu Yamauchi
-
Patent number: 5082836Abstract: A pharmaceutical composition for treatment of an autoimmune disease, which comprises (i) a pharmaceutical carrier and (ii) a compound of the formula (I) or pharmaceutically acceptable salts thereof in an amount effective for treatment of an autoimmune disease, ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each is lower alkyl; and R.sup.3 is hydrogen or lower alkyl.Type: GrantFiled: June 25, 1991Date of Patent: January 21, 1992Assignee: Santen Pharmaceutical Co., Ltd.Inventors: Takakazu Morita, Tadashi Iso, Shiro Mita, Youichi Kawashima
-
Patent number: 5041435Abstract: Cyclic sulfur-containing compounds of the formula ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each is hydrogen or lower alkyl,R.sup.3 is hydrogen or lower alkyl,X is S--S,m is 0 or 1 andn is 1 or 2, with the proviso that when m is 0,n is 2, and pharmaceutically acceptable salts thereof.Such compounds are useful for treating liver disorders and autoimmune diseases.Type: GrantFiled: July 17, 1989Date of Patent: August 20, 1991Assignee: Santen Pharmaceutical Co., Ltd.Inventors: Takakazu Morita, Tadashi Iso, Shiro Mita, Youichi Kawashima
-
Patent number: 5034230Abstract: This invention relates to low irritative ophthalmics containing the compound of the formula or salts thereof which are useful for treatment of anti-allergic eye diseases such as allergic conjunctivitis ##STR1##Type: GrantFiled: July 28, 1989Date of Patent: July 23, 1991Assignee: Santen Pharmaceutical Co., Ltd.Inventors: Takakazu Morita, Tadashi Iso, Youichi Kawashima, Mitsushi Hikida