Patents by Inventor Ikuzo Nishiguchi

Ikuzo Nishiguchi 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: 6025310
    Abstract: The invention provides novel organic compounds, and more particularly those having excellent lubricity, compatible with lubricating organic compounds having a benzene ring and a phosphazine ring and retaining stability free of hydrolysis for a prolonged period of time. The organic compounds are represented by the formula R.sub.1 --R.sub.0 --R.sub.1 or R.sub.0 --R.sub.1. R.sub.0 is a chain saturated organic group containing a chain of carbon atoms or a chain of carbon atom C and oxygen atom O, and filled with fluorine atoms F or trifluoromethyl groups CF.sub.3 except at one end or both ends of the chain. R.sub.1 is --CH.sub.2 --O--(CH.sub.2).sub.p --{CH(CH.sub.3)}.sub.k --{C(CH.sub.3).sub.2 }.sub.t --R.sub.2 wherein p, k and t are each an integer of 0 or not smaller than 1, and R.sub.2 is phenyl or a functional group corresponding to phenyl in which at least one of the hydrogen atoms is substituted with a compound of at least two elements selected from the group consisting of C, H, O and F or with F, Br or Cl.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: February 15, 2000
    Assignee: Kubota Corporation
    Inventors: Ikuzo Nishiguchi, Hiroki Hara, Sigeru Tsuboi, Seiki Sugi, Kazuhiro Higuchi
  • Patent number: 5763560
    Abstract: A method of producing styrene derivatives expressed the general formula (2) by reacting a benzaldehyde derivative expressed by the general formula (1) with dibromomethane under the existence of zinc metal as well as an active chloride for producing various types of oxystyrene which are polymerized monomers as a photoresist material used in a high density integrated circuit process from easily available materials which also can easily be handled: ##STR1## (wherein R indicates a an alkyl group, alkoxyalkyl group, an alkylcarbonyl group, an alkoxycarbonyl group, a 5 or 6-atom heterocylclic groups, or an alkylsilyl group); ##STR2## (wherein R indicates any of the same substituents as those described above.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: June 9, 1998
    Assignees: Honshu Chemical Industry Co., Ltd., Osaka Municipal Government
    Inventors: Kenzo Tsujimoto, Yoshiharu Ayabe, Fujihisa Matsunaga, Ikuzo Nishiguchi, Yoshio Ishino
  • Patent number: 4634768
    Abstract: This invention relates to derivatives of 3-methylflavone-8-carboxylic acid represented by the formula (1) ##STR1## wherein R represents a hydrogen atom, a lower alkyl group or a group ##STR2## (wherein R.sup.1 and R.sup.2 represent a lower alkyl group or R.sup.1 and R.sup.2, when taken together with the nitrogen atom to which they are attached, may form a heterocyclic ring with or without an intervening hetero atom, and n is an integer of 1 to 4), and X represents a halogen atom, which are useful as intermediates.This invention also relates to processes for preparing the same.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: January 6, 1987
    Assignees: Yamamoto Chemical Industrial Co., Ltd., Osaka Municipal Government
    Inventors: Hiroshige Inoue, Kenichi Fukushima, Ikuzo Nishiguchi
  • Patent number: 4533732
    Abstract: This invention relates to derivatives of 3-propionylsalicylic acid represented by the formula (1) ##STR1## wherein R represents a hydrogen atom, a lower alkyl group or a group ##STR2## (wherein R.sup.1 and R.sup.2 represent a lower alkyl group or R.sup.1 and R.sup.2, when taken together with the nitrogen atom to which they are attached, may form a heterocyclic ring with or without an intervening hetero atom, and n is an integer of 1 to 4), and X represents a hydrogen atom or a halogen atom, R being the group ##STR3## when X is a hydrogen atom. This invention also relates to processes for preparing the same.
    Type: Grant
    Filed: September 30, 1983
    Date of Patent: August 6, 1985
    Assignees: Yamamoto Chemical Industrial Company, Limited, Osaka Municipal Government
    Inventors: Hiroshige Inoue, Kenichi Fukushima, Ikuzo Nishiguchi
  • Patent number: 4510025
    Abstract: There is provided a novel method for producing 2,2-dimethyl-3-methylenebicyclo[2.2.1]heptan-5-ol and 2,2,3-trimethylbicyclo[2.2.1]heptan-3,5-diol and their lower fatty acid esters. Also provided are perfume, fragrance compositions containing 2,2-dimethyl-3-methylenebicyclo[2.2.1]heptan-5-ol or a lower fatty acid ester thereof, which has a fragrance characteristic of floral scent.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: April 9, 1985
    Assignee: Kuraray Company, Ltd.
    Inventors: Yoshiharu Matsubara, Tsuneaki Hirashima, Ikuzo Nishiguchi